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Пікірлер
@eduardobarros4109 4 күн бұрын
Amazing Giuseppe!!
@giuseppescifoni4563 10 күн бұрын
ESSENTIAL BIBLIOGRAPHY Double Pendulum General Theory: en.wikipedia.org/wiki/Double_pendulum scienceworld.wolfram.com/physics/DoublePendulum.html Double pendulum Lagrangian formulation: Diego Assencio: dassencio.org/33 Geogebra Simulations: Juan Carlos Ponce Campuzano: www.geogebra.org/m/szj8njmc Nicolas Fox: www.geogebra.org/m/sqpjntpn
@BeautyInMath 12 күн бұрын
Hello! Very nice presentation. Love both, the physical and GeoGebra model. Thanks for sharing! :)
@giuseppescifoni4563 12 күн бұрын
@@BeautyInMath thank you!
@andif6327 11 күн бұрын
I like the general insight, that "chaos" can be described with mathematik models. So is it still chaos then 🤪? Very nice direct comparison at the slowmo-videos!
@jonathanalicoronamorales4662 3 ай бұрын
Saludos Giuseppe
@giuseppescifoni4563 4 ай бұрын
S.6: If we invert the formula in the square and we write T_f as function of t_f we find a negative exponential whose time constant is 1/alpha. That says an important info: whichever is the starting temperature T_0, T_f will tend to T_1. Actually it is sufficient a time of 3/alpha for T_f becoming practically same of T_1
@giuseppescifoni4563 6 ай бұрын
Slide 6 -Graphic with two coloured lines: the blue line runs from right to left (service fluid), the red one opposite (process fluid). On the x-axis is the exchanger run lenght, on the y-axis the temperatures. -Formulas: the specific heat Cp can be different if different fluids. Slide 7: Lambda in the h formula is the conductivity of the fluid, not to be confused with the lambda value of the steel used in the K formula above. Slide 9: K is found using the formulas in the right up square.
@giuseppescifoni4563 6 ай бұрын
Remarks. S.10: the derivative of the Potential Energy "V" is actually a force. S.11: the reaction at pivot P is missing in the drawing with only two bodies. The reaction should have same direction as the bar OP.
@radhekrishna6483 7 ай бұрын
Thanks, Great work
@VercilJuan Жыл бұрын
Thank you for this sir
@husseinatetti-balogun1240 Жыл бұрын
thank you for this i really appreciage and you went into the actual formulas and application of them
@BongoFerno Жыл бұрын
Where is the sun relative to all those drawings
@giuseppescifoni4563 Жыл бұрын
The sun is displayed as well. You should recognize it. See at the yellow luminous object, the biggest one. Pls tell me which slide are you referring to.
@BongoFerno Жыл бұрын
@@giuseppescifoni4563 were is the sun at 1:00 and 1:30
@giuseppescifoni4563 Жыл бұрын
@@BongoFerno there actually is not the sun explicitly represented but a generic celestial body since the theory is valid for any body. The sun is represented from minute 6:00 on where a specific mission is displayed.
@2010amik Жыл бұрын
Troppo forte! grazie Giuseppe! 🤓
@goliver1967 Жыл бұрын
Un bel ripasso... Una domanda: che succede se ad un sistema si carrucola con un MA per esempio pari a 4 metto lato carico e lato fune 2 pesi uguali?
@giuseppescifoni4563 Жыл бұрын
il carico si solleva con accelerazione costante a=3F/m dove F é la forza applicata (uguale) ed m la massa del carico. Se il carico é un peso, allora F=m*g, a=3g
@giuseppescifoni4563 Жыл бұрын
SLIDE 7&13: Graphic at the left bottom: the arrow with f (vertical displacement) should connect the orange line (height h1) with the segment AB and not with the force F. SLIDE 8. See the Geogebra File: www.geogebra.org/m/tv977b9d SLIDE 15: Credits: -Car model: 3dwarehouse.sketchup.com/model/3e72a67c-3824-4244-a985-0b8693174839/BERGER-Cable-Car-ATW-100-Pers -Rope section: barsandrods.arcelormittal.com/wiresolutions/wireropes/new_site/ss/4399/ropes_for_cableways/EN
@heidigilmore4543 Жыл бұрын
'Promo sm'
@giuseppescifoni4563 Жыл бұрын
You mean I shoud promote my channel ?
@giuseppescifoni4563 Жыл бұрын
Slide 7: The Y-Values of the chart is Newton (N) and not kg-f.
@jonathanalicoronamorales4662 Жыл бұрын
Excelente book Giuseppe, easy to use congrats.
@nsbiro Жыл бұрын
Great masterpiece Giuseppe! Highly recommeded to everybody who deals with utility equipments in daily job or just is curious about this fascinating field
@alessandrolupi1957 Жыл бұрын
Congrats, a very practical book which I'm sure will ease life to many engineering students and practising fellows!
