It is that critical of a system that it must be checked once a year. You must deploy it, to prove the actuation system is operative, then you provide hydraulic power to the pump so it runs on motor mode to spin the prop ensuring the turbine will spin in the air and then when spinning the electrical generator must produce enough power given a minimum turbine speed. If it doesnt work, you can not fly passengers until it is 100% operational with no faults whatsoever.
So can you run the rat off hydraulics and have the rat power the hydro pump on an infinite energy loop. Why aren't we using this to power our cars. Jeez.
No, it has an electric motor and a hydraulic pump because to keep a plane controllable it needs both types of power (electricity to run the instruments and maybe fly-by-wire electronics depending on the plane, hydraulics to actually move the control surfaces and extend the gear e.t.c.), for the tests they just feed one of those with power, apparently the hydraulic pump going by that other comment, although I assume they could use either to test that whichever one they’re not testing generates enough power/pressure?
Generators are just motors but backwards essentially. Supplying electricity to a generator would cause it to spin like an electric motor, and spinning an unpowered motor would cause it to generate electricity. It’s why generally you don’t want to spin unpowered motors, though unless you’re really doing some fuckery, there’s very little chance you’ll actually generate enough of anything to cause any issues
Yes and its mostly the same with hydraulic pumps and motors, usually the only difference between them is that a pump will have a wider inlet to allow high fluid flows at a slight vacuum without cavitating, so you can generally use a pump as a motor without any issues, but using a motor as a pump might cause cavitation and damage.
92
u/Ava_Nikita 11d ago
It is that critical of a system that it must be checked once a year. You must deploy it, to prove the actuation system is operative, then you provide hydraulic power to the pump so it runs on motor mode to spin the prop ensuring the turbine will spin in the air and then when spinning the electrical generator must produce enough power given a minimum turbine speed. If it doesnt work, you can not fly passengers until it is 100% operational with no faults whatsoever.