What makes BIRD STRIKES so dangerous?

[@SabinCivil]

The first video of 2018 ! Please extend your support at www.patreon.com/Lesics

[@_betaight_]

First

[@_betaight_]

Cant belive im first

[@SabinCivil]

Dear viewers, research work of this video has been one of the most difficult one. It consumed all my time of this month. Here are the references I used for the script production. I hope, we explained the compressor stall in a simple manner without missing the details of its physics. 1)Jet Engines - Fundamental of theory, design and operation by Klaus Kunecke ; pages 106-114 2)Rotating stall and surge ; A.H Stenning, Department of mechanical engineering and mechanics, Lehigh University; 1980 ASME 3)en.wikipedia.org/wiki/Compressor_stall 4)aviation.stackexchange.com/questions/15816/what-exactly-is-a-compressor-stall

[@mixup9979]

Learn Engineering what about safety sieve if the apply before engine?

[@mechtrotip5034]

Bro you're are secret bro of engineers 😀😃

[@yelectric1893]

This is really nice, thank you!

[@Money4Nothing]

Great work!

[@MrAmgadHasan]

It would be nice of you to provide the references for each episode.

[@northerniltree]

In bird school, this incident is referred to as a plane strike- and why it is so dangerous.

[@johnsjohnson]

because it causes instantaneous death? or as I like to call "groundbeefication"

[@genraldmoney8171]

@@johnsjohnson hmm.... I'm not sure how a bird can turn into a cow cause that's what beef is.

[@Ro7777]

@@genraldmoney8171 🤣🤣🤣 right!!!

[@genraldmoney8171]

@@Ro7777 correction *groundbirdification

[@thunderstorms180]

@@genraldmoney8171 Yeah because when the plane hit the ground on impact people turn into groundbeefication

[@snakesocks]

No American Bald Eagles were harmed in the making of this video.

[@blitz4974]

I'm a pilot this video is really well put and it clearly states why bird strikes are really dangerous for us and our passengers. Good job Lesics.

[@elishakimutai3885]

Why they don't cover the engine part

[@blbreptiles4126]

​@@elishakimutai3885 Grates or bars would not allow as much air to go in the engine, creating the same problem as a bird strike

[@kushalsheth2738]

Man you are doing a fabulous work .

[@franciscoxixleal1414]

Kushal Sheth?

[@pushing2throttles]

I'm a pilot. I compliment you on a good animation and a good explanation of the basic points of a complicated topic. I especially enjoyed the animation though, keep up the good work!

[@mr.dhinesh8356]

You r pilot s r no

[@abdulkalammampad8654]

The ordinary people like me are much perplexed, the role of this engine 🤔

[@Kabbinj]

I actually though an impact with a bird would bend or shatter turbine blades, and thats why engines would fail. Really interresting to see why it actually happens! :)

[@laminarflow51]

kabbinj2 yeah that can and does happen as well.

[@blooogisss]

usually rotor blades are made from a metal that forms a single crystal. Single crystal metals are extremely tough, because they don't have grains (actually, a single crystal metal is the only grain) and that means that there are no gaps between those grains that weaken the blade.

[@joevignolor4u949]

One thing they do during the qualification of a new engine design is to use a large cannon to fire dead chickens into the engine while it's running. The fan and compressor blades and the rotor hubs have to be able to remain together in order to certify the engine for flight. Also the "turbine blades" are in the back of the engine. Bird strike only directly effect the fan or compressor blades in the front.

[@LM90MTL]

yea i guess it gets torn up on the main blade lol

[@grahamj9101]

A large enough bird will bend and cause damage to fan and compressor blades. That's what happened when Canada Geese went into the engines of USAir 1549 and made 'Sully' Sullenberger a hero. Even small birds can cause significant damage. Please note that it is the compressor blades at the front of the engine that suffer significant damage. The turbine blades at the rear of the engine might suffer minor damage.

[@Kittsuera]

so... riddle me this, why isn't a guard able to be put IN front of the engine so that objects/ obstructions get deflected out? is it a cost issue? an efficacy issue? is it a increased risk? surely someone has to have already asked this question.

[@pseudolullus]

It would severely disturb fluid dynamics

[@SuperJeremi10]

It would reduce airflow to the engine or possibly its self get sucked into the engine.

[@PointyTailofSatan]

Imagine the confusion if both pilots were named Serge.

[@nemesisman123]

Lots of hard work and research paid off through this video. One of the best engineering videos and this is a real world problem that occurs today. Thanks guys

[@hgbugalou]

I lived under the southern approaches for Memphis International when I was younger. A Delta plane had a compressor surge over my neighborhood back in the early 2000s. It sounds like bombs going off outside.

