C-5 Gear Trainer Gear Retraction

[@Themadhatton]

The engineering that went into this is incredible!

[@Bigalinjapan]

Yeah, if there is any way to make things complicated, it will be used...

[@landondyer]

@@Bigalinjapan In some engineering projects, there is always the great peril that they will succeed.

[@matsv201]

@@Bigalinjapan Well.. it could be done with all 4 linkage connections in stead, having no computer. This would be what is usually done with smaller aircraft of that era. In a aircraft this large, the automatic control system would be far lighter than 4 linkage connection, it also make the design more flexible, and to some degree simpler. Its also not that complex, really just using the same gate relays after each other. This was one of the most common way to have automatic system at this era all the way into the late 80-tys. For even more complex system cam axles was usually used. This was typical of washing machines that could do several different programs, having way more flexibility and could do quite advance stuff. But they did have a tendency to break. Prior to that was punsh systems that could be even more complex, and those system is almost 200 years old.

[@Gixer750pilot]

Just watch the Jaguar fighters undercarriage retract it blows my mind

[@CenobiteBeldar]

Really cool! And everything looks so smooth like those wheels on the rail to help the landing gear bend in the door.

[@charlieb3032]

Everything is done with such force and finesse! Beautiful engineering.

[@markusthl]

Such force, many finesse 😮🦊

[@philliplarson2908]

Got my 7 level on Fred. I don't remember this trainer, but did have fun learning hydraulic troubleshooting on gears and doors at Travis. I remember C-17 school at Charleston and McCord had similar nice trainers.

[@AugustusTitus]

That is a mechanical work of art.

[@vietnamveteran8869]

I remember they had this at my tech training at Sheppard AFB in my C-130 training in 1970.

[@obsoleteprofessor2034]

I trained on H-3's and 53's at Sheppard in 1979. Honestly, waaay too fast and learned the real stuff at my duty station under seasoned mechanics. Fantastic times. I still use those skills. Buddy of mine wonders how I spot bad stuff the instant a hood gets popped open.

[@rlm975]

A very worthwhile use of funding. It's good to see maintenance side get good training tools.

[@yankeetango]

Wow, that's a lot of moving parts to keep in good working order, and that's just one!

[@76629online]

These hydraulic lines usually only fail during the Friday afternoon turnaround.

[@peterbyrne4709]

Hilarious. Exactly.

[@marshallpoe8087]

Once again we see that the engineering teams from the Military Aircraft Contractors build the best trainers in the world. One thing I enjoyed as a FTD Master Instructor was the quality of the trainers. So good to use for training young USAF maintenance techs.

[@batteriesrequired9401]

Superb design, magnificent.

[@ronfry3324]

Looks like the same trainer I trained on in 1975 at Sheppard AFB. Lots of acurate timing in play.

[@matsv201]

I Would say its dependencies, not timing. The display show when the previus steps are finished. Some steps lick locking need all previus steps being finished. The four previus steps finish one by one, and when the fourth one is finished it locks really freaking fast after that.

[@ronfry3324]

@@matsv201 thats timing. Or better said, sequencing.

[@md.mustafizurrahman5820]

@@ronfry3324 ccd

[@Dachamp2001]

Some times I wonder how the engineers come up with these main landing gear designs 🤷‍♂️

[@MasboyRC]

Great video, thank's for sharing 👍

[@gorgewashington1216]

nice video multiple camera really good idea

[@barriedouglas7272]

Just Amazing.

[@TCPUDPATM]

What I hear - are those electric pumps for hydraulic fluid that drives everything?

[@tristanacosta407]

Already those wheels makes the c-5 a more flamboyant option than its counterparts.

[@David-yy7lb]

That is some really cool mechanical engineering however I always wondered in the c5 galaxy history has the main landing gear ever got stuck sideways

[@Stealthmuiz]

It happens, but there are ways to manually rotate it. And if that doesn’t work, you can retract the affected gear and land with the rest.

[@carosellafrederick4510]

Une pure merveille 🤩

[@KTIIbot]

Wow. Vraiment impressionnant 👍👍👍👍👍

[@chrisipad4425]

Great video but would be even better if you could include "gear down" as well!

[@olivertaylor8788]

Awsome......Can i get one for my galf kart?

