Lecture 2: Airplane Aerodynamics

[@jetnihal]

I'm a retired Major US Airline Captain with over 31,700 flight hours Worldwide. My daughter wants to be an airline pilot, therefore, I discovered these video's on my feed. I was spell bound and was amazed at Dr. Tina Srivastava's simple but realistic approach to teaching. I have learnt a few things in this aerodynamics lecture for private pilot's that no one had ever explained in such thought provoking manner! Please keep up the excellent work Dr. Tina Srivastava, thanks for enlightening me to aspects of Aerodynamics which I was unaware of. I also want to thank MIT, the Massachusetts Institute of Technology in Boston for airing on KZbin over 25 video's reference private pilot flying totally free of charge to the World!

[@Shefa-lt6lf]

I always dreamed to be a pilot ...I love sky❤..but I am poor to fulfill my dream....

[@Bollibompa]

Yeah, I second this for sure!

[@PabloGonzalez-ub6lu]

I don't know why KZbin recommended this to me, but I stayed for the whole lecture.

[@Gustavo_0107]

Same

[@truthwillsetyoufree529]

KZbin thought that you are smart ,wrong algorithms

[@chengmine]

never thought i've qualified for the MIT

[@bhaskarsingha2387]

Same

[@moukafaslouka4796]

This is how I made sense of airplanes since I was a little kid with no formal physics knowledge.

[@faganfit572]

15 years as an airline pilot and I am captivated as if this were my first day in ground school.

[@ILSRWY4]

you better read Aerodynamics for Naval Aviators and you will not only be humbled very quickly but you will also realize this MIT course is actually scary...

[@BIBLIAesLAVERDAD]

John 14:6 Jesus said unto him, “I am the Way, the Truth, and the Life; no man cometh unto the Father, but by Me. John 3:18 “He that believeth in Him is not condemned; but He that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. Revelation 21:8 But the fearful, and unbelieving, and the abominable, and murderers,and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone, which is the second death.” 1 Corinthians 6:18 Flee fornication. Every other sin which a man doeth is outside the body, but he that committeth fornication sinneth against his own body. Matthew 12:45 Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there; and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation.” Romans 8:6 6 For to be carnally minded is death, but to be spiritually minded is life and peace, Luke 12:20 20 But God said unto him, ‘Thou fool, this night thy soul shall be required of thee. Then whose shall those things be, which thou hast provided?’ 1 Timothy 5:6 6 But she that liveth in pleasure is dead while she liveth. 1 Corinthians 6:9 Know ye not that the unrighteous shall not inherit the Kingdom of God? Be not deceived: Neither fornicators, nor idolaters, nor adulterers, nor the effeminate, nor abusers of themselves with mankind, 10 nor thieves, nor the covetous, nor drunkards, nor revilers, nor extortioners shall inherit the Kingdom of God. 1 John 2:17 21st Century King James Version 17 And the world passeth away and the lust thereof, but he that doeth the will of God abideth for ever. Matthew 22:29 29 Jesus answered and said unto them, “Ye do err, not knowing the Scriptures, nor the power of God. John 8:51 21st Century King James Version 51 Verily, verily I say unto you, if a man keep My saying, he shall never see death.” 2 John 9 21st Century King James Version 9 Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ hath both the Father and the Son. Titus 1:14 21st Century King James Version 14 not giving heed to Jewish fables and commandments of men who turn from the truth. 2 Peter 3:18 18 But grow in grace and in the knowledge of our Lord and Savior Jesus Christ. To Him be glory both now and for ever. Amen. Romans 12:2 2 And be not conformed to this world, but be ye transformed by the renewing of your mind, that ye may prove what is that good and acceptable and perfect will of God. Hebrews 9:24 21st Century King James Version 24 For Christ has not entered into the holy places made with hands, which are copies of the true, but into Heaven itself, now to appear in the presence of God for us. Colossians 2:10 10 And ye are complete in Him, who is the head of all principality and power, Deuteronomy 6:14 Ye shall not go after other gods, of the gods of the people who are round about you 2 Corinthians 11:14 14 And no marvel, for Satan himself is transformed into an angel of light. Jeremiah 7:18 The children gather wood, and the fathers kindle the fire, and the women knead their dough to make cakes to the queen of heaven, and to pour out drink offerings unto other gods, that they may provoke Me to anger. 1 Corinthians 10:20 But I say that the things which the Gentiles sacrifice, they sacrifice to devils and not to God; and I would not that ye should have fellowship with devils. 1 Timothy 2 5 For there is one God and one mediator between God and men, the man Christ Jesus, Deuteronomy 8:19 And it shall be, if thou at all forget the Lord thy God and walk after other gods, and serve them and worship them, I testify against you this day that ye shall surely perish. Deuteronomy 18:10 There shall not be found among you any one who maketh his son or his daughter to pass through the fire, or who useth divination, or an observer of times, or an enchanter, or a witch, 11 or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer. Proverbs 7:27 27 Her house is the way to hell, leading down to the chambers of death. 1 John 5:20 And we know that the Son of God is come and hath given us an understanding, that we may know Him that is true; and we are in Him that is true, even in His Son Jesus Christ. This is the true God and Eternal Life. Acts 17 29 “For inasmuch, then, as we are the offspring of God, we ought not to think that the Godhead is like unto gold or silver or stone, graven by art and of man’s devising. Proverbs 14:12 There is a way which seemeth right unto a man, but the end thereof are the ways of death. 1 John 4 3 And every spirit that confesseth not that Jesus Christ is come in the flesh, is not of God; and such is the spirit of Antichrist, whereof ye have heard that it should come, and even now already it is in the world. 2 John 1:9 Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ hath both the Father and the Son. John 8 12 Then spoke Jesus again unto them, saying, “I am the Light of the world. He that followeth Me shall not walk in darkness, but shall have the light of life.” Mark 8:35 For whosoever will save his life shall lose it; but whosoever shall lose his life for My sake and the Gospel’s, the same shall save it. John 8:51 Verily, verily I say unto you, if a man keep My saying, he shall never see death.” John 17:3 And this is life eternal: that they might know Thee, the only true God, and Jesus Christ whom Thou hast sent. 1 Timothy 2:5 For there is one God and one mediator between God and men, the man Christ Jesus, Acts 4 12 Neither is there salvation in any other, for there is no other name under heaven given among men whereby we must be saved.” James 1 21 Therefore lay apart all filthiness and the superfluity of wickedness, and receive with meekness the engrafted Word, which is able to save your souls. John 11 25 Jesus said unto her, “I am the resurrection and the Life. He that believeth in Me, though he were dead, yet shall he live; 26 and whosoever liveth and believeth in Me shall never die. Believest thou this?” John 6 68 Then Simon Peter answered Him, “Lord, to whom shall we go? Thou hast the words of eternal life, Psalm 119 30 I have chosen the way of truth; Thy judgments have I laid before me. Psalm 119 11 Thy word have I hid in mine heart, that I might not sin against Thee. Romans 12:2 And be not conformed to this world, but be ye transformed by the renewing of your mind, that ye may prove what is that good and acceptable and perfect will of God. 1 Corinthians 2:5 that your faith should not stand on the wisdom of man, but on the power of God. 1 Peter 5:8 Be sober, be vigilant, because your adversary the devil walketh about as a roaring lion, seeking whom he may devour. 1 John 2 16 For all that is in the world - the lust of the flesh, and the lust of the eyes, and the pride of life - is not of the Father, but is of the world. 17 And the world passeth away and the lust thereof, but he that doeth the will of God abideth for ever. James 1 21 Therefore lay apart all filthiness and the superfluity of wickedness, and receive with meekness the engrafted Word, which is able to save your souls. 1 Corinthians 15 44 It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body. 1 Thessalonians 5 9 For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ John 3 18 “He that believeth in Him is not condemned; but He that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. John 3 36 He that believeth in the Son hath everlasting life; and he that believeth not the Son shall not see life, but the wrath of God abideth on him.” Luke 6:5 21st Century King James Version 5 And He said unto them, “The Son of Man is Lord also of the Sabbath.” Matthew 22 29 Jesus answered and said unto them, “Ye do err, not knowing the Scriptures, nor the power of God. John 5:29 29 and shall come forth - they that have done good, unto the resurrection of life, and they that have done evil, unto the resurrection of damnation. John 8:12 Then spoke Jesus again unto them, saying, “I am the Light of the world. He that followeth Me shall not walk in darkness, but shall have the light of life.” John 8:32 21st Century King James Version 32 And ye shall know the truth, and the truth shall make you free.” John 6:40 And this is the will of Him that sent Me: that every one who seeth the Son and believeth in Him may have everlasting life, and I will raise him up at the Last Day.” Mark 13:13 21st Century King James Version 13 And ye shall be hated by all men for My name’s sake; but he that shall endure unto the end, the same shall be saved. Revelation 14:12 12 Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus. John 8:36 If the Son therefore shall make you free, ye shall be free indeed. Mark 13:31 Heaven and earth shall pass away, but My words shall not pass away.