[@IshanKhandelwal]

Best engineering channel for me.. please upload more videos on electrical engineering and machines

[@Yathuprem]

Awesome content buddy. Keep up the good work

[@joevignolor4u949]

When I was in the Air Guard we had a single engine F-100 Super Sabre suck in a large goose while on final approach. The J-57 engine experienced a massive compressor stall and started to wind down. The pilot put his hands on the ejection handles and got ready to eject. However, just before he pulled the handles the engine RPM and EPR started to rise again as the engine began to recover. The power came back up and he was able to land safely. Afterwards I saw the disassembled engine in the engine shop. There were feathers, bone and bird guts present as far as 3/4 of the way back through the high pressure compressor. One thing that helped save the plane was the long intake duct that the F-100 had. There was evidence that the bird had been smashed apart as it ricocheted several times off the walls of the intake duct while traveling down the length of the duct and it was probably already in many pieces before reaching the inlet of the engine. As bad as sucking in a bird can be most fighter pilots will tell you that the bigger fear is a bird coming through the windscreen, into the cockpit and hitting them in the face. Fighters do a lot of high speed flying close to the ground and a bird entering the cockpit at 600 MPH can be disastrous.

[@georgioskalogiannidis7293]

This channel is a gem

[@RanjithKumar-yb7qc]

I just started to watch this from channel 3 days am just loving it and expecting playlist of educational videos

[@thebeehive7261]

Very informative... Thank you Team Learn Engineering ... U have been so useful to understand such topics in detail...

[@yogeshpatel-bx2qm]

perfect understanding Lesics, proud on you, I am a gas turbine operator, we face this type of issue sometimes due to bleed valve malfunctions.

[@shaikhmullah-ud-din1964]

2:28 PETA be like: we hope no bird was harmed in the rendering of that simulation or else we are gonna sue you!!

[@mr.sandhu587]

So *KZbin* also has educational side WoW great

[@rezapratama8609]

this feels waay more refreshing than those ass and boobies no brainer channel

[@mr.sandhu587]

Reza Pratama true

[@rihanm.sgoogleaccount4462]

Ye.. (Is this sarcastic?)

[@mr.sandhu587]

Rihan Mohamed Jaleel no clue :-D

[@soulassassin0g]

WoW? World of Warcraft?

[@AntoniaAtaide]

This video, the explanation is absolutely amazing and really clear. Thanks!

[@tanvirfarhan5585]

ur channel is going a very great stuff man keep it up bro :0

[@viktjumper]

Very nice and clear explanation of this dangerous phenomenon.

[@moinaction]

Technology has improved all these years and I hope there should have been a solution to bird strikes to jet engine. When this happen, it's not like there's an alternative, bird strikes, engine became faulty and people's lives are in danger.

[@SirGregory]

To see a real-life bird strike caught on camera with bird entering engine and the aborted takeoff have a look at this short video: kzbin.info/www/bejne/fWbSYXhrocSgrrs

[@oshinwane6902]

does the bird die ?

[@rodrigomendes1980]

If you think about where he enters for that to happen, yes

[@radioactivated]

You try forcing yourself through a fan at high speed

[@casilasgoaler]

No, it comes out from the other side.

[@crystalball020]

oshin wane No it doesn't, now go back support peta.

[@niccatipay]

If the bird is lucky then he/she *There are only 2 genders people* will be thrown into the bypass and fall out with the possibility to recover from loss of consciousness.

[@hussaini24]

Thank you for making all these educational videos. Pls make a video on how TRAIN works.

[@richz439]

I was left with questions: Does the bird getting ingested change the air flow? Does the pilot control the parameters mentioned at 5:50 (or a computer, or?) Otherwise the video has lots of great information and well explained.

[@petethegreekre]

Great video really enjoyed it but one thing that could be better is that people know that a complete engine failure may have a "catastrophic" effect, as you said if all engines fail not a single engine failure! Pilots are trained to fly with engine failures, the in-flight shutdown of an engine typically does not constitute a serious safety of flight issue. The plane will not stop flying since the pilot is familiar with the procedures to avoid a crash.

[@satyamchourasiya7094]

Very good efforts. Hats off. All the best for future.🙌🙌

[@JPN850R]

Not a big of a deal, but "throttle" is air-regulating system for internal combustion powerplant, and gas turbine engines' power output is controlled by the amount of fuel introduced into the burner section, so I'd like to call it either "thrust" or "power". Your animated descriptions are great help in understanding aviation systems; should apply for patent or sell these to airlines or component manufacturers. Reading textbooks and looking at schematics can do only so much for average techs like myself.