@robinberry5421 2 жыл бұрын
𝐩яⓞ𝓂𝓞Ş𝐦 🎉
@teresabencetti8057 2 жыл бұрын
Thank you very much interesting.
@milanmihailovic2113 2 жыл бұрын
Sir you could tape the cell phone to the canister and measure the acceleration using an accelerometer app. The application uses the sensors in the phone and draws a graph of the acceleration.
@giuseppescifoni4563 2 жыл бұрын
Great. Thanks for the tip!
@denesdeni9122 2 жыл бұрын
Fantastic! 2 months ago I have realized a way to express Kepler 2nd law with polar coordinates. In this video, your presentation just validate my derivation. I'm surprised while you mentioned the Binet formulas. This is the first time I have ever heard from him. It looks I had the similar logic as Mr. Binet. It's a surprise for me. As for Binet2 and Binet3 those further equations was not familiar to me. Therefore B2, B3 are new and understandable knowledge for me. Thank you for the video Sir.
@galactusgalan1181 2 жыл бұрын
Hi I like very much these lessons. I have one question, where can I buy solved problems book similar to these lessons or homework with solved problems. I suppose you're a teacher, a good teacher. Thanks for your great job and grazie mille
@giuseppescifoni4563 2 жыл бұрын
Hallo my friend, there are many astrodynamics books with exercises. The one I suggest is from Howard Curtis "Orbital Mechanics for Engineering Students", you can find a couple of links hereby. However I suggest you to take a view first if they are what you are looking for. By the way I am not a real teacher, astrodynamics is just my hobby, my actual job is utilities & piping engineering, I am a mechanical engineer.
@giuseppescifoni4563 2 жыл бұрын
www.elsevier.com/books/orbital-mechanics-for-engineering-students/curtis/978-0-12-824025-0
@giuseppescifoni4563 2 жыл бұрын
www.amazon.de/Orbital-Mechanics-Engineering-Students-Aerospace/dp/0128240253/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1648069674&sr=1-7
@goliver1967 2 жыл бұрын
Nice. Very clear and interesting.
@brendawilliams8062 3 жыл бұрын
If you wonder if something is true then check out what the spacecraft is doing. It’s a no problem to them. It is advancement and money of government
@emanueleplasmati2564 3 жыл бұрын
astounding presentation of Kepler laws with a complete track towards the famous formulas
@emanueleplasmati2564 3 жыл бұрын
Great presentation! very interesting detecting differences between AD and AP
@giacky 3 жыл бұрын
Nice series, very interesting, but could you also talk about drag (not reletively to the series but a general video), talking about how it affects trajectories, a way of include it in the calculations, orbital decay and how it changhes relatively to temperature and pressure, thanks,
@giuseppescifoni4563 3 жыл бұрын
thanks for input, Mr Giack. I will consider to treat the argument in future. The present seminar is dedicated to the very fundamental topics, that is the reason why it is not discussed here. Should you be interested, however, you can have a look at this video of Prof. Mattew Peet. kzbin.info/www/bejne/f3vMlJiuhtZ5psk
@giacky 3 жыл бұрын
@@giuseppescifoni4563 Thanks, by the way, great job you are doing, continue like this
@giuseppescifoni4563 3 жыл бұрын
The seminar will start on Saturday 08.01.2022 @ 15:00 GMT+1 by MS Teams.
@giuseppescifoni4563 3 жыл бұрын
Pls write below if you are interested, so that I can arrange the following steps. My idea is to use MS Teams.
@antoniomattia6540 3 жыл бұрын
Complimenti per l'iniziativa Giuseppe. Se i moduli sono strutturati in modo che li si possa seguire indipendentemente l'uno dall'altro, mi farebbe piacere seguirne alcuni
@giuseppescifoni4563 3 жыл бұрын
Grazie Antonio. I moduli solo visibili nei commenti del video. Purtroppo non sono tutti indipendenti. Diciamo che dal N.1 al N. 5 sono in sequenza. Poi si può scegliere di passare ad uno dei successivi a piacimento.
@goliver1967 3 жыл бұрын
Il corso parte sabato 18?
@giuseppescifoni4563 3 жыл бұрын
Prima si raccolgono le adesioni, poi vediamo...
@giuseppescifoni4563 3 жыл бұрын
At slide 13 the Venus parameters in the table right up are not correct. The right ones are those at slide 12: Day= 8816 Radius= 0.727 UA Theta= 264.8 deg.
@foley10x 3 жыл бұрын
I like this video and was using it to validate my calculations and noticed there is an issue between slides 12 and 13. On slide 12 the info for Venus is Day 8816 R.727 Theta 264.8 deg. On slide 13 it is Day 8795 R.724 Theta 231.4 deg. It looks like the data from slide 12 is used throughout, however I calculate the arg pe to be 175, not 165. Can you verify which is correct?