[@goodboyringo9716]

Thanks for telling me that , remind me not to fly with you .

[@sandeepssidhu4223]

This is the magic of aviation. I had to drop off but planning to rejoin my aviation passion:)

[@The-i4r]

@@ILSRWY4i read it, then crashed my Cessna and burned. Clearly, I did not understand the part on “stalls”.

[@nihonsuki]

I got my Ph.D. in fluid mechanics and am happy to see someone finally correctly explain how airplanes fly. As she explained, the correct reason is not complicated at all, as anyone who has ever held their arm and hand out of a car window knows.

[@purplespacesnail6836]

bernoulli is a cool idea, but has lots of flaws

[@leif1075]

Thanks for sharing. May I ask why you decided to specialize and get a PhD in that field? Abd how donyou deal with all the math and not get bored with it?

[@davideaccorsi5637]

You have a PhD in the subject I loved the most at uni. My deepest respect.

[@Erilfin]

I did this as I drove listening to this lecture. Before I read this 😂

[@ILSRWY4]

well well well mr. dr. you better read Aerodynamics for Naval Aviators and you will not only be humbled very quickly but you will also realize this MIT course is actually scary...

[@azharsalim2028]

I hv been in the aviation (engineering) trade for 37 years... 13 years as an engineer, and 24 years as an Instructor. This is a very good lecture.

[@toLothair2]

I do love the fact that people have this resource for gaining knowledge on almost any subject that interests you. This is the new revolution in learning that will eventually lead to certification tests to get credit for off campus learning for all.

[@ramachandra1203]

೧

[@kestasjk]

Unfortunately you do a lot of the hard yards in workshops / doing problems / reading textbooks / etc, MIT education by youtube video would be cool, and don't get me wrong I'm all for this content, but there's a difference between a getting a degree and watching a set of lectures

[@joe2648]

or maybe we r just addicted to consumption and this is what satisfies us. who knows

[@foodfootfool]

The lecturer is expressive, articulate, and clean when lecturing. No unnecessary words. Love it!

[@knockitofff]

and looks like it's her first day on the job LOL

[@VinayKumarT1302]

@@knockitofff 😆

[@mahinakondo8340]

..

[@jackthelad9933]

Apart from the million "so"s you mean?

[@VelhaGuardaTricolor]

16:20 Show them a picture of a racing car and asks them "what is this a picture of?" Really? Is this part of a test or something? Just explain what needs to be explained, don't try to interact in a patronizing fashion just because you like to talk to people that way and MIT doesn't seem to check on those types of behavior. Just teach what you have to teach. That is your job! Not asking silly stupid obvious questions! And criticize students for not playing the kindergarten's game.

[@rb3407]

I'm so jealous to not have ever had the possibility to have a teacher like her ! I was rising my hand to answer because I was too deep into the understanding that I forgot I am the other side of the desktop, you caught my focus for the whole hour. Anyway YOU ROCK GIRL !!!!! Thank god KZbin exists and thank you to share easy understandable lessons for everyone!

[@NwaHp3]

I dont fly aircraft or plan to fly aircraft and have no intention of ever being an Aerodynamicist, but I just sat glued to this for the full video! That woman is extremely good at getting the information across!

[@Platypus_Warrior]

She's awesome ! She cares so much about being understood using the simplest vocabulary and being that chill while remaining exact. Great pedagogy

[@mu99ins]

Yeah, but, this isn't the 5th grade. These are adults of drinking age. Something is wrong here. Does she think she's talking to the learning impaired? Perhaps so. There have been complaints about the readiness of college entrance students. Standards have been eased. This is not exactly advance education. These are our future engineers? No wonder corporations want foreigners to fill their jobs openings. "Who has build a paper airplane before? Raise your hand."

[@Platypus_Warrior]

@@mu99ins Well the lady giving the lecture IS a foreigner (Dr. Tina Srivastava) and looking at her profile she seem more than qualified to explain the subject. Richard Feynman also used very simple words to explain things. This is about picturing the reality of things before diving into the theory. "Lecture N°2" A mistake that many do is to use all their vocab where it's not necessary. She putting everyone on the same page before going further. I understand physics from my own observations, then I relate the formulas to it. Playing with paper planes is part of my understanding of aerodynamics in it's very core. So I disagree with you respectfully.

[@mu99ins]

@@Platypus_Warrior - You misunderstand my comment. I am not questioning the professor's qualifications. I am not saying the words are simple. The approach is tenative, as if the students were fragile as grade schoolers. The information flow is slow. If this was a class for English students, I would allow for the slow flow of information, but not for engineers. The students won't be just competing against other American graduates. American corporations prefer foreign graduates.

[@Platypus_Warrior]

@@mu99ins I get it now. I went to a french engineering school and indeed it's a more sustained rhythm. Thanks for your answer and have a nice one. 👋

[@robertmuller1523]

@@mu99ins This is definitely not a lecture for egineers. This lecture was part of a workshop for students from all faculties who want to prepare for the private pilot FAA test.

