I Just Broke My Airplane Wing Spar - What I Learned | Scrappy #47

1 Mai 2021
221 629 Aufrufe

I put my wing spar design to the test. After designing and extruding my own custom aluminum, I finally get to test it...to the breaking point. Watch as I put all the engineering to the test!
You can purchase some of the Scrappy wing spar samples here:
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  • Really enjoy watching. Spent my life as a software guy, wish I’d have gone the engineer route after watching this. Can’t wait to see the wing to see how close you are to my idea of making the top of the wing like a big slat changing the curve of the wing as aoa changes to create more lift at lower speeds.

    Scott LutherScott LutherVor 23 Minuten
  • I think that the aerodynamic force which acts directly on the wing is the lift and it is considered as a distributed load and not a point load applied to the end of the wing and this lift is maximum on the wing root side

    imine bachirimine bachirVor 2 Tage
  • What is the weight difference between the new spar and original Cub spar?

    Christian CattellChristian CattellVor 2 Tage
  • Haha, you'll have enough endurance to fly to Bush Flyers Down Under mate!!!!

    Stuart HutchisonStuart HutchisonVor 2 Tage
  • My brain exploded at "9 and 15 16ths". Ever thankful I was born and raised after the changeover to metric!

    Rob RoyRob RoyVor 2 Tage
  • I am a bit disappointed. Do yoy only answer people who completely agree with your every move and construction?

    cmibmcmibmVor 3 Tage
  • Never ordered something so fast! Do you know when theyll ship Mike? So excited to put them in my aerospace shadowbox!

    Aeryk HurleyAeryk HurleyVor 3 Tage
  • Just bought our Scrappy spar pieces to add to our aviation history collection. So excited to add them to or collection as the first GA pieces. Love your videos and can't wait to see Scrappy at an airshow sometime in the future. Welp gotta get clocked in, MESA aircraft ain't gonna wait... "Lets get to Work!".

    Gregory JacksonGregory JacksonVor 3 Tage
  • wouldn't be more realistic to flex it below the level to cause damage for a while before the test. Aluminum is work hardened so working it a little may change the result and that would match the real world more closely.

    Pixie JisimPixie JisimVor 3 Tage
  • FEA Analysis ATM Machine ... eye twitches o_O O_O o_O O_O

    Will-WWill-WVor 4 Tage
  • Does the simulated additional ribs from the previous demonstration not invalidate the data slightly? Since it became clear from the demonstration of the cub main spa that the additional ribs helped it last longer. That being said even if you take into account the 20%ish gain on the cub main spa, and theorise the same increase in strength with the scrappy spa, your still well in excess of your required number.

    MrJaiimezMrJaiimezVor 4 Tage
  • HEY MIKE sorry i'm late. can you tell me what that chain come-along is? I need one for work.

    stronkdestronkdeVor 4 Tage
  • Awesome

    Zach AZach AVor 4 Tage
  • Once again showing hard work isnt work when you love it.

    Curt SCurt SVor 4 Tage
  • Another awesome video! My son got me hooked on watching your videos. He is taking Mechanics of Materials next semester and I told him I didn’t like the class when I took it many moons ago. We never did any kind of real test like this in school. I would have paid more attention if we had. Keep up the great work! BTW, just ordered the spar set. Glad you still had some.

    Bryan BurrisBryan BurrisVor 4 Tage
  • Mike is like an X men a real Super Man ! Most Excellent ! Wait. Wait. Edit. IRON MAN ! ... Yeah . IRON MIKE !

    todd prifogletodd prifogleVor 5 Tage
  • Of all the appropriate applications, why are you NOT using a carbonfiber spar in the aircraft

    Steven KaySteven KayVor 5 Tage
  • what's the load factor going to be? I know this is not an acro cub, but wouldn't you would want to be able to survive at least 4 G's?