[@aaronwang440]

Nice video! By the way, what is the background music?

[@shudhanshudwivedi92]

You are amazing, your explanation and your video graphics are amazing. Your everything very very amazing.

[@harishramesh3634]

loves your animation for explaining engineering

[@aftabansari1442]

Your animation is great

[@ourworld1816]

Hey dear ! you're doing the great job. Thank you for uploading such videos. It gives us many information ......

[@terryanderson7316]

That was really helpful. Thank you for all the effort you put into your presentation

[@rpmmotovlog]

What kind of programmes are u using for animations?

[@pvsantos999]

Great video. Once correction: at 2:02 the correct spelling is "separated", NOT "seperated".

[@manjunathmr8743]

What a technical explanation, it is amazing

[@MahiMahi-hv8rt]

Full working process from starting to ending of a motorbike ,please make a video on it....

[@mountainpass4255]

It is a minor detail, but it should be noted that there is only air bypass in the housing of turbofan and turboprop engines. Turbojet , scramjets, and ramjets do not allow any air bypass inside the engine housing. This allows non-bypass engines to generate higher exhaust velocity but at the sacrifice of fuel efficiency. Thus, more bypass = less speed but more efficiency and low speed pushing power.

[@KamranKhan-mt2dx]

If we attach lattice both side of the compressor, then ? Will be it helpful ?

[@jamest.5001]

can it not through the balance off to the point of catastrophic failure? along with the vibration . from the burping and farting. from the compressor surge. often hard materials are more brittle than softer materials. with the speed .vibration. all the forces. couldn't the impeller just break and the engine simply fly to bits? great video. with the smallish gaps between fins. maybe with the speed of the engine. and air speed. maybe it can just get blocked by bird! reminded me of the guy in the air force that got sucked in a engine! but only just before the turbine. so he lived to tell the tale.

[@kushagratripathi113]

Explained in very easy language Nice job

[@Manoj-Guptha]

@Lesics When such a sophisticated engine designed, why not there there is a preventive method for bird strike is it good to install Cone Shaped mesh to avoid such things, if not why?

[@triloknarware4433]

Great video sir

[@angelobreda-pelet]

What software did you use to make this animation?

[@feynstein1004]

+Aleandro Aleandro That's exactly what I guessed lol

[@osamaabdallah9021]

I pressed on on add to support channel thanks man good work

[@HelloKittyFanMan.]

Nice graphics! But, haha, it looks like someone took an originally stationary engine with highlights on the once-"upper" compressor blades and then to animate, just spun the highlights all the way around with the blades, instead of leaving the highlights basically in place as the rotors spun beneath them. :-D

[@2idolon]

Excellent work , very interesting , and concise . Thank you . Love learning .

[@ikhanvids2804]

As a student I request u.. Please! Make a best video on laws of thermodynamics & explain in it

[@MrEdustyl]

I like the Video. Little criticism: An axial compressor always has a set of rotors and stators in the following Manner: Rotor STATOR Rotor STATOR... For the turbines it is the other way around. In my opinion it does not become evident in the animation.

[@keving9777]

can a compressor surge happen without a compressor stall

[@carmelpule6954]

Is the rotation of that jet engine shown to be in the correct direction?

[@StrangePath]

I saw this happened during landing of SkyGates 747F's number three engine at HKIA. You could hear that bang noise from 2kms away.

[@jyothiswarooplingamaneni3724]

Thankyou for your hard research on it. And please upload Ram jet engine working.

[@QLTD]

scary stuff, *great video* thanks

[@jorjhudson5565]

I have a doubt If there is a bird strike and engine cannot breath. Then why there are no openings on the outer chamber so that the air which serves a purpose of cooling will also redirect the air for suitable pressure in the compressor in case of flow reversal

[@sethgestro678]

For those people who are asking why there isn't some sort of protection before the fan. It would have been done if it was that easy, but it's not. A grating of some sort would only be extra weight and drag, it would also be useless in the case of a bird strike, especially at speed, combine that with the massive suction of the turbofan engine and you have a super vacuum cleaner. The bird will only be slapped to bits by the grating and still go into the engine.

[@jeremija5]

@Learn Engineering Why the rotation spiral amblem is set in wrong direction????!!!

[@caringresearchandtrading1376]

Please upload more videos on this

[@boomerschmaltz]

Wonderful video! Misspelled word, 'seperated' at 2:03. Thanks for another great video!