[@tsaichiahungnccu]

One of my experience at the MIT class is there is always someone answering instructor's question no matter how difficult it is. It is how it goes at MIT.

[@brianclintone308]

Looks like you need to take an English class at MIT.

[@skyward7903]

@@brianclintone308 not another grammar nazi lol

[@Observ45er]

@, Chiahung Tsai That is perfectly understandable...

[@lameiraangelo]

@@skyward7903 Funny

[@qwerty9398]

@@brianclintone308 GRAMMAR NAZI.

[@avikjis27]

After 30 min uninterrupted watching I realize I am an IT professional and these are no way helping me to pass cloud certifaction scheduled this years ....kudos to the instructor for holding me back for so long. love it. ☺️☺️☺️☺️☺️

[@mytech6779]

I have similar issues.

[@ST-Dev5]

Lmaooo… I’m in the exact situation.

[@cmntkxp]

Same here .

[@avinashshetty5963]

haha same here

[@habor82]

yeah shess' sweet and also captures me in to next level of education. 3:33 🥰she rocks ❤

[@PradeepAnbumani]

If I had a professor like her, I would have gotten a better understanding of the world. Kudos to the level of clarity with which you have delivered this lecture.

[@10Musili]

It feels criminal watching and learning from these videos without paying for it. Absolutely 10-star quality content.

[@mangos2888]

I just remember the size of their endowments and how underpaid an associate professor is and it removes the criminality feeling completely 😂

[@srikrishnarr6553]

why your stomach burns when a poor learns is my humble question ...by the way i do not want an answer from you

[@saskiavanhoutert6081]

The Internet is a platform as a source forward you can learn from or have information from. As an information/communication platform, as a source you can use for that purpose, nothing else. Kind regards.

[@pigeonlove]

Then make a donation instead of gassing

[@Rudra71124]

Hey, that one lecture has turned me into an aspiring pilot . Really the students are really very lucky to have such great teacher

[@energywiz]

Or a an aerospace engineer maybe?

[@missionexpired3618]

say no to BONHA

[@sailiingle5318]

Hello Teena, I am 50 years old housewife and since childhood I just keen how to fly plane😂. Suddenly today i watched your lecture on. I m very happy. You teach so simpl easily.... I m enjoying ... To know the science of how to fly the plane.... Thank you for making the video... And even learning english the way you pronounced....🙏🙏🌹🌹

[@advancedenglishindia]

excellent classes,,, rk

[@hasanmahmudsajib1007]

Just loved watching the lecture. I have a statistics exam some days later and was searching for a relevant video. See, where I clung to! I ended up at 72 minutes. My love for flying bodies brought me up here and finally, the love for the method of her teaching held me till the end.

[@Robertsmith001]

Why are you watching her? She is not your wife and is not wearing hijab so it’s haram

[@drsinghtastic]

This was a Rolex of all lectures! Brilliant stuff! Dr Srivastava has my respect!

[@Defender_928]

So My question is that why not parachutes are fitted in air planes so in accidents type of scenario parachutes deploy to save lifes any aeronautical expert plz answer that...thx

[@اشرفالحيدري-ه9ج]

Do you have group for chart

[@Jotinha6131]

I am not an expert, but I know this is already in use for some small, low speed planes. In a big passenger jet the speed is too high, so the parachute could not be deployed properly

[@اشرفالحيدري-ه9ج]

@@Jotinha6131 what

[@doctorpanigrahi9975]

​@@Jotinha6131Neega you jump, then after reaching the proper altitude, you deploy.

[@pitts99aa]

As a DPE who gives CFI checkrides and find appilcants have a difficult time explaining these principles. I will pass your lecture along to Flight Instructors preparing their students for CFI practical.

[@healthylivingtrends6839]

I am a Biotechnologist, and have no technical understanding of the aerodynamics and design aspects, but I stayed on till end of the lecture. All the credit goes to Tina srivastava for her good teaching skills.

[@AlfaTube1231]

Literally went from “what’s a fuselage?” to “characterise the viscosity of the lift with turbulence of the propeller in the photosynthesis of the leaf” in the space of 1 hour

[@Not_YourAv3rageJO]

Underated comment. 😆 🤣

[@rohitacharya9143]

😂😂😎😎

[@Tranefine]

I recommend you sign up for a BSc in engineering! ;D

[@wolfsebastiensolon6178]

@@mmm-mmm yeaaah same, I noticed this too!, Im 15 and understand and most of this! 🤩

[@Tranefine]

@@gauravverma8820 BSc = Bachelor of Science… basically, it means going to university, in this case, for an engineering course

[@arnablahiri7023]

I have done a lots of maths in this subject but perhaps, what makes this lecture exceptional is the the 'physical feel' what the instructer gives.. Everyone must see it...

[@BIBLIAesLAVERDAD]

