Video from the Past [19] - Airscrew Manufacturing (1940)

[@timrussell1559]

Truly incredible precision and accuracy in a time that was long before computerized milling machines and measuring devices. Also, the level of highly skilled craftsman is amazing. If not for this high degree of innovation and precision - winning the war would not have been possible

[@alexcallawau7586]

It’s crazy the amount of qc checks and balances were made on every single blade. Especially with the mass production and time crunch during the war. Obviously it’s something that was extremely necessary but it’s just amazing to me. If I was an airman back in the day and knew how much care these workers put into their work I’d feel pretty secure, At least secure about the quality of the aircraft.

[@jonnymimn3009]

This film was so informative, very fascinating for work completed over 70 years ago.

[@SquillyMon]

My 4th time watching this...and I am still watching transfixed, like I've never seen it before. Absolutely fantastic attention to detail and machine skills here...

[@SquillyMon]

I would like to shake the hand of the machinist who fabricated those beautiful components. Ive always known that there was a lot going on with an adjustable prop...but just how much and its complexity I was not aware of...this is absolutely amazing.

[@copee2960]

pip pip well said.

[@SquillyMon]

I watched this again... and sat here 100% transfixed, absolutely incredible engineering and skill.

[@ericnickel3280]

Remember no CNC back then. All manual machines. Yes there were patterns to follow but still had to set it up and a lot of hand finishing. True craftsmen.

[@julianneale6128]

Everything from the beautiful design to fabrication and superb bold quality. Absolutely incredible engineering!

[@williamnichols2067]

Its amazing how informative and "down to earth" these old technical videos are. I don't know if its because the tech is older, therefore easier to understand? Or perhaps they could just explain how things worked better back then?

[@jacobjohnson3200]

I think it's that information and entertainment can be orthogonal, at least for some people. Meaning, while a few of us can nerd out on dry technical info, others need 'drama' to maintain interest.

[@axipixel5811]

Today's educational materials are focused on technical jargon. Memorizing key words and the most complicated, specific and absolutely pedantically correct way of doing things. Expecting you to self-study and analyse the text fully. Leaving nothing to the imagination and using near legalese. Additionally, content that isn't in depth is often pampering, lacking substance just teaching trivia, and focusing on grabbing attention. In the past, we obviously knew less and education was far more basic. They had to figure out how to explain these advanced concepts to people who by today's standards would be functionally illiterate, and do so well rather than entertain with factoids. Simplicity and pure understandably was paramount. Good elegant analogies were valued. Avoiding jargon and using common language was important. In practice, education has taken the wrong turn, as the latter can teach you more faster, with it remaining more permanent in the mind aswell. Weeelll really just the books movies and such used. The actual way schools were run was absolutely awful.

[@michaelwills1926]

I believe this is what they call “trusting your audience” and yes it’s sorely missing today.

[@emersonguimaraes8811]

The test of balancing it's amazing.

[@jaminova_1969]

The animation is great as well!

[@Copainization]

He almost scraped the training edge @18:23 / 20:59. A slow let down. Just smooth as butter.

[@jackgranzow126]

I don't know why I was fascinated. There are so many things that kids will have to rediscover.

[@juanasanelli6831]

Vaya mi agradecimiento a la persona que subio esta pelicula la vi cuando tenia 13 años ! y ya tengo casi 70

[@TheGeezzer]

A piece of card weighing about 5 grams is enough to rotate or offset the balance of a complete 600lb propellor 19:05 now that's what I call finely balanced!

[@bobgreene2892]

Truly amazing-- the entire process from rough forgings (checking for grain) to final balance.

[@nickjaxe]

Fascinating...dark workplace...how did the see what they were doing.

[@donaldparlettjr3295]

And to think this is hand machined there no computer driven machines here use pure craftsmanship

[@100W-z2c]

how did they do dynamic balancing? They only showed static balancing which isn't enough to prevent vibrations.

[@m4chinist_]

Technology that inspires

[@nejsig]

De Havilland propellers, DH Flamingo aircraft . Nice video, thanks!

[@copee2960]

you've answered my question concerning the type of aircraft thank you.

[@wilburfinnigan2142]

De Havilland props were licensed produced Hamilton Standard from the USA !!!!

[@iran.elevatorhydroalic]

Wow Very incredible film

[@marknelson5929]

Come to think of it, they are true pieces of sculpture, massed produced at that.

[@hanziwatdan5373]

Respect for craftsman

[@popps2502]

Wow I've always Wonder how this was done and works very informed video.

[@rockstar-en7hf]

Great Engineering 👌👌👌

[@superfuntime3107]

0:57 What are the lightning looking high voltage trails on the right all about ?

[@funnyrabbitflyer6855]

Super Fun Time It's reflection of the light source, from the curved surface of the propeller blades. There are 3 squiggles that repeat.

[@buikpluis]

How were the oil-hoses connected to the rotating airscrew?

[@causewaykayak]

coaxial feed. About 5.00 into this maintenance video you can see engineers prepping the shaft and oul seals ... Good question! kzbin.info/www/bejne/nKemnoR3mtmsl8k

[@billbright1755]

Low pitch more power High pitch more speed First gear more power Third gear more speed An air screw is a specialized wing.

[@scottpecora371]

This was 1940. Although the Weights flew in 1903 officially aircraft really didn't become remotely viable until the start of WWI, in 1914. So this was only 26 years later and the level of machining and fabrication necessary had already reached this point.

[@ZerokillerOppel1]

Very interesting!!

[@ZerokillerOppel1]

At 20:25 all this high tech stuff and the mechanics have stand on this....

[@clausrnfeldtwillemoes7381]

well.... it works

[@areyouavinalaff]

but it's dimensions are exact to within microns.