    Quicksilver Flying ChannelQuicksilver Flying ChannelVor 5 Tage
  • I’m curious to see a spar splice repair tested in your fixture. I doubt the repair itself wouldn’t fail but would the ends of the repair create a stress point.. Your test also has me thinking about fully built wings, fabric vs aluminum, since fabric has no compression strength. 🤔

    Casey MannersCasey MannersVor 5 Tage
  • You're having way too much fun with this but I have to wonder since your spar is thicker doesn't that change your chord line and when you need to make your wings thicker I mean I don't know how to explain this

    John HoonJohn HoonVor 5 Tage
  • I miss Draco but Scrappy looks incredible!!!!

    Jason LooseJason LooseVor 5 Tage
  • Hey love your videos. Why aren’t you using carbon fiber for your wing spares?

    1PhoenixRider1PhoenixRiderVor 5 Tage
  • Hi Mike, I want a set of those and I really want a rc draco model... that thing is awesome!!! How do I get a hold of you?

    Greg AGreg AVor 5 Tage
  • There’s a point where we should have stopped and we’ve clearly passed it, but let’s keep going and see what happens.

    CesotoseotCesotoseotVor 5 Tage
  • i loved watching you fly the draco sorry about your loss and glad your ok,you are so positive,ive been into rc flying for several years and i kinda hit a brick wall with money but im trying to get one of your dracos from horizon hobbie it is so awesome to watch it fly its like the draco still lives,cant wait to see you fly srappy man your awesome safe fying, one of your many fans roddy

    Rodney LesterRodney LesterVor 5 Tage
  • Darn it,use metric. Hireoglyphics are for animals!

    Bengt RiiseBengt RiiseVor 5 Tage
  • Great exercise but I was hollering, “BUCKLING” every time he said “kinked” or “blowout.” Consider Euler’s work on relatively long/thin columns, a wing spar and the bracing with ribs certainly a good illustration of the concept. Thanks Mike for sharing such a cool test. Fly safe!

    William LeeWilliam LeeVor 5 Tage
  • Pretty sure every time he sends off for something it costs more than he expects, but as long as he’s not trying to make a profit, who cares!

    Ross LeavittRoss LeavittVor 5 Tage
  • Glad you did the spar samples. Was thinking the whole video i would like to have a signed piece from them. Thanks for making the videos! Always enjoy your thought process on builds!!

    D LayneD LayneVor 6 Tage
  • What I love the most in your videos is the kindred spirit in building what you design. A real Maker or Creator if you please. Keep it up Brother. God Bless you as well. Draco was a real monster of an airplane and Scrappy is just plain insane. Thanks for the fun.

    F. HuffF. HuffVor 6 Tage
  • Great work

    Skip GetelmanSkip GetelmanVor 6 Tage
  • probably gonna wanna increase the size and amount of fasteners at the wing root's. common problem with ag plane's. when ever adding extension's more horsepower, or bigger hopper, but even after making the needed modifications a shitty pilot will still have cracks in no time from overloading the wings lol

    Steven ChaffeeSteven ChaffeeVor 6 Tage
  • Get Jonas Marcinko to be your test pilot. He's a gamer.

    Steve TSteve TVor 6 Tage
  • Boom.... I don't fly... but I'M IN

    LanceCampeauLanceCampeauVor 6 Tage
  • Well, both of my boys are about to grow up and leave... Do you need a foster home??

    Shafford HendersonShafford HendersonVor 6 Tage
  • What winch are you using for testing? Me: Well, of course I need to test everything now.

    John CoxJohn CoxVor 6 Tage
  • GREAT video!

    Patrick MurphyPatrick MurphyVor 6 Tage
  • Mike plans on smuggling gold bars🤣🤣

    this christhis chrisVor 6 Tage
  • I have a brick layer in Guatemala who would like to get in touch about sourcing vehicles for his brick deliveries

    Charles BallietCharles BallietVor 6 Tage
  • Hey Mike, I'm curious why you're using aluminum I-beam spars instead of carbon tubes?

    Mac ShawMac ShawVor 6 Tage
  • How much money are we into a billion yet? You could have built a 747 by now LOL.

    Ray MillerRay MillerVor 7 Tage
  • I love failure analysis!

    ken cohagenken cohagenVor 7 Tage
  • Amazing!!!!!!!

