Boeing YL-15 - Defying Physics

Рет қаралды 288,844

6 жыл бұрын

Boeing built two XL-15s as proof of concept prototypes and then 10 YL-15s for evaluation as they competed for the U.S. Army Air Forces (which quickly became the U.S. Air Force) contract for a new L-bird, a liaison aircraft. Boeing ultimately lost the contract to Cessna who had developed the L-19 Bird Dog. The L-15, the last manned piston-powered airplane Boeing ever built, never went into production.

Пікірлер: 250

@coltons4436 6 жыл бұрын

I met and talked with this man for nearly an hour . He did an absolutely fantastic job on the restoration and couldn't be a nicer person

@Rickster5176 6 жыл бұрын

Clever design! It doesn't defy physics, it efficiently uses physics. This design has some real merit.

@amsterdamgeorge2 6 жыл бұрын

Amazing. As an aviation buff, I want to thank you from the bottom of my heart for not only restoring the plane but for sharing your amazing story with us as well.

@jsfbr 6 жыл бұрын

(1) Beautiful plane. It seems to deliver lots of joy flying it. (2) Change the video's title. It dishonors the presentation.

@deezynar 6 жыл бұрын

The video said nothing about its performance. What was its intended purpose? What is its max. speed? What is it's min. air speed? Max. climb rate? Ceiling altitude? What is its min. takeoff distance at 0 MPH wind? What is its min. landing distance at 0 mph wind? What is its fuel consumption? Max. range?

@yetidynamics 6 жыл бұрын

apparently "goofy looking" and "defies physics" means the same thing now

@cyborgbadger1015 6 жыл бұрын

yes its a strange dumbed down world we live in. At one time every schoolboy knew you couldn't actually defy physics.

@eltouristoduo 6 жыл бұрын

yeah immediately had the same thought about the crappy wording. Obviously it's not defying physics, especially if it flies decently, which it probably does.

@mattclaus7690 6 жыл бұрын

I was waiting for him to explain what it was designed for. Obviously some sort of observation because of the rear facing seat but, given it's design it was intended for a very specific job but what?

@UncleKennysPlace 5 жыл бұрын

Well, you can defy physics all that you want, but physics will win, every time.

@chaosopher23 6 жыл бұрын

Interesting aircraft, but no explanation as to how or why it defies physics.

@NoStepOnJake 6 жыл бұрын

Dalek Anonymous thanks for saving me the time

@gordowg1wg145 6 жыл бұрын

Exactly, great viewing platform!

@cluelessbeekeeping1322 5 жыл бұрын

I believe he addressed that by simply saying it was hard to get used to the low numbers, meaning stall speed, take off & landing speeds. It's an expression, nothing gets away with physics.

@Wingnut353 3 жыл бұрын

It's an early STOL... that's all.

@GOASTRC 6 жыл бұрын

My hat is off to you for preserving your father's and Boeing's legacy. Am glad there are people like you.

@kraagaard 6 жыл бұрын

Why click-baiting??? The plane and story are interesting enough!

@damham5689 6 жыл бұрын

Someone should make this again as a super stol. I bet it would be a great Backcountry flyer

@birddogaustria2103 4 жыл бұрын

My deepest respect! You did an amazing job in restoration

@Beneduzisantacruz 6 жыл бұрын

This is a national treasure.

@Waveluth 5 жыл бұрын

That’s a great story about your family, your Dad and a wonderful little plane. I love this plane. I never got a chance to see a real one. Thanks very much. Your a lucky guy and we all appreciate what you have done to keep such a rare treasure in the air. ✌🏻PEACE🇺🇸☘️

@sestrelbethesda9450 6 жыл бұрын

What an amazing little aircraft. So glad it is well preserved, a bit of flying history.

@Toolsinaction 6 жыл бұрын

awesome video

@Edyth_Hedd 6 жыл бұрын

That's the coolest plane ever. Love all the glass and the entry to the rear seat.

@kiwirambob 6 жыл бұрын

Wonderful history .. thank you for saving this aircraft

@Paiadakine 6 жыл бұрын

Beautiful. Thanks for sharing and thanks for restoring the plane

@brewplanes7021 6 жыл бұрын

Pay Way your welcome.

@terriecotham1567 6 жыл бұрын

Thanks for posting It's nice to see history from the early days of the world to aircraft like you have and taking the time to rebuild it was a God sent in a way for kids to grandparents love things like this and thanks for all your work and time and you right your dad had to lay down a lot in those days but he had a gem. I like the 30 mph or Knots stall speed

@j.mangum7652 6 жыл бұрын

Despite the clickbait, what a cool little airplane.