John 14:6 Jesus said unto him, “I am the Way, the Truth, and the Life; no man cometh unto the Father, but by Me. John 3:18 “He that believeth in Him is not condemned; but He that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. Revelation 21:8 But the fearful, and unbelieving, and the abominable, and murderers,and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone, which is the second death.” 1 Corinthians 6:18 Flee fornication. Every other sin which a man doeth is outside the body, but he that committeth fornication sinneth against his own body. Matthew 12:45 Then goeth he, and taketh with himself seven other spirits more wicked than himself, and they enter in and dwell there; and the last state of that man is worse than the first. Even so shall it be also unto this wicked generation.” Romans 8:6 6 For to be carnally minded is death, but to be spiritually minded is life and peace, Luke 12:20 20 But God said unto him, ‘Thou fool, this night thy soul shall be required of thee. Then whose shall those things be, which thou hast provided?’ 1 Timothy 5:6 6 But she that liveth in pleasure is dead while she liveth. 1 Corinthians 6:9 Know ye not that the unrighteous shall not inherit the Kingdom of God? Be not deceived: Neither fornicators, nor idolaters, nor adulterers, nor the effeminate, nor abusers of themselves with mankind, 10 nor thieves, nor the covetous, nor drunkards, nor revilers, nor extortioners shall inherit the Kingdom of God. 1 John 2:17 21st Century King James Version 17 And the world passeth away and the lust thereof, but he that doeth the will of God abideth for ever. Matthew 22:29 29 Jesus answered and said unto them, “Ye do err, not knowing the Scriptures, nor the power of God. John 8:51 21st Century King James Version 51 Verily, verily I say unto you, if a man keep My saying, he shall never see death.” 2 John 9 21st Century King James Version 9 Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ hath both the Father and the Son. Titus 1:14 21st Century King James Version 14 not giving heed to Jewish fables and commandments of men who turn from the truth. 2 Peter 3:18 18 But grow in grace and in the knowledge of our Lord and Savior Jesus Christ. To Him be glory both now and for ever. Amen. Romans 12:2 2 And be not conformed to this world, but be ye transformed by the renewing of your mind, that ye may prove what is that good and acceptable and perfect will of God. Hebrews 9:24 21st Century King James Version 24 For Christ has not entered into the holy places made with hands, which are copies of the true, but into Heaven itself, now to appear in the presence of God for us. Colossians 2:10 10 And ye are complete in Him, who is the head of all principality and power, Deuteronomy 6:14 Ye shall not go after other gods, of the gods of the people who are round about you 2 Corinthians 11:14 14 And no marvel, for Satan himself is transformed into an angel of light. Jeremiah 7:18 The children gather wood, and the fathers kindle the fire, and the women knead their dough to make cakes to the queen of heaven, and to pour out drink offerings unto other gods, that they may provoke Me to anger. 1 Corinthians 10:20 But I say that the things which the Gentiles sacrifice, they sacrifice to devils and not to God; and I would not that ye should have fellowship with devils. 1 Timothy 2 5 For there is one God and one mediator between God and men, the man Christ Jesus, Deuteronomy 8:19 And it shall be, if thou at all forget the Lord thy God and walk after other gods, and serve them and worship them, I testify against you this day that ye shall surely perish. Deuteronomy 18:10 There shall not be found among you any one who maketh his son or his daughter to pass through the fire, or who useth divination, or an observer of times, or an enchanter, or a witch, 11 or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer. Proverbs 7:27 27 Her house is the way to hell, leading down to the chambers of death. 1 John 5:20 And we know that the Son of God is come and hath given us an understanding, that we may know Him that is true; and we are in Him that is true, even in His Son Jesus Christ. This is the true God and Eternal Life. Acts 17 29 “For inasmuch, then, as we are the offspring of God, we ought not to think that the Godhead is like unto gold or silver or stone, graven by art and of man’s devising. Proverbs 14:12 There is a way which seemeth right unto a man, but the end thereof are the ways of death. 1 John 4 3 And every spirit that confesseth not that Jesus Christ is come in the flesh, is not of God; and such is the spirit of Antichrist, whereof ye have heard that it should come, and even now already it is in the world. 2 John 1:9 Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ hath both the Father and the Son. John 8 12 Then spoke Jesus again unto them, saying, “I am the Light of the world. He that followeth Me shall not walk in darkness, but shall have the light of life.” Mark 8:35 For whosoever will save his life shall lose it; but whosoever shall lose his life for My sake and the Gospel’s, the same shall save it. John 8:51 Verily, verily I say unto you, if a man keep My saying, he shall never see death.” John 17:3 And this is life eternal: that they might know Thee, the only true God, and Jesus Christ whom Thou hast sent. 1 Timothy 2:5 For there is one God and one mediator between God and men, the man Christ Jesus, Acts 4 12 Neither is there salvation in any other, for there is no other name under heaven given among men whereby we must be saved.” James 1 21 Therefore lay apart all filthiness and the superfluity of wickedness, and receive with meekness the engrafted Word, which is able to save your souls. John 11 25 Jesus said unto her, “I am the resurrection and the Life. He that believeth in Me, though he were dead, yet shall he live; 26 and whosoever liveth and believeth in Me shall never die. Believest thou this?” John 6 68 Then Simon Peter answered Him, “Lord, to whom shall we go? Thou hast the words of eternal life, Psalm 119 30 I have chosen the way of truth; Thy judgments have I laid before me. Psalm 119 11 Thy word have I hid in mine heart, that I might not sin against Thee. Romans 12:2 And be not conformed to this world, but be ye transformed by the renewing of your mind, that ye may prove what is that good and acceptable and perfect will of God. 1 Corinthians 2:5 that your faith should not stand on the wisdom of man, but on the power of God. 1 Peter 5:8 Be sober, be vigilant, because your adversary the devil walketh about as a roaring lion, seeking whom he may devour. 1 John 2 16 For all that is in the world - the lust of the flesh, and the lust of the eyes, and the pride of life - is not of the Father, but is of the world. 17 And the world passeth away and the lust thereof, but he that doeth the will of God abideth for ever. James 1 21 Therefore lay apart all filthiness and the superfluity of wickedness, and receive with meekness the engrafted Word, which is able to save your souls. 1 Corinthians 15 44 It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body. 1 Thessalonians 5 9 For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ John 3 18 “He that believeth in Him is not condemned; but He that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. John 3 36 He that believeth in the Son hath everlasting life; and he that believeth not the Son shall not see life, but the wrath of God abideth on him.” Luke 6:5 21st Century King James Version 5 And He said unto them, “The Son of Man is Lord also of the Sabbath.” Matthew 22 29 Jesus answered and said unto them, “Ye do err, not knowing the Scriptures, nor the power of God. John 5:29 29 and shall come forth - they that have done good, unto the resurrection of life, and they that have done evil, unto the resurrection of damnation. John 8:12 Then spoke Jesus again unto them, saying, “I am the Light of the world. He that followeth Me shall not walk in darkness, but shall have the light of life.” John 8:32 21st Century King James Version 32 And ye shall know the truth, and the truth shall make you free.” John 6:40 And this is the will of Him that sent Me: that every one who seeth the Son and believeth in Him may have everlasting life, and I will raise him up at the Last Day.” Mark 13:13 21st Century King James Version 13 And ye shall be hated by all men for My name’s sake; but he that shall endure unto the end, the same shall be saved. Revelation 14:12 12 Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus. John 8:36 If the Son therefore shall make you free, ye shall be free indeed. Mark 13:31 Heaven and earth shall pass away, but My words shall not pass away.

[@tuanquynhdinh3976]

I love the voice and accent of the lecturer. What a given gift that is a rare sound for your ears to absorb

[@claytonchar9232]

I know nothing about flying. However, after watching this presentation from start to end, I now have a practical knowledge of the principles of flight. Thank you for posting this video on KZbin.

[@robmanzoni5766]

"...after watching this presentation from start to end, I now have a practical knowledge of the principles of flight...." No you don't - and neither does the lecturer...

[@themaker9975]

She doesn't know what she is talking about and explains most things about an airfoil wrong, she even draws the basic airfoil wrong with too sharp of a chord.

[@byxfan2479]

I wish my school had this quality teachers. Most of the professors these days cannot even speak English. She has very pleasant presentation skills , they come to her naturally, wow , no words to describe, impeccable skills !

[@johnjaradat]

HHH PROFESSORS cant speak eng , waw what other language do you speak?

[@nisa-sw9fr]

I started watching these lectures because I want to be a aerospace engineer. I am 15 and my English is like B2 level, even i can understand her words and the physics principles that I didn't learned yet at school. Thank you so much.

[@adw6894]

I'm very stupid at physics but I still can understand this lecture. She explained it very well, great Dr. Tina.

[@mhrsolanki2020]

I wish I was able to let the professors know that I am nodding when they finish their sentences. Thank you so much MIT for this course.

[@ukemeobot9700]

In my subconscious I heard her voice and it felt right waking up this class. What I was watching before snoozing isn’t closely related but I stayed through the class, I believe I learnt something.

[@manhar3891]

My 1st day in ground class for commercial pilot license course has been excited, tense and unable to concentrate, due to dream come true. this video made me to remember those days.

[@mkamarul4873]

I'm a molecular biologist but somehow I stayed for the whole lecture. No idea why. I love airplane though.