    Patrick StevensPatrick StevensVor 7 Tage
  • Great to see real world testing!!!!!!!Thank You!!!!!!!! I love your ingenuity!!!!!!!!

    Patrick StevensPatrick StevensVor 7 Tage
  • You could charge 75 easy... I studied biz so

    Asa LeightonAsa LeightonVor 7 Tage
  • Not a twin spar wing and if not why not ????

    Oh wellOh wellVor 7 Tage
  • I feel your test was an awesome way of testing but would there be a significant difference considering the strut is pulling on the spar. I do not know how the strut is connected to disperse the load on the spar vs. the pressure point in the test and would that affect the outcome? Thank you for making me think outside the box.

    1DIYGuy1DIYGuyVor 7 Tage
  • Scrappy twin blows engine og scrappy says hop on ill give yah a piggy back ride no need to leave the cargo behind

    Kraig DuncanKraig DuncanVor 7 Tage
  • Would the numbers be different when climbing or diving‽

    tim diguistinitim diguistiniVor 7 Tage
  • I'm not gay but will you marry me?

    Paul SchuylerPaul SchuylerVor 7 Tage
  • Fun experiment watching those results. Here’s an option for that 3,000 pounds. You flew search and rescue to help people, put a tank on the belly and fight fires. 😊

    David MendoncaDavid MendoncaVor 7 Tage
  • You want excitement? Try a hydraulic press to failure on concrete.

    Mike SchwabMike SchwabVor 7 Tage
  • Toss in some lead or gold ingots, you'll hit your maximum.

    Mike SchwabMike SchwabVor 7 Tage
  • WOW!!!! I am no engineer and am struggling to get my ground school started but I have learned so much from you. I love your content!!! THANKS

    Frank LeonardFrank LeonardVor 7 Tage
  • You are brain food, delicious brain food. Thanks. Peace.

    Pablo MeelarPablo MeelarVor 7 Tage
  • Like the idea for the waste spars, that's actually pretty cool

    Captain DanielCaptain DanielVor 8 Tage
  • Last rib was fouling on the wall about halfway towards the target. Effectively shortening the spar by at least a 3rd.

    hoahhoahVor 8 Tage
  • Lol at these kooky backcountry measurements. Seven and five eighths? Get real

    hoahhoahVor 8 Tage
  • Mike awesome stuff and great plane builds, I love what you do! I think it is time to change "Scrappy"'s name. "New" custom built spars are so far away from "scrap" and all the custom made "new" carbon fiber parts have wandered so far away from the "scrap" budget build idea, the full Garmin avionics suite of avionics. This plane is awesome and while I didn't think there would be anything that could rival Draco for an over the top bush pane this one will. The cub-esque look, the crazy propeller, the 8 cylinder engine. OMG this is every back country flyers dream plane they didn't have the ability to to even dream it's so far outside the box. Keep up the forefront aircraft design and building... but can we call it somethimg more in line with what it is? This is by no means "scrappy" we should call it something like "Polished" "Scamp" "Goliath."

    Great Michigan Bush Co.Great Michigan Bush Co.Vor 8 Tage
  • I am so grateful you post these on your channel. Thank you for sharing them. I haven't finished this one yet but as soon as you said you increased the width of the spar, I thought that might be an issue that would weaken the spar and take a great amount of thickness increase to take the load. Finishing the video now to see how right or wrong I am....Thanks again. LOL I love the fact that you bought 30....you are an absolute test maniac...LOVE IT!...and humbled to be way wrong...thanks for the education

    Eric HartEric HartVor 8 Tage
  • I just want to tell you how much I enjoy your videos. I learned to fly when I was 12 on my grand dads 46 Stinson voyager and took my solo on my 16th in that same plane (1986), we flew that old bird all over the country until 1997-ish when he had to sell it due to his failing health. I continued to fly (rentals and friends planes) until 2004 when I lost my medical (sad day for me) any way, I recently started flying model planes and it has brought back some of the joy i used to have flying the real thing. I just wanted to share a little of myself and tell you how inspiring your videos are, so much so that my daughter is now talking about wanting to learn to fly and getting her pilots license when she turns 16 (in 4 years) we even opened a savings account for her to save up for flying school. She goes out with me every weekend to fly model planes and is completely hooked, I can't wait to get her in the cockpit of the real thing. Keep up the great work.