@UTubeGlennAR 6 жыл бұрын

Lovely Craft, Congradulations. Sure glad you and your Dad, gave it the loving home it deserved......

@gvukster 6 жыл бұрын

beautiful story and plane; I'm sure your dad was a great man. blessings from Hamilton Canada

@kd5j 6 жыл бұрын

Awesome! Thanks for for the video, I never knew a surviving example was still flying!

@G777GUN 6 жыл бұрын

Clever design. I could still see this plane being useful for search operations.

@thefpvlife7785 6 жыл бұрын

Thank you sir for saving this treasure and aviation history.

@patrickmckeown3683 6 жыл бұрын

Beautiful video! Job well done.

@williameudy633 6 жыл бұрын

A treasure, indeed and beautifully restored.

@qbee42 6 жыл бұрын

Nice aircraft and video, misleading title. I expect better from EAA.

@pascalchauvet4230 6 жыл бұрын

Wonderful video

@leegenix 6 жыл бұрын

The title is misleading. These aircraft were near the EXPERIMENTAL stage. This happens all the time when contracts fail.

@pascalchauvet4230 6 жыл бұрын

Awesome video

@sabeillard 6 жыл бұрын

Great video, awesome aircraft! Congrats from Portugal, Sam

@DaveLife1 6 жыл бұрын

Great vid. Wonderful spirit

@ben3989 6 жыл бұрын

Looks like it follows all the usual laws of physics. Did I miss something?

@Failincorporations 6 жыл бұрын

I guess...

@texasl-19birddogjimmiles34 5 жыл бұрын

I got to meet these folks at Oshkosh this year (2018) and I must say they are fantastic people. They had their travel trailer close to ours in war bird camping and had the pleasure of having dinner and breakfast with them. I wish them safe travels.

@bobeden5027 6 жыл бұрын

An amazing fit for purpose vehicle, so elegant!

@texasl-19birddogjimmiles34 6 жыл бұрын

I saw this bird briefly in 2016 if I remember correctly and I hope it will be at Oshkosh this year. Awesome aircraft. Congratulations on such a beautiful restoration.

@jamesh5187 6 жыл бұрын

Absolutely beautiful plane.

@codybell4110 6 жыл бұрын

Beautiful aircraft would love to get a ride in it. The backwards faced seat in the rear with the nice visibility would be such a treat

@Twister051 6 жыл бұрын

Nice video but it would have been even better if you'd showed the STOL characteristics of the plane. I've read it had incredible STOL performance.

@Irobert1115HD 6 жыл бұрын

thisnplane looks a bit like the fieseler storch and this plane (a smal reconisance craft) was able to fly backwards (it had such a slow stall speed that if you fly against winds that are faster than that speed and stop the engines it would fly backwards.

@jasonlong2145 6 жыл бұрын

Irobert1115HD Yes, and that particular feat of being able to fly backwards, was the same for the Antonov An-2 in certain conditions, if memory serves me correctly... Shame though didn't get to see the STOL performance, or flying backwards😉

@tomklein9937 6 жыл бұрын

ANY plane can “fly backwards” in a fast enough headwind. the wind speed just has to exceed the plane’s air speed.

@Doan84 6 жыл бұрын

it's ugly and beautiful at the same time

@robertschumacher2707 6 жыл бұрын

It has that purely 'Form follows function.' look.

@keithlocke2205 Ай бұрын

Outstanding man! Well done!

@kennedysingh3916 5 жыл бұрын

First I'm seen one or even heard of them, thank you.

@Thunderdog73 6 жыл бұрын

Discovered this type via this video...excellent, although a little more technical info regarding spoilerons and STOL performance would only enhance this great video. Cheers!

@angelaracino6236 6 жыл бұрын

What a great testimony to your father and Boeing, nice video thank you God bless you and your family

@deadendfriends1975 6 жыл бұрын

Never heard of this bird before. Thanks !

@hayden9496 6 жыл бұрын

I'm sure the mention of defying physics was just tongue and cheek. Incredible aircraft

@robfraley4210 6 жыл бұрын

In the early 50’s I remember looking through some of my Dads Older airplane books (he worked at Eastern in MIA) and I Remember Loving THIS airplane...!! 😍❤️😜😏😘

@DJBoysToys 6 жыл бұрын

what a stunning aircraft

@RcBuddy 6 жыл бұрын

Cool story, thanks for sharing.

@tomthompson7400 6 жыл бұрын

stunning

@Ringele5574 6 жыл бұрын

Thanks for saving some of our aviation history.