[@Bovafett]

What am I doing with my life that this is in my recommended

[@aaronallgrunn7845]

Is there an emergency gear extension? Seemes like it couldn't free fall.

[@tonerotonero1375]

Not to mention the ability to swivel so that the gears can get perpendicular to the aircraft.

[@Teh_Random_Canadian]

Yes there is, usually a rip cord in the cockpit that decouples the hydraulics, causing the gear to fall under its own weight.

[@derekhall2079]

@@Teh_Random_Canadian after it falls how does it lock ?

[@Teh_Random_Canadian]

@@derekhall2079 I am assuming a locking arm falls into place as well.

[@Not-A-Load]

@@Teh_Random_Canadian There’s not a cord in the cockpit. The gear also doesn’t free fall down.

[@TractorMonkeywithJL]

Training rig for what? Do they use it to teach maintenance?

[@louissilvers5540]

British airways have one and its pretty cool, we never use it mind.

[@vietnamveteran8869]

Yes. Maintenance and operation.

[@robot_spider]

I'm not the engineer, but if I were, my answer would be this: "I built a training rig to help educate people on how sweet my design is."

[@BeCoShooter]

Cool.

[@andreferro4618]

The hatch touches a metal hose...

[@ChileMiPais]

Can anybody say why they don't have all the wheels placed on the landing gear

[@brutusmuerto]

This SO cool

[@LCdrDerrick]

So, is there a hand crank there, to wind up the tons of gear by hand. It should last a trained human about 20 minutes ( for one segment), in case the hydraulics or the engines and also the batteries and the apu as well as the ram pressure turbine fail alltogether.

[@Stealthmuiz]

It would take a lot for a complete hydraulic failure on the gears to occur. Even so, there are multiple ways to extend the gear in an emergency.

[@bobolulu7615]

I hear what sounds like an electric motor when it retracts. Where is this motor that pulls the wheel assembly up?

[@josephhacker6508]

Probably a hydraulic pump running

[@Stealthmuiz]

It’s a hydraulic motor. It’s just out of view on the top right of the screen at 0:45

[@lukebalderose334]

So as you can see there is very little room for a human to sneak into

[@GRosa250]

Pretty complex, I’m sure everything about it is super expensive

[@matsv201]

Electromecanical computer control system.. no.. they are super cheap.... Well compared to have a human sitting there doing there on pay

[@patrickbrookings]

@@matsv201 The computer technology is most likely the cheapest part. What's expensive are the parts, which need to be extremely durable for obvious reasons. A tire alone costs several thousand USD.

[@matsv201]

@@patrickbrookings well.. that is of cause true. But a 4 link system might be cheaper... but it would have been considetly heavier. Of cause a 4 link assembly of this size would be quote a bit expensive as well

[@Shenanigans3D]

@@matsv201 it might be cheap but remember. It's military! So the prices are extremely inflated.

[@1slotmech]

@@Shenanigans3D A C-5M is bigger than a 747 but is rough-field capable and has kneeling capabilities on the ground for loading purposes. That's not gonna be cheap, no. :)

[@bonose12]

A frightening piece of engineering.

[@josephhacker6508]

Yeah the landing gear is veerrry scary

[@derekhall2079]

@@josephhacker6508 it stalks people in the airport late at night lol

[@xmodalloy]

What happens if the guide wheels miss that guide track to fold the gear flat?

[@Stealthmuiz]

That could only happen if the gear doesn’t rotate all the way. If that happens the gear won’t retract.

[@peanuts2105]

That is some training rig!

[@halnineooo136]

Reinventing the aircraft wheel

[@LMays-cu2hp]

Very nice.

[@mysteryunwrapping9518]

Some of afgani trapped inside here while escaping.

[@astrodiver1]

Why isn't this done with all the hardware integrated?

[@sharpe3698]

Can someone explain why the trainer actually deploys a physical wheel? Was the built before simulating the entire thing in a computer was feasible? Or am I misunderstanding and it's a testbed/prototype for the gear?

[@dmytrogubskyi4355]

It’s a trainer for maintenance crews. Students are watching how exactly the entire assembly is working, plus assembling/disassembling any part of it and check how it works, getting tasks to find out what is wrong, etc. Like a construction toy, but with a real thing they will work with in the future.