    Russ MontgomeryRuss MontgomeryVor 8 Tage
  • There's a wing design I've been playing with for some time now I just figured it out. I'd like to introduce it to you and see what you think about it very interesting idea. It has to do with changing the airflow in the front of the wing to make the air go faster over the top. it's a very simple simple design. I would love to talk to you about that and see if it can help you in any way shape or form. She wish to communicate with me send me a message and an email and I will immediately send you my phone number and we can talk on the phone. Love watching your stuff you do the right stuff the right way. This is how I want to build my design as well.

    Sm bSm bVor 8 Tage
  • @MikePatey, copy the wing tip of the A-10 Warthog, increased ‘ground-effect’ during landing.

    cardonescarlsoncardonescarlsonVor 8 Tage
  • Just a bad design to start with I think why not use a wing tube or carbon fiber or both ? But I'm sure a lot of people know what type of planes I build

    LazyPilot99 GamingLazyPilot99 GamingVor 8 Tage
  • This episode is most excellent !

    todd prifogletodd prifogleVor 8 Tage
  • Can’t wait to get my scrappy spars.

    Joseph PlummerJoseph PlummerVor 8 Tage
  • In the last test for the Scrappy wing spar, it looked like the far end of the spar was up against the wall? Might be why the spar bent so close to the fulcrum point.

    hhgttghhgttgVor 8 Tage
  • Well at least you didn't get your anchor scratched.

    Fred FlintstoneFred FlintstoneVor 8 Tage
  • Tonight he celebrates the wings he's going to have by eating wings with the boys

    BRS RCBRS RCVor 8 Tage
    • DA BOIS

      CesotoseotCesotoseotVor 5 Tage
  • It’s like he’s talking to a kindergarten class

    Joel SperzagniJoel SperzagniVor 8 Tage
  • Wow what a pay load, great work , yea Scrappy wings . thanks , .

    Charles StoreyCharles StoreyVor 8 Tage
  • Hi Mike, first off I LOVE your stuff! You are a natural educator & I’m so grateful you have taken the time to share your builds with the world! I’m no engineer but it occurs to me that Scrappy’s wing is going to be high lift & high drag & I was wondering if you have considered using “Maule’s” technique for using minus 5 degrees (I think it is) on the flap setting to dump some lift & drag for a faster cruise? Keep up the GREAT work!

    Gary SGary SVor 8 Tage
  • Can mild heat treating and or annealing help with a better load rating.....just an idea

    Erin boat guyErin boat guyVor 8 Tage
  • I would change comercial aviation for this in a blink of an eye! You do an amazing job, the job of my dreams!

    Sebastian RodriguezSebastian RodriguezVor 8 Tage
  • With that capacity, you could sling a couple AIM-9 sidewinders under there ;))

    Anthony OveringAnthony OveringVor 8 Tage
  • BUT.. Will it do LooptyHoops? haha

    Leda MayLeda MayVor 9 Tage
  • BAD ASS!

    Leda MayLeda MayVor 9 Tage
  • Why not a carbon Spar or carbon wrapped ?

    Lead SledLead SledVor 9 Tage
  • I watch this at least 3or4 times.....and I Like to review Graco one through scrappy 50 it’s like déjà vu all over again

    John FossettJohn FossettVor 9 Tage
  • As an amateur engineer, I geeked out so hard on this video. I feel we both shared the same level of morale and motivation watching this. You're the Elon of the sky, keep on keeping on 💪

    Chalmich5Chalmich5Vor 9 Tage
  • Beautiful piece of work - you had me when you said FEA and SolidWorks... just curious how you evaluate the extrusion metallurgy for spars - i.e., what tests does the extruder (or you) perform to ensure consistency of the metallurgy along the length? Other thoughts (I was in new product development for 40 years as engineer/manager/director/GM) include how many test samples are enough when your life depends upon it? I am not nitpicking, just love watching and hearing how you apply engineering to the design of your aircraft. Thanks, Bob.