@DavidAlanArnold 6 жыл бұрын

Wow! Love that.

@hamzalag2006 2 жыл бұрын

Thank you

@colsanjaybajpai5747 10 ай бұрын

Very beautiful plane

@Michael-4 6 жыл бұрын

I don't care about the clickbait. A lovely story.

@dammitol7678 6 жыл бұрын

Good airplane and good memories. I am happy for you.

@kencohagen4967 6 жыл бұрын

I wish someone made kits of these available. It looks like a great STOL aircraft!

@bartgoins1782 6 жыл бұрын

I think I'd be happy with plans. Change things up a bit and put a Corvair engine in it.

@bobmoynes1551 6 жыл бұрын

I believe the word is clickbait, all video's have it. Now does it look like it would fly, it looks like it tried to fly and failed, of course that's on the ground. In the air it is a beautiful example of something fulfilling 100% of it's design, another example would be the A10. You and your father have done an amazing job and deserve 1000 times the credit these trolls are giving you. keep up the good work.

@speedbuggy16v 6 жыл бұрын

neat aircraft, everything you need to fly, and not much else!

@LonMcClure 6 жыл бұрын

A true beauty!

@andrewiida9507 6 жыл бұрын

This thing is rad!

@burtvincent1278 4 жыл бұрын

Beautiful. As short coupled as the gear is I would be prone to ground looping it.

@user-ri5oc5rw5b 6 жыл бұрын

Soooo small but great history of this aircraft

@williamthethespian 6 жыл бұрын

Congratulations.

@occamrules 6 жыл бұрын

I'm curious: which bit of 'physics' do you misunderstand badly enough to think this aircraft is 'defying' it in this video (in which it appears to me to be flying in the way one would expect if it were obeying all the relevant bits)?

@roytee3127 6 жыл бұрын

click bait

@ryc3rz 6 жыл бұрын

Fairydust. It actually flies on fairydust, but they're not allowed to say that straight lest world government would ban them forever. It's all a conspiracy, obviously. Did you REALLY believed that Bernoulli's principle would actually choose to work on something looking like THAT? Some people are so naive...

@NGC1433 6 жыл бұрын

It's obviously too ugly to fly, yet it does...

@dozer1642 6 жыл бұрын

occamrules you might look up the word sarcasm. Also humor.

@occamrules 6 жыл бұрын

+Dozer1642 In light of your comment I'd be tempted to suggest you might look up 'irony', but for the fact it would clearly go straight over your head.

@tomparker9001 2 жыл бұрын

What an elegant little damslefly

@johnthompson6550 6 жыл бұрын

Excellent story,,,,, looks absolutely amazing,,,,,,,,,

@edwardkelly5625 Жыл бұрын

Very awsome bird

@ericheine2414 6 жыл бұрын

Please tell us what is the stall speed? How many feet do you need to land and how many feet do you need to take off. What's its range and top speed? What's the rate of climb? Laden and unladen weight? You know stuff that Airplane freaks like to hear. Thank you. Thanks for taking great care of that plane. Thanks for sharing.

@glenkohler1291 6 жыл бұрын

I happened to look up this airplane while researching other craft and immediately wanted to build a flying RC version of it. (Are any plans available to scale down?) In any case, it is wonderful to know this man is keeping this plane well maintained and flying. It is a true aviation treasure.

@shantz7 6 жыл бұрын

No physics seen nor mentioned in this video. Cool bird though!

@bassmith448bassist5 6 жыл бұрын

Dahlia Ansley OK. We get it!!! The title was a little bit misleading. This was a great video of an aircraft I had never heard of before. Give this poster a break. It's trolls like most in this comments thread that make me happy I don't post!!!!!!!!! Great job dude!!!!!

@beer1for2break3fast4 6 жыл бұрын

Go ahead and post what ever you want. Just don't use click bait titles to get people to watch it.

@BariumCobaltNitrog3n 6 жыл бұрын

Dan Cutler You don't know what a troll is. Trolls are abusive and bully people just to get a reaction, often obscene and threatening violence. Mentioning the title does not describe the content is the mildest form of criticism possible. The title is misleading people into clicking on the video and the poster gets MONEY when that happens. It's not a "little bit misleading" it is nothing BUT misleading. The title is clickbait (misleading or misrepresenting the content of the video to get more views) and is a violation of KZfaq's Terms of Service and the people commenting on that fact are like reporting that someone is stealing from their employer. They are not wrong, defying physics is EXACTLY what it doesn't do. It, in fact, DAN, does not even mention physics except to say it takes off quickly, which only shows the nice man who restored the cool airplane knows NOTHING about physics. You are defending a criminal, great job dude!!!!!! If the title actually stated what was in the video, it would get thousands of more views, for example, One of 12 Rare Aircraft That You Have Never Seen Before! would get people that WANT to see the plane, instead of doubters who reluctantly click on the possibility of physics being defied (like quantum particles do) so ease up there buddy.

