Aviation industry

In the aerospace industry, the pilot helps to control landing gear, jumpers, vertical ramps and lifts. Airports also use hydraulic systems in a variety of lifts.

And it is interesting that to test that they know that the fuselage is not perforated, they put air pressure between the fuselage walls.

Aircraft tests include

1. Wheel wind test which is 300 bar pressure
2. Testing all aircraft hydraulic system
3. Aircraft fuselage test
4. Mull device for hydraulic testing of F14 aircraft