@giuseppescifoni4563 3 жыл бұрын
Hallo my friend. The Venus parameters at slide 13 are not correct sorry. That must be a type error. Actually the travel time is set to 158 day, also the right date must be 8816=8658+158. The Argument of Periapsis of the transfer orbit is 165 deg instead. Reason I explain here: by getting E1 from formula at slide 10 the inverse cosine has sign ambiguity (+/- 3.006 rad). If you take the positive result (+3.006 rad) and you plug that into the arc-tangent formula below, you find theta_0 (arg_pe)=176 deg. But if you take the negative value (-3.006 rad) then the arg_pe=165 deg. To check that the negative value for E1 is the correct one, you may repeat same procedure for eccentric anomaly E2 and then finding theta_2-theta_0 and finally arg_pe. You see it turns to 165deg in both cases.
@ii8667 3 жыл бұрын
6:20 Hello mister, I closely watch times the video and can't understand how you find this value. I know it's been over 2 years but could you explain me that point please. Kind
@giuseppescifoni4563 3 жыл бұрын
Hallo Ibrahim, the starting Trust T_0 is an input. It is the trust at zero speed. But since the motors are two, then the mass flow M_J per motor is the half of the total mass. Also T_0=2*M_J*v_J. If you tell me your email (or send me a message) I can send you complete data of the B-737-800 Aircraft and the whole simulation study. Regards. Giuseppe
@ii8667 2 жыл бұрын
@@giuseppescifoni4563 Hi man, finally got where I was wrong. thank you for the video n the doc. i couldn't get why applying 181.9 kN whereas 1engine produces up to 120 kN (via wikipedia). I forgot there were 2 engines XD. thx again bro
@gerlem.matangcas5139 3 жыл бұрын
tysm, sir.
@giuseppescifoni4563 3 жыл бұрын
Bibliography: A Numerical Approach to Study Ablation of Large Bolides: Application to Chelyabinsk www.hindawi.com/journals/aa/2021/8852772/ Fragmentation model of meteoroid motion, mass loss, and radiation in the atmosphere repository.arizona.edu/handle/10150/655949 Theory and equations for “Craters from Impacts and Explosions” www.lpi.usra.edu/lunar/tools/lunarcratercalc/theory.pdf
@J-Excel 3 жыл бұрын
Cute cruiser !
@goliver1967 3 жыл бұрын
Sicuro non si sviluppino sostanze tossiche?
@giuseppescifoni4563 3 жыл бұрын
Qualcosina...
@emanueleplasmati2564 3 жыл бұрын
Good insight on mechanical aspects of the problem..Honestly I need to listen again and again to review the formulas exploited but it opened my mind and it was so brilliant. I cannot image the time investment but you can breath the passion and the confidence for mathematical basics. Thanks so much Giuseppe
@giuseppescifoni4563 3 жыл бұрын
See an explanation how to find orbital parameters from state vectors and viceversa here (Lesson 7): kzbin.info/www/bejne/nKKTlaF9h86Kra8
@giuseppescifoni4563 3 жыл бұрын
You can find a complete course of Orbital Mechanics here (KZbin Channel of Prof Matthew Peet): kzbin.info/aero/PL5ebyVGQORm6IUCJIuXGYj21o91Uyrwc4
@giuseppescifoni4563 3 жыл бұрын
typing error at slide 10: the last two columns are s (seconds) not cm (centimeters).
@abdullahalnahian1266 3 жыл бұрын
I want to contact with you......
@giuseppescifoni4563 3 жыл бұрын
Great. I am happy. You will find my contact on the channel Info.
@johnbspringer 3 жыл бұрын
An example of another idiot that does not check his audio before posting. Can't hardly hear a thing and your accent makes it 5x harder to decipher your low volume. I was so interested in this topic but is was too painfull to try to listen to the end.
@teresabencetti8057 3 жыл бұрын
The explanation is very clear. Thanks
@caterinascifoni8464 3 жыл бұрын
👍👍👍
@gautamsandesh6076 3 жыл бұрын
Such an informative video. 👍🏻👍🏻👍🏻Very Nice
@emanueleplasmati2564 4 жыл бұрын
Molto ben trattato l'apparato matematico. E il metodo numerico estremamente efficace. Sarebbe molto interessante una narrazione aneddotica della storia di questo problema. Solo una mia personale curiosità. E gli sviluppi nella ricerca degli obiettivi di ingegneria aerospaziale.
@giuseppescifoni4563 4 жыл бұрын
Certo. Sarebbe molto interessante. Una applicazione molto attuale è la determinazione delle orbite degli asteroidi con potenzialità di impatto sul nostro pianeta...
@goliver1967 4 жыл бұрын
Ottimo, molto chiaro e ben documentato con formule ed esempi 👏👏
@giuseppescifoni4563 4 жыл бұрын
Grazie amico.