[@nocalsteve]

These are literally a C-5s training wheels.

[@mattfry7591]

Is there a way to simulate pilots slashing the tires in Guam?

[@ScumfuckMcDoucheface]

What does this reference? Was there some kind of pilot insurrection?? haha

[@mattfry7591]

@@ScumfuckMcDoucheface the joke is that C-5s break all the time in the super nice locations

[@ScumfuckMcDoucheface]

@@mattfry7591 hahaha yup, right over my head, pretty funny though

[@jjosephm7539]

Need to show this to anxious Afghanis

[@charlesbonkley]

1:15 - Must have been recorded with a Samsung phone.

[@motley331]

i don't think its complicated enough. back to the drawing board !

[@ironkitteh]

So the landing gear has landing gear

[@robotkabot7541]

Satisfying as F*CK

[@yukinamatusima]

ギャラクシーのギヤは楽しい

[@josephhacker6508]

Some of the comments here are super weird

[@ghostrider-be9ek]

wow, very harsh actuations = more maintenance headaches. No wonder lockheed was almost cancelled for this aircraft. 1:13 - no need to flex that much

[@ImpendingJoker]

I really don't know what you think you are looking at but I do not see anything too much more compilated than any other aircraft landing gear system, also Lockheed beat Boeing with this aircraft pretty handily, so I don't know what you're talking about them being almost canx for this system. This kneeling system is what won them the contest.

[@shawnbyers6291]

Exactly,! The story I heard, was the C-5 landed, knelt, offloaded a vehicle, unknelt, and took off again. Boeing couldn’t compete with that at the time.

[@markhenry1144]

Yup, just imagine hosing 5 bodies out of that compartment.....

[@zynnotzen]

This is a c5 not a c17

[@markhenry1144]

@@zynnotzen Oops

[@ralphlourens9081]

все бах бах бух, уххх !

[@johnknapp952]

Are the instructors able to easily induce failures into the trainer for troubleshooting purposes? Like swapping in a faulty value or bad hydraulic line or even a bad control panel.

[@peterbyrne4709]

Former C5 crew chief here, yes we used this in the advanced troubleshooting shooting school I attended. The instructor would create electronic or hydraulic or combination of faults and we would have to break out schematics and find the problem. They had similar trainers for nose gear, forward and aft cargo doors, ramps, and primary and secondary flight controls.

[@jadesea562]

@Peter Byrne ayyy Gears&Doors guy, me too 🤘🌟🍻

[@dannysunwantedopinions]

That seems like an awful lot of mechanics that could go wrong

[@agentsmith3825]

Any suggestion for a better model ?

[@dannysunwantedopinions]

@@agentsmith3825 haha! Certainly not!

[@chuckwagon5518]

Americans make good airplanes!

[@makantahi3731]

hm, very simple with a few parts

[@shakes7333]

Pretty complex for what it has to do.

[@bretzeletouffeur7401]

I would like that in my garage with a 88 canon instead of the landing gear, would be perfect to welcome the injection fanatics we have in France..

[@agentsmith3825]

Amen

[@alphasiera1757]

Why not just make it retract like c130's gears

[@bestamerica]

' beautifully C-5 super galaxy gear retraction wheel landing down and up... but the videocamera is a poor quality

[@user-l4n9l]

733 TRS

[@blackkinglespy]

Pourquoi faire simple quand on peut faire compliqué ? 😂

[@Koba8275]

Ох и наворочено...

[@homogenius339]

No wonder they break so much. Too many moving parts

[@Spinolio]

So. Many. Pinch. Points...

[@yolunik]

Il n'y a que moi qui me rends compte que des soit-disant ingénieurs fonts entrer un train de pneus devant tourner a minima à 230 Kmh linéaire avec un échauffement de dingue sur le moyeu!??? ¯\_(ツ)_/¯ Et qu'il n'en ai rien sur les tests??? *de quoi?¯\_(ツ)_/¯🤷‍♂️ Après on vous dira que les tests étaient bons!👺👺👺👎🙃

[@user-l4n9l]

Mod​

[@Chupria]

So shakey...not impressed.

[@demiancaropro1924]

Boooooooo

[@AvStevieStevenJamesDrums]

Cool