@billwessels207 6 жыл бұрын

Flew spotter planes and A1E's in 1968 Vietnam. They were about the same vintage as this one.

@williewideback 6 жыл бұрын

Awesome!!!!

@walterriely4032 6 жыл бұрын

Nicely done, some footage of it's capabilities would have been much better though.

@voodoo1449 6 жыл бұрын

Great plane....awesome back story....what is the rear facing seat for?

@inekemateman273 6 жыл бұрын

Reminds me of the NOTAR system! It is awesome!

@samsungtv4u 6 жыл бұрын

That's a cool plane perfect for sirch and rescue. .360

@ujijin3099 6 жыл бұрын

Oh my goodness LE-432...what a story and what an intergenerational dream made real by labors of love, devotion and sacrifice. If you've no one to pass this gem along to, perhaps the Smithsonian would be a great candidate...? Thanks so much for your vid about this amazing aircraft. Aloha and AGL Forever!...from HNL..

@DasIllu 4 ай бұрын

Boeing Engineer: "We have 4 weeks to build a plane... i know, i know... don't panic, we can start with this concept drawing my son drew yesterday."

@ranger1959ful 5 жыл бұрын

My wife and I have seen your plane at the AirVenture Museum in Oshkosh, WI.

@ralvin9365 6 жыл бұрын

Nice restoration job. The second little wing directly behind the main wing is a curiosity. The ratio of fuselage to wing is unusual. Does the little second wing create even more lift?

@billtev9846 5 жыл бұрын

It's a beauty! Looks easy and cost effective to make, Boeing should re produce them with carbon fiber

@orangelion03 6 жыл бұрын

Fascinating little bird! Google it and you can see photos of it on floats.

@edilbertosantana8307 2 жыл бұрын

Nice design

@naybobdenod 6 жыл бұрын

Good man :)

@paladin0654 6 жыл бұрын

Interesting video and aircraft. Please tell us what you mean by "defying physics".

@cluelessbeekeeping1322 5 жыл бұрын

It's a STOL.

@bluemarshall6180 6 жыл бұрын

Wonderful Airplane Same as the Music. What Title is it... Please????

@SuperHyee 6 жыл бұрын

Hurrah! Hurrah!

@steve1978ger 6 жыл бұрын

cool plane, amazing restauratinon, fine video, couldn't care less about nitpicking the title

@shane142 6 жыл бұрын

Does anyone know if someone come out with a kit-set model of this type of Aircraft or scale drawing to work from to scratch build a model of one????

@crackedemerald4930 6 жыл бұрын

I see what makes it defy physics... It flies!

@adam_mawz_maas 6 жыл бұрын

It's not the last piston-powered manned aircraft Boeing ever built, Boeing wrapped up the (K)C-97 line 10 years after the YL-15 was cancelled and the the B-50 was just entering production as the YL-15 was cancelled. The Boeing Stratocruiser first flew only 5 days before the YL-15 and would be produced until 1950. Also the L-19 was purchased by the US Army in its first fixed wing buy after the USAF became independent, the contract the YL-15 was designed for was an earlier USAAF contract from 1946. The Army did evaluate the YL-15 against the L-19, but that was a later procurement and Boeing was offering it's already developed aircraft against a new Cessna aircraft.

@skipsteel 6 жыл бұрын

If you were a short field Aircraft Pilot you would understand how this aircraft seems to hop off the ground in under a 100 ft with the slightest headwind. It seem's to defy Physics, like that. There explained for those who don't appreciate vintage short field Aircraft performance.

@dmcalut 5 жыл бұрын

I didn't see it taking off and landing, right?

@asafgl4281 6 жыл бұрын

Amazing...looks like a metal dragonfly...

@vw2rover 6 жыл бұрын

Is this a trailer for the full video where he explains the physics part of it?

@tungstenkid2271 6 жыл бұрын

I'm just guessing but I'd think Boeing discontinued it because it only carried one man, was slow and had limited range, so somebody probably said- "Hey we don't need to build so small, we might just as well build something a little bigger to carry an observer crewman, has a higher speed and is longer-ranged."