Verdaderamente, a estos grandes diseñadores de aeronaves hay que hacerles un altar en la inmensidad
@leiag201
That never gets old
@jeffreytopp4695
I would not be doing that test with the Electric Hydraulic Pumps (EMDP’s) like that. Should have a ground-based mule to assist the system. That is a lot of strain on those pumps to lift something that heavy. In normal operation, the Engine Hydraulic Pumps (EDP’s) do the work and they are much more designed to take that kind of load. The EMDP’s are only designed to be used in an emergency situation or to assist if one of the EDP’s fails or an engine fails. They are not designed to take the load of retracting the landing gear on the ground like that. We always use a mule which is a 480V 3-phase electric pump that is in a giant cart to do gear swings and RAT tests. It’s much heavier duty. The EMDP’s are never actually going to RAISE the landing gear in the case of an emergency. They will really only operate the flight controls and the flaps/slats. The landing gear will basically just free fall. I’m sure the AMM from Airbus specifies to use a mule for this test for this reason. If they burn up the EMDP’s doing these tests, they won’t be there to provide the redundancy to the hydraulic system in the case of an emergency. For light hydraulic tests like flaps, slats, and flight controls, it’s fine. But not to RAISE the landing gear. There is an ENORMOUS load on the hydraulic pumps during gear retraction. It’s actually enough of a load that the FADEC’s have to schedule more fuel into the engine to maintain thrust because the load on the accessory gear box is enough to slow the compressor section of the engines. This is actually VISIBLE on a 767-200/300 with the CF-6 engines. If you watch a video of one taking off from behind, like you’re lined up with the runway and facing the same direction as the airplane, you can actually see puffs of black smoke come from both engines at the moment the down-lock actuators release and the gear start to retract. That is the FADEC’s increasing fuel flow to the engines to compensate for the load on the hydraulic system. It’s that much of a load. This is not good to be doing on the EMDP’s.
@nedsackmann2215
If any of those guys ever seen an aircraft fall off jacks they wouldn't be talking under the plane on there cellphones 😂
@SixTenVisuals
That sounded like a old Chevy trying to start up
@JoseLuisOchoaPadilla
2 жыл бұрын
So, the side bogies are front-tilted when deployed, but slowly align to horizontal when retracting... why? (o_O) (I mean, why not let them stay aligned when deployed...?)
@user-lh1xo5ci1k
Жыл бұрын
โค ไพรอท..หอการส่แสาร..วิทยุการยิน..
@the-je6zn
whats the noise from that
@simonsmith9351
2 жыл бұрын
Wow you are good 👍
@mohammediyad9452
2 жыл бұрын
It sounds like Thomas the train at first
@ImmortalSynn
7 жыл бұрын
Whose bird is this? Thai?
@flakern5950
2 жыл бұрын
Seems like the Landing gears are wayyyyy to big for the Bois
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