[@dhruvpatel6604]

Why not install a mesh or sieve at the inlet?

[@armaky4962]

You my friend should make a correction in this animation of the operation the angles of Blads and stator are conflicting! !

[@opl500]

It's like bent valves and misfires in a piston engine.

[@federicolopez-casildojr1451]

Where do you get these CAD animations, or what program so you use to make them?

[@eberbessajunior9051]

Great video, great job... It deserves our like...

[@Atish910]

I know its a stupid question but why don't we just use a wire mesh before the turbine to limit any big things flying into it? I mean it wouldn't impact the airflow that heavily.

[@AmbientMorality]

Meshes do impact flow - large pressure losses across a mesh, meaning compressor has to do more work, meaning more fuel needed to keep the engine running

[@huss1205]

So a bird going through the blades won't damage the blades? and if blades are damaged, a loss of balance might occur due to the loss of the blades and the engine will vibrate? no expert, but only wondering...

[@bhuvanrajmaddipati4510]

The fan blades at the intake are made of highly toughened titanium alloy so it requires great momentum to damage them usually birds couldnt fly at high speed that too near runway and their mass also negligible so it cant damage blades

[@sumandalal2175]

ty fr such a easy n informative vedio

[@hamsterindonesia6548]

1:24 why do propellers in unit 2 were revolving in opposite direction compared to unit 1 & any other propeller?

[@toddmeuth2962]

Thank you! You have some of the best brain food on KZbin.

[@fdgjffh1963]

Can you like put a wire sieve in front of them so that air can get in but birds can't?

[@StarTrekOnlineLive]

So some simple bars before the engine air intake could prevent all this damage?

[@alessandrobianco7183]

It will be an obstacle for the air flow

[@akhilsreekumar7770]

Nice video. However, aren't modern engines tested to withstand birdstikes or does the pilot simply have to shut down the engine?

[@petrospetrou8761]

You deserve more subs

[@Dave-bi8se]

Didn't get how bleeding the air is going to help in compressor stalls, if you're reducing the air then the amount of unburnt fuel increases even more. Can someone explain?

[@StudyCircle-hg4bj]

Excellent explanation sir... Thank you

[@satishsoni4870]

Great...... Educational video sir... Plz upload more..

[@Gourmondise]

Birdemic, also if Sullenberger landed that plane on the Hudson then I believe it is possible for the bird to come out at the other end of the turbine just fine.

[@nivaldo758]

Very informative. Fantastic

[@AnilArya51]

Can someone share the link of rotational stall in a jet engine?

[@indepviewpt]

Axial flow compressor stall and surge is a quite complex scenario. Trying to simplify it may not do it proper justice. For example, it is entirely possible to operate an axial compressor with a stage in "stall" and the compressor will behave just fine. This is not a "digital" phenomenon.

[@rogerab1792]

this is great! keep going

[@nishchaytiwari8537]

Don't you think that the stator orientation is wrong? if you check the velocity triangle.

[@Common_Manithan]

Great Video, explained well. Thanks a lot..

[@siddarthbhat8580]

Interesting and Educational sir.

[@peterlockwood5754]

can someone explain to me why the opening beat slaps so hard

[@EffectiveMuscle]

It's kid kudi day n night

[@1001speedster]

You guys should make a video on Mazda's new HCCI SKYACTIVE X engine and animate how it works.

[@andreiaudio]

Very interresting and helpfull. Thank you!

[@bikashburnwal2029]

Really helpful

[@sandyshow29]

Can't we cover the engine with mesh type which has Holes to pass air and protect from bird strike??🎾

[@leeleslie6615]

i think this will decrease the air flow and change the direction of air . and if a bird is sucked by engine, it will stay at mesh, the air flow will decrease more. i just guess,and my english is not good ,hope you could understand what i mean.

[@HieronymousLex]

@@leeleslie6615 yes you’re right, a screen would create turbulence in the intake flow, and if a bird struck the screen it would just break it and send it into the engine, causing a bigger issue

[@mysock351C]

I think eating a 10 lb. bird will do a bit more than just disrupt the airflow. They can eat hail and what not, but large birds usually do some damage.

[@reclusepilgrim]

Thank you for another great video.

[@rakeshkumarsharma5037]

Nice explanation 👍👍

[@timothyjohnreyes4744]

Did you know that planes can fly with only 1 engine? But if a small large group of birds hit a plane engine the engine will not explode or a stall, small birds can only damage a plane engine in 5% so the engine could not fail so fast.

[@shabeebva123]

Very good information

[@confirmhandle]

Can they add one more set of blades to reassemble the birds after they go through the engine?