[@imichaelno]

That's fancy! It's always cool to understand how all the mechanics works.

[@Tunechi65]

I'm a full time aerospace engineer working on propulsions and I still watched majority of it. I just love airplane talk even if I already know it haha. Plug people explain things differently so I like hearing how people take on the subject

[@ahmedhass146]

I am a physicist and wanted to watch something while having my lunch in campus LoL

[@craigwall9536]

I'm a molecular biologist too, AND a pilot, aircraft designer and builder and experimental test pilot. And this lecture is already disappointing. I wouldn't tell anyone to NOT watch, but I would urge them to ALSO build and fly model airplanes- and I don't mean fancy radio controlled models- I mean 1) start with balsa gliders and work your way up to 2) rubber band powered airplanes. By the time you figure out how to trim these models against the offsetting propeller effects, you'll know more than 80% of the pilots out there. (I will say that this lecture is better than most- the real problem is that it's tailored to a naive audience that should have been handed those balsa gliders FIRST...) As an example of her "equal transit theory" debunking inadequacies, she should have pointed out that "curved on top" is clearly not the reason for flight if those same airplanes can fly UPSIDE DOWN.

[@eigenvee]

Me too - great movie.

[@anshhseksaria5547]

There is something about her teaching that clinged me on till the last🔥🔥

[@abhirammadhu2973]

If this was taken in my college, the teacher will straight away move on with equations and mathematics and every students will be bored af

[@monotrope]

omg lol IKR, this is EVERY INDIAN ENGINEERING BRANCH XD

[@martm216]

Yes, a good friend of mine, Cambridge graduate, once began to explain aerodynamics to me mathematically. Then he saw my blank expression and drew a few diagrams showing airflow and arrows and all that.

[@techtravels401]

thats why ur phuddu and they are MIT😂😂😂😂

[@chizuru1999]

@@techtravels401 That's what he's saying. If the teacher explains then the student can try to understand. People are not dumb just because they are not taught properly.

[@helloshort4489]

@@chizuru1999 correct 👏

[@watchwithkenny]

This is the best Class I've ever attended in my life. I'm an Aerospace engineering student. I took aerodynamics class in year 2, 1st semester Some of these concepts remained vague until I watched this

[@boozinga]

If this was my teacher back in my Advanced level class, I would be teaching these in MIT now.. This is Great teaching! Nice and clean!

[@southpaw7920]

One of the best lectures I have ever taken through my life so far! And, this is for free!!! Now I realize I have been just a moron paying several thousand dollars and ended up just wasting my precious time. I suggest every teacher who are not as good as this Indian girl should pay their student for their time and for his/her own teaching practice opportunity.

[@mrhoffame]

I've watched 3 of this MIT videos. Maybe I should have gone to school here because these seem to hold my attention 1000 times more than when I was in school. These lectures have been AWESOME!!!

[@hansenvspredator7812]

The female professor is awesome. Her explanation was super clear and easy to grasp. And that male professor really needed to go to the bathroom towards the end of the lecture.

[@venki253]

Excellent lecture with practical application. Usually I don't bother to view longer videos but this video I watched completely. Hard to find such kind of professor now days. With clear in her concept and way of communication is excellent👍👍

[@eyeonu6565]

I took aerodynamics at San Jose State Aviation Prog in 1993.. and this Prof is good. I wish I had her , she has great voice.

[@TheLacedaemonian]

She is sho chill when she teaches, better way to teach, props for her!

[@brandonbennett4970]

@@philipmartin2919 Weight IS a force. what are you talking about?

[@sakumar]

@@philipmartin2919 The aircraft has mass. According to Newton's law of gravitation, it experiences a force directed towards the center of the earth proportional to its own mass. Colloquially this force is referred to as weight. For an aircraft close to the surface of the earth the force due to gravity is equal to m * g where m is its mass and g is the acceleration due to gravity. The net force on an aircraft traveling at constant speed and altitude is zero.

[@cherianphilip1511]

@@philipmartin2919 someone is jealous lol

[@RandomGUY-jh5hf]

@@philipmartin2919 F=MA and weight =Mg Both quantities are same. For weight the g is the gravitational acceleration.

[@EB-nz1qv]

I see what you did there. Your sense of humor really strikes a chord and is uplifting.

[@bibekanandabhattacharjee952]

Tina Srivastava is an excellent teacher. There is so much of passion and dedication in her presentation.

[@julimoreno173]

Absolutely ! Here's proof.

[@greninja3697]

Is she a indian?

[@bibekanandabhattacharjee952]

@@greninja3697 Not sure of her citizenship and without doubt she has at least some streak of India even if she is not born in India.

[@greninja3697]

@@bibekanandabhattacharjee952 she looks like a indian

[@bibekanandabhattacharjee952]

@@greninja3697 OK.

[@berkloader]

The excitement of the instructor is palpable. Kudos for the lecture, enjoyed it very much!

[@kenfrank2730]

I was an avionics tech for Pan Am airlines. But that was decades ago and I forgot most of the aircraft basic science. This video is a great review for me. I wish it had more mathematics involved, but I guess that's for another video. Thanks Tina for the good work.

[@oburuamos6438]

The instructor was very articulate and smart in her presentations. I just liked her use of contemporary examples to illustrate her points.

[@prateekmishra6245]

Calm and soothing. Loved her teaching. Thank you KZbin for recommending this video.

[@taha112498]

Yeah, so the plane I built myself crashed yesterday and now this is in my recommended.

[@jamalehaque9379]

😂😂🥺🥺🥺

[@shansuth7446]

lol

[@NeelTigers]

KZbin legit wants you to make airplanes dude lol

[@DrDey-jl4ii]

Ah, I see that you work for boeing

[@45thpaace]

@@DrDey-jl4ii funny, but a little too soon.

[@abdullah1299]

In order to answer the question at 1:01 where the question asked was, why doesn't the corkscrew effect cause the aircraft to roll?! Tina did give the correct answer. In order for it to make more sense, I'd add that the backward flowing air from the propeller flows along the body of the aircraft passing along the inner part of the wing (Part of the wing closer to the body) and thus doesn't have great effect on the aircraft due to the fact that Work done ( Force times Distance) isn't that much of a high figure as it is closer to the fuselage/body, which is the center, of the aircraft. However, when the backward flowing air strikes the tail of the aircraft, the Work done is significantly greater due to the increase in distance between the point where the work is done and the center of the aircraft, even though the force might be almost the same. (Work = Force x Distance) In conclusion, there might be a really tiny rolling effect on the aircraft but it won't be significant to cause the aircraft to actually roll. On the other hand, the corkscrew effect on the tail of the aircraft will cause a major effect on the stability of the aircraft. Interesting Fact: This is also why some aircrafts have their rudders' original position tilted slightly towards the right (Right Rudder) [ aft facing forward ]. This is usually set up by the maintenance crew at a known angle in order to avoid major stability issues faced by the corkscrew effect and thus make flying safer & easier. Feel free to ask any questions! :)

[@edgarfranco367]

Future AE engineer here and I watched the entire lecture. I'm in love with your channel and all your videos. I didn't know about the FAA pilot's handbook until I watched this video. I downloaded it and now I'll read it all. Thank you !