    B H K7 AZB H K7 AZVor 9 Tage
  • Is that a Celestron NexStar telescope in the back room when you are showing off the anodized spars?

    Scott McLainScott McLainVor 9 Tage
  • 4:30. That Bell behind you is gorgeous. I love vertical flight more than anything in the world.

    Chloe HennesseyChloe HennesseyVor 9 Tage
  • Wings , yes finally , wings!

    Kevin GaudonKevin GaudonVor 9 Tage
  • When the spar doesn't return to zero is that because it's started to yield? When it starts to kink out of the plane would that be "column buckling"? Congrats Mike on your successful spar design!

    Keith CressKeith CressVor 9 Tage
  • o with such a strong spar why not go strut-less?

    eric hensleeeric hensleeVor 9 Tage
  • Hey Mike. I have followed this project and I am deeply impressed. The body work you are making is exquisit. OK, you have obtained the desired result of relative strength - and that may be good enough for your purpose. But it seems to me that something is wrong. There are so many considerations behind this that I don't know of, so I may be completely out of line. But in my world it should be possible to bend such a spar/beam to a significant permanent deformation WITHOUT having a fatal fault. So it seems to me that the profile is less than optimal. I would consider widening the flanges up to a size where they do not collapse. This will add some weight that can be removed by drilling some fairly big holes in the body of the profile ( and by having fewer ribs). Further I wonder why you are only talking about static forces. Even a plane like Scrappy can encounter severe turbulence, resulting in 3-4 G's. None of my business - I am not going to fly with you - but I felt a need to share these thoughts with you.

    cmibmcmibmVor 9 Tage
  • Ever tought of a titanium spar? like the F14 had a titanium wingbox, that thing was indestructible

    911s73targa911s73targaVor 9 Tage
  • Mike, you're a total Geek (i mean that in a good way)

    911s73targa911s73targaVor 9 Tage
  • SI units make a whole lot more sense.

    David EwingDavid EwingVor 9 Tage
  • I really think this is my favorite episode yet. I love watching the testing and explaining of Scrappys parts. All of Scrapoys strength is great but it's gonna cost some money. I wonder what scrappy final cost will be?

    1978grizz1978grizzVor 9 Tage
  • any different results if you used a doubler with more bolts as would be in a real spar and strut attach point ? the high point load on the test rig might lower the yield value ?

    Peter FoxPeter FoxVor 9 Tage
  • Hi you can add small wings on the top of the weels just like a mudguard,be sure it's work ,saadeq from iran .góodluck.

    sadeq rafeapoursadeq rafeapourVor 9 Tage
  • Mike You are Sooo Cool! So Close ro Perfection! So Fun to Watch your channel. Love your idea with the Scrap pieces and Absolutely Love that Orange Scrappy Cut out! Can't wait to see those Wings! Not a Pilot but a Huge fan!

    yellowmustangloveryellowmustangloverVor 9 Tage
  • What a great day for you Mike! Fantastic results!! Congratulations, my friend!👍🏻🥃

    Michael CzetyrbokMichael CzetyrbokVor 9 Tage
  • I really dig the Happy Go Lucky/party time/let's have fun and get to work Mike Patey, but the Serious Engineer Mike Patey in this video @ 6:28 got My attention. That is the "This Ish could kill You if done all wrong" kinda thing that makes Me pay attention. I can't wait till Scrappy is airborne. (buying a Scrappy shirt and sticker now).

    Brian FussellBrian FussellVor 9 Tage
  • Awesome. Simply Awesome.

    Doug BourdoDoug BourdoVor 9 Tage
  • Are you saying the scientists and engineers know what they're talking about??! Who knew! lol. :)

    Matthew PratherMatthew PratherVor 9 Tage
  • Myth Busters aviation style. The Patey effect

    Daniel Av8torDaniel Av8torVor 9 Tage
  • Please build a space skimming rocket ship

    ChaosTVAfricaChaosTVAfricaVor 9 Tage