[@trufix72]

no safety glasses are required

[@Maadhawk]

Did they even have safety glasses in 1940? Did suitable materials for such things even exist?

[@grasshoppers7742]

Windows 10 and iOS not required either to get great graphics.

[@9traktor]

Superb!

[@perceive8159]

How many machines and trades people to make a blade! Today, 1 good quality five axis machine , one programmer, one operator makes it all! Do you think that’s good or disappointing?😎

[@lesterbeedell9725]

They ceased to call them Airscrews because of the chance of confusion with Air Crew, it was propellers from then on

[@spiritbuu]

Back when production workers dressed like today’s executives 🤣

[@joeconrad3828]

A man who combs his hair, shaves, and puts on a shirt and tie to work on an assembly line is certainly going to take pride in his work.

[@dr7584]

Fascinating, sculpting to precise specifications.. Unbelievable safety violations, though.

[@tomkent4656]

Long before Health and Safety was invented!

[@TheGrumpyEnglishman]

If you ignore the Factories Act of 1937.

[@tomkent4656]

@@TheGrumpyEnglishman Which a lot of companies did!

[@copee2960]

it makes you wonder if we could rise to the challenge today, how much craftmenship as been lost?

[@williamkoppos7039]

Beautifully made and polished....then they sandblast them? Is all that polishing really necessary?

[@bobgreene2892]

That was done to prevent "dazzle" which might disorient the pilot, according to the film. However, like you, I also wondered whether merely applying dye to the metal might achieve the same effect as paint, but with greater durability.

[@MosaPura]

blasting induces a pulling tension in the surface layer which prevents micro-cracks to occur and cracks due to fatigue

[@marvinblankinchip2535]

All of this without CNC Machining or computers for that matter.

[@jamesb.9155]

So much hand work which seems so tedious and laborious compared to today's precision milling machines and computer operated processes...

[@jamesb.9155]

@@bigboreracing356 Supposition.

[@jamesb.9155]

@@bigboreracing356 You can go on and believe whatever irrelevance strikes your own fancy!

[@jamesb.9155]

@@bigboreracing356 Well then, your 'truth' is naught but waste . . .

[@jamesb.9155]

@@bigboreracing356 Bollocks, Mate... Tata....

[@aw448]

And then some pilot has a blade strike or forgets to put the landing gear down and its all for not.

[@timmayer8723]

No way would I wear a neck tie while running a lathe or any tool that spins at high speed.

[@popps2502]

Yea good ideal!

[@bazza945]

No safety glasses!?

[@timmayer8723]

War manufacturing reveals many things that can be used by civilians, just not in the same way.

[@ivoryjohnson4662]

PPE wasn't an issue back then

[@Mishn0]

Then get in your OSHA powered time machine and go back and tell them. Yours was a vacuous comment.

[@ivoryjohnson4662]

vacuous....maybe the injuries the folks that suffered injuries off the field of battle helped us have better quality of life now didn't mean to put a burr under your saddle

[@Mishn0]

vacuous, as in not containing any information of value, waste of space and electrons. Of course they don't have PPE, it's 1940. They probably all smoked too.

[@ivoryjohnson4662]

I noticed a few did Just glad we don't have that work environment now at least in my part of the world

[@dbaider9467]

They had films to help you with that back then too!: www.shutterstock.com/video/clip-4829333-stock-footage--s-silent-footage-shows-the-administration-of-first-aid-for-eye-injuries-in.html

[@collin6238]

the prop was more beautiful than the plane they put it on

[@phineascampbell3103]

3:26 , lol it's drawing a .,.. well, never mind ...!!

[@craigpennington1251]

That was when you couldn't show up for work crap faced or stoned. Another amazing video of learning. Thank you. Yep, Jerry would like to have bombed that factory and thank God they didn't.

[@rrhone]

Or if you did use something, you did it responsibly and no one else knew about it. lol

[@savorine8877]

Oscha will close these factories immediately in today's standards. No Safety goggles, Hand guards, lose cloths, no masks..I think without Oscha world wars can be won.

[@MrShobar]

The static balancing shown here is not sufficient to assure proper balance under dynamic conditions.

[@A_Man_In_His_Van]

Well it was good enough for every aircraft in ww2 so... I think it was ok.

[@MrShobar]

It was not done this way for "every aircraft in ww2...". Only dynamic balancing can lead to the cancellation of the undesired products of inertia.

[@estebahnrandolph8724]

I believe the horse power on all these engines were over rated . They were not sustain 2000 hp or 1500 hp .

[@southjerseysound7340]

You are wrong

[@BigEightiesNewWave]

I thought it was about superchargers 🤣 They are air compressor screws , esp. Whipples 😁

[@miksal26]

The narrator sounds suspiciously like James Robertson Justice

[@tocaat2410]

As in: "you! what's the bleeding time?" (kzbin.info/www/bejne/pYe6m3SbdsZoaNE)? I think you're right.

[@ericwilliams2122]

great scott man!!!

[@physicaldetails8492]

1940

[@jimraq1]

No safety glasses no hearing protection, god we’re wusses now. Bunch of pink girls blouses. Whaat. Whaat was that?

[@goof8372]

Right! Metal flakes flying around everywhere and no safety glasses. Steel toed boots probably never even heard of!? OSHA where were you for this one?

[@อ่องโพ่ปะโอเป้]

ชอปมากฯเปนพิเษศเลย

[@jimc4731]

Too bad the narration was unintelligible! JIM

[@philup4947]

No it was not

[@javiergilvidal1558]

Try learning to read and write!

[@jimc4731]

@@philup4947 Too bad the narration was intelligible

[@philup4947]

@@jimc4731 So you could understand it then so why the first remark?

[@rriquelmy3522]

Terrible audio