[@78anurag]

Do you watch these videos to learn or just revision of what you learnt in class?

[@edgarfranco367]

@@78anurag to learn :)

[@78anurag]

@@edgarfranco367 Wow cool

[@cornerblair24]

I finally completed B Tech and M Tech from IIT BOMBAY in Aeronautics Engineering. I can see and feel the concepts about Aerodynamics that is being taught here. Really, MIT have professors which are dedicated to their fields.

[@xanh350]

So what I learned today is, calculating lift is very hard, thank you for the lesson.

[@devinwick5056]

I love these lectures.❤️ I dream sitting in lectures like this and exploring how world works . Thanks for giving me an opportunity to get the same experience as a MIT student

[@rishabhchaudhary3918]

Thats definitely not even close to same experience as a MIT student .LOL 🤣

[@alizandieh3325]

I studied Aeronautics at MIT. I enjoyed watching this video. She is a great teacher. 👏👏👏

[@1998muza]

Hey buddy, which country

[@nshozeb]

bro is this graduate or pg level?

[@retinal6822]

@@nshozeb graduate, I'm pretty sure.

[@user-if6fm8ng5i]

But she is very slow in explaining I am pretty sure that se will be way faster after some lectures Or in the last few lectures in the semester They all do it slow at the beginning the just slap you with a massive content equivalent to 3 lectures in 1 hour and the excuse is that we are late It is you fault not ours! Sorry I was angry and I felt good after writing this😅

[@pd3138]

What's Her name bro?

[@sreekumarpillai9957]

I am a naval architect and work in the area of marine propeller design . I just chanced upon this video and sat glued to it . Wish I had a teacher like her in my freshman year.

[@00Phish]

Thank god for her talking about the equal transit theory. I was taught that when I was young. It never made sense to me and had me very confused. How she explained lift was always my hunch and makes way more sense. It made everything else I know about flight finally fall into place. Like a eureka moment.

[@MrMindlink]

Tina Srisvastava, you are a fantastic instructor. Thank you.

[@mukhtarahmed460]

Dr Tina Srivastava has very natural teaching style, she also has a command on the subject as an on the english language as well , blended with her confidence make this lecture a memorable.

[@climjames]

1:08:52 The younger generation is the video/tech generation so lack of windows may not be a problem if you use the flex screen technology to make the whole of the interior like an onmimax theatre. You can show nearly a 360 degree view of the aircraft as it is on the ground or in the air.

[@arnsking9253]

I need a teacher like this in Philippines , I stayed for the whole lecture calm , it's not boring because I have interest on aerodynamic.

[@gotahgemini6415]

loved her - great to see such a young talent educating others.

[@kssandhu4693]

Great smart professor..she compressed a lot of complex info into a fun lecture as quick as she could..Great job..kp the blue-side up n happy trails...

[@MoMadNU]

I can die in peace now because this is the first video I've seen that FINALLY gets it right. The only thing missing is explaining why air over the top of the wing tends to follow the surface of the wing which is the Coanda Effect. That also contributes to lift due to conservation of momentum.

[@musikk83]

thx, she didn't mention "Coanda Effect" thats what i'm searching for. she only mentioned Bernoullie low p -> high v , and that on top there is this effect, but not what is creating the lift then exactly.

[@CHANGUTHAKUR]

Maybe they didn’t need to go into that much detail for the FAA exam….

[@MoMadNU]

@@CHANGUTHAKUR I've taken the FAA exam. The irony is that the study text for the exam says it's Bernoulli Force that is the primary source of lift which is incorrect.

[@CHANGUTHAKUR]

@@MoMadNU well now we know why it wasn’t mentioned by her, maybe her teaching goals are to help her students ace the exam.

[@Learniverse787]

Excellent lecture, I can confirm that i have also been taught this false theory (equal transit theory) about lift in my college.

[@GMAN95120]

This dynamic MIT professor excels in elucidating fundamental concepts, making complex ideas accessible and engaging. In stark contrast, the demeanor of the senior faculty member, Professor Frank Handel, at Cal Poly, San Luis Obispo, was anything but inspiring. His aeronautics instruction was hindered not only by his heavy Polish accent but also by his propensity for belittling his students, deriving an unsettling satisfaction from their humiliation. A former pupil even took the initiative to apprise him of their career progress through a heartfelt letter, only to receive the document back, marred with red ink corrections addressing grammar and spelling errors. This incident marked the end of their correspondence. Professor Handel, however, took great delight in recounting this memory, finding amusement in the impact he had left.

[@51KTM51Hurricane]

People teaching stuff they do by them self knows more than the only reader teacher! was a nice hour in the MIT

[@mattpickering4223]

Thanks…she explained this very clearly it does help if you have take at least one course of upper level physics. But she explains its so you really dont need it loved it. Learn something new everyday

[@UrbanePrince]

Dr. Srivastava is an exceptional teacher, instructor and inspirational person. I’m a reasonably smart guy, and I learned a huge amount form her lecture. I believe that Dr. Tina should become a role model for young Americans. Far too many young girls and boys have no direction. Imagine taking a class to an airfield and having Tina introduce underprivileged children to the marvels of flight. How does a person learn all of this? Through having an enquiring mind. All that needs to happen is to plant the seed into one's mind. Minorities also require role models. Remember the motion picture Hidden Figures that covers the lives of 1950’s black female brilliant mathematicians working at NASA. Katherine Johnson, Mary Jackson and Dorothy Vaughn crunched the numbers prior to the application of supercomputers. During World War 2, the all-black military pilots known as The Tuskegee Airmen flew dangerous missions. They never lost a pilot. There is 1955 movie “The Tuskegee Airmen” that is a must-see. And finally, as a major role model, is Dr. Ben Carson is recognized as one of the world’s preeminent neurosurgeons. His childhood did have complications. However, by the ninth grade, he was improving in school and the rest is history as he went on to graduate from the University of Michigan Medical School and later Carson was appointed the John’s Hopkins university's Director of Pediatric Neurosurgery. There of course are other brilliant minorities who have achieves success in academia and architecture. However, it was Dr. Srivastava’s MIT lecture that captivated me, and due to her being employed in a senior position at Raytheon, one of America's leading R&D and defense contractors, I believe that CRT (Critical Race Theory horror story!!) as being forced upon school students is doing a huge disservice to our country. Throw out the horrible teachers. We need more intelligent caring teachers and professors like Dr. Tina to shape the minds of our kindergarten and grade school students in order for The United States of America to soar to newer heights, and who knows....on a wing or aircraft designed by a young mind who was inspired by Dr. Srivastava. Brava Doctor!

[@Completeaerogeek]

A tiny nipick here - while large surface on the rear of the race car is colloquially called a 'spoiler' they are in most instances, actually a wing that creates downforce. If they were just a 'spoiler the drag penalty would be too high. Modern race cars have carefully shaped wings that can be adjusted to vary downforce depending on the track to improve cornering. A spoiler on an aircraft does actually 'spoil' the lift and as a result can be used symmetrically to decrease airspeed or non-symmetrically for roll control.

[@ILSRWY4]

You are SPOT on... fundamental difference between a Spoiler and a Wing is one creates parasitic drag (spoiler) while sticking up in the slipstream, and the other (the wing) produces induced drag by producing "lift" upside down. Both produce downforce but in different ways. Indycars, F1 cars, IMSA DPi and the car @17:17 picture all have WINGS. A NASCAR stock car has a true Spoiler similar to those used on Aircraft. Spoilers on Aircraft when used as lift dumps 1) loss of altitude without increase Airspeed, or 2) on touch down, kills lift to allow the full weight of the airplane to sit on its wheels for better braking. Same for NASCAR, the spoiler kills the lift the car body produces allowing the car's full weight to sit on the track for better traction. But as you clearly pointed out Wings actually produce upside down lift called downforce. I'm surprised that MIT instructors never made that connection between cars wings and the horizontal stabilizers on tail of the airplane which like on the car are upside down wings, producing downforce.

[@TinLeadHammer]

​@@ILSRWY4Spoiler on the back of a road car like a hood on a hatchback is a spoiler, it spoils the laminar flow, which AFAIK paradoxically decreases drag.

[@jimred100]

The omission , when discussing aircraft rather than cars etc is the aerofoil . Air moving across objects creates some lift, but without the aerofoil , aviation would not exist as it is. Air moving across the top surface of an aerofoil moves faster, lowering the air pressure. The pressure on the flatter underside is greater. This is why the aerofoil is so efficient as opposed to other objects . Take the wings off the aircraft and go full thrust down the runway . If the tailplane was still attached , it would generate some lift and pitch the nose into the ground at speed . With no tail it would flip over . Neither of these are flying. It's the wings and the wings alone on any aircraft that generate anything approaching enough lift for controlled flight . And it's the aerofoil cross section that provides that. Quick mention of Bernoulli , but for flying , it's physics not maths. Blow across the top of a flat a4 sheet of paper. No downward force or angle required. The paper lifts because the air pressure decreases on the top.

[@darrellthomas5495]

Great lecture. The equal transit theory mentioned roots itself in assumptions. At 27:30, we mention calculating lift with the Navier Stokes equations, and one of the assumptions is the Kutta condition (28:45). The Navier-Stokes equations not only have conservation of momentum, but conservation of MASS. Specifically, between streamlines in an open system . In reality, air flows faster over the top than the bottom (38:57). Those faster molecules of air on top have to go somewhere, and this is the base drag on the trailing edge as it mixes with the slower flow rate on the bottom. Once you impose the assumption of the Kutta condition, along with conservation of mass (what goes in must come out or accumulate), then you have this equal transit confusion. Hopefully this clarifies where it comes from.

[@Cyberdactyl]

I had no idea MIT had courses this middleschool basic. This looks more like recommended reading material before an actual course on aerodynamics.

[@mitocw]

This is an IAP (Independent Activities Period) course. It is a special four week term at MIT that runs from the first week of January until the end of the month. Students, faculty, staff, and alums can hold sessions on things they really enjoy. Basically it's what the MIT community does for fun in between semesters.

[@CaptainSteve777]

@@mitocw This course is embarrassing. Ok maybe for a hobbyist, but it shouldn't be associated with MIT in any way. (fyi, I'm a 25,000-hour airline pilot. I've given flight instruction and seen many instructors as well.)

[@kinda_cold_in_the_closet]

yes i'm a middle schooler and i understood this

[@VivekVerma-zh2wk]

These lectures are like a magic.

[@meghanbartholomew3515]

Awesome lecture. I recently got my private pilot license and you explained things I’ve been studying in a way that made so much sense. Thank you.

[@rewiredbyadhd]

She was trying to be funny but it didn't work out, and I don't care. She's an amazing teacher and I love this lecture. Thank you MIT, thank you Mrs. Srivastava🙏🏻

[@fahadchirakkal785]

one of the best teacher that makes learning effective for students

[@_notME_77]

I think the Indian english accent is the most clear and audible I had listened.

[@zoro8800]

true

[@kaeez]

This is far from being an Indian accent lol, she sounds very American.

[@thewrongbike7709]

No part of her accent is Indian. Sounds like West coast USA to me.

[@JahidMasud]

It's pure American accent dude

[@adw6894]

That's not indian english accent. Her accent is American perfectly

[@magen1762]

I have flying phobia and seen thousands of air disasters to add my fear....i sat whole session her lecture and I am ready to fly once the pandemic over.......Tqvm Prof Tina

[@felipewestermann4979]

Thank you for the opportunity to watch this MIT lecture lying on my bed

[@thinking-Mann]

Watched this entire lecture completely at Friday night at 1:55 pm just due to yt suggestion😂. Hats off to the brilliant teacher indeed!!

[@jcc801]

I don't understand 16:05, who can help me......the race car generate lift only when it is an arched shape. So it's not everything moving through fluid can produce lift, right? And when it comes to fuselage producing lift, because fuselage is a shape of cylinder, it produces lift only when there is an angel between it and the airflow. If the fuselage flies horizontally, it won't produce lift, right?

[@AdroitRoger]

Why it is recommended to me ..I mostly watch reality TV, movies and songs on KZbin and deliver food for living ..I am never planning to build any aeroplane to deliver my Pizza

[@booli8542]

You never know...

[@monotrope]

lol

[@sandipanaich]

You must have disabled your history settings on KZbin..

[@rohitsamineni8990]

It might be because you friend had watched this, it is my case.

[@AdroitRoger]

@@rohitsamineni8990 it was a rhetorical question really

[@teerawatwongprasit1243]

I have been changed the whole life .... that 's answer my questions about this .... thank you kid....

[@lh3952]

She’s a way better instructor than mine was. He just pointed to the book and said study 🤷🏽‍♀️. Glad I found this

[@destinyovbiebo8988]

I teach math

[@Frilabird]

@Hellish that's not the point

[@ummmmmlikeeeee]

@Hellish You gotta understand that showing how things work, giving insight, leading the students on a journey is the point of teaching. Sure, you can do the method you mentioned, but that is not too helpful in remembering anything. For the textbook, you just memorize things. Not too helpful.

[@EB-xh6ii]

Excellent, absolutely excellent and free of charge. Well, paid through taxes, but a hell of an investment. Thanks MIT!!!

[@Conner_J_Stephens]

Min 41:00 correct me if I'm wrong, but I'm pretty sure because your flaps can increase lift generated. Using your flaps on takeoff can allow you to become airborne in a shorter distance. A pilot performing a short field takeoff typically has his/her flaps down to generate more lift to clear obstacles in a shorter distance than they would in a clean configuration.

[@thercbat]

This is Gold❤️. Glad youtube recommended this. Stuff is explained in such a nice easy way!

[@marutihr]

When she draws something on the board, it sounds like an airplane just flew by :D

[@swastikayogi9932]

hahahaha

[@cowboybob7093]

Very fluid stroke #pun

[@psd993]

Most race cars today, atleast the ones in the formal 1, 2 and 3 generate the bulk of their downforce not with the wings, but with how airflow is directed under the chassis and let out through the rear diffuser. But of course, what she said definitely holds true for a regular car with/without spoiler.

[@onebylandtwoifbysearunifby5475]

They sort of turn the entire car into an upside-down wing too. They establish a high pressure region at the leading edge (nose), which causes an acceleration of air down the concentration gradient, to the rear. Higher velocity: lower pressure, so downforce results. So maybe considering the front spoiler and rear as "flaps on a wing" is a better analogy?

[@steves2694]

The proximity of the bottom of the car to the race track creates a suction that helps hold the car down as air passes beneath the car. The cleaner the flow of that air, the greater the downforce. One reason you see the bottom of extremely fast race cars with fully sealed chassis bottoms.

[@AmbyPamby]

She is such a darling. It's not easy teaching a class. She keeps noticing students nodding, but they're not agreeing with her, just nodding off. 😥

[@frankyi7584]

She delivered the lecture really well, meanwhile the audience are very sharp too, noticing the inconsistancy between the explanations on P-factor and Gyroscopic pregression. Her reply actually may have not clearly explain why the P-factor doesn't cause a pitch up but yawn to the left of the aircraft. As a matter of fact, the P-factor at the moment when the propeller is entering into a relative pitch caused by the oncoming airflow does make the aircraft to yawn left, but if the propeller's relative angle of attack to the oncoming airflow maintains stable, then the center of the propeller's tracting force will stay stable to the left from the center as she explained. To put it simple, a P-factor is a stable and long-term situation, while the gyroscopic pregression is momentary coincident to the force applied. If the oncoming airflow changes rapidly it's magnitude and direction, the aircraft will be observed with flactuation in yaw and pitch even it maintains it's angle of attack, speed and propeller RPM, as the force generated changes. If you got chance to see the flight control system of a Bell 407 helicopter, you may find the cam assembly for cyclic control have a special curve in the slot, which I guess is to compensate the gyroscopic pregression effect that may cause the helicopter tilting to undesired direction when the pilot moves the stick.

[@dmssultan5118]

She is undoubtedly good to explain the subject matter!

[@usmansa2]

I have no relation to avaiation industry but somehow KZbin has recommended me and i watched the whole lecture

[@Boodieman72]

OMG finally a ground school that is accurate on how lift works.

[@kudamurapa7076]

she got half of it right and half of it wrong

[@null090909]

I believe she is wrong about the paper plane's shape. I convinced my planes fly longer (and slower) if I don't bend the edge flat. I think Bernoulli's principle applies at least as much as Newton's in this particular case.

[@felixernesto1366]

That's MIT man

[@Observ45er]

Actually she explains things fairly poorly, not extremely wrong and adds too many unnecessary things making it sound much more complex than it is. She does explain some things correctly, but hardly uses correct terminology even when she says common terms are needed at the beginning. I didn't hear her say vertical or horizontal stabilizer. She never clearly affirms that lift is the top-bottom difference in pressure, but only says "conservation of momentum which is technically wrong. Among several other things the gyroscopic precession should not have been mentioned and both of them couldn't answer the question about it. I can provide details on request.

[@Observ45er]

@@null090909 Bernoulli explanations for lift are always wrong. Newton explains most of the full story, but not in the way most amateurs explain it. A moving wing creates pressure gradients. Those pressures: A) provide more pressure under than over, thus pushing up. B) Those *SAME* pressures cause all the accelerations of air you see around a wing and this satisfies Newton's Third Law also. . You get a paper airplane to fly well and slower by paying attention to balance (CG) and trim (up elevator). See the book by Barnaby. How To Make & Fly Paper Airplanes Captain Barnaby Navy

[@birdman4274]

41:53 Flaps on takeoff also allow an aircraft to get into the air sooner (not necessarily faster) because of things like short runway or contaminated runway (slush). Flaps provide lift at slower speed.

[@Algrimor]

For P factor, when the aircraft pitches up or is flying at a higher angle of attack than level, the right descending blade has an increased angle of attack to the relative wind than the left ascending blade. This difference in angle of attack creates a lift differential between the two, and the descending blade is creating more lift aka thrust, and because there is more thrust being produced by the right propellor, there is a left turning moment. P factor is most pronounced at higher angles of attack (increased pitch) and high power settings, like a climb or takeoff, or when practicing slow flight.

[@PraveenkumarCEH]

Me who bunked most of my college lecture is attending all possible good lectures on KZbin recommendations. Quarentine diaries

[@KazimierzSurma]

There is a misunderstanding. If there is a smooth steady flight, their lift is equal to the weight and thrust is equal to the draft. Not has to exceed, but be equal. Only while changing velocity or altitude do these forces exceed one over another.

[@NazriB]

Lies again? Battery AA

[@caradellinowazer2988]

The presentation is absolutely adoring and great. At some points I am not entirely sure if they (both) give intentionally short and simplified answers or if they in fact don't really have the answer. Most prominent this was on the question on the origin of the p-factor, none of them mentioned the asimetrical angle of attack on the propeller as the reason for the asymetrical thrust creating a force with a line of action right to the center of gravity, resulting in a momentum leading to a left side yaw....

[@adelzaki8177]

The best instructor and smoothly feed me with information . thank you. I wish if I could print out that lecture to be handy.

[@gocybertruck8189]

The instructor speaking is clear and concise. I'm also interested in private lic so I got hooked on it and completed the video.

[@davidsine4390]

First she says lift is created by the wing redirecting air in a downward direction. Then she explains lift is created from Bernoullies principle. Take an ordinary 8.5 X 11 peice of paper. Hold it more or less horizontal to the ground between your thumb and index finger. Now, blow down only over the top of the paper. The paper rises up even though no air is being deflected down. Why? Why does the paper rise up? When you can explain why the paper rises up even though you are blowing down onto it, you understand the main way a wing creates lift.

[@viggolundhild3086]

well, if you only blow on the bottom side of the paper you will note it goes up. bernoullies principal will lift the sheet of paper but newton will lift the rest of the aircraft

[@davidsine4390]

@@viggolundhild3086 That still doesn't explain the contradiction in the video. She stated (implied it's all impact IMO). Does a wing produce lift via Bernoulli's principle or Newtons? Is it one or the other, or is it both? If both, then is one much greater than the other? She also stated air molecules don't have to meet up with each other at the back of the wing. That's true. But if they don't, then a void occurs somewhere on the top surface of the wing correct? Which I don't beleive happens. I would suggest even a flat piece of wood inclined to an airflow requires the air molecules to more or less meet up again at the back of the board. Which essentially requires the molecules on the top of the board to travel faster. They push on each other if you will. Also I would question that impact forces create most of the lift. I have always taught students the paper example and included the point about impact forces as well to punt the issue. None of them ever questioned it, but I appreciate the input.