Search results
Results from the WOW.Com Content Network
The hydraulic system is also used to extend and retract landing gear, operate flaps and slats, operate the wheel brakes and steering systems. Hydraulic systems consist of engine driven pumps, fluid reservoirs, oil coolers, valves and actuators. Redundancy for safety is often provided by the use of multiple, isolated systems. [3]
The systems evolved, replacing the mechanical linkages to the valves with electrical controls, producing the "fly-by-wire" design, [3] and more recently, optical networking systems called "fly-by-light". All these systems require three separate components, the hydraulic supply system, the valves and associated control network, and the actuators.
In these incidents, there was a failure of control system components themselves (e.g. cables, hydraulics, flaps, slats, ailerons, rudder, stabilizer, trim tabs, auto-pilot). (Control system fatigue failures are here, but improperly installed or incorrectly adjusted controls in the next section.) United Airlines Flight 585, Boeing 737, March 3 ...
In aviation, a power transfer unit (PTU) is a device that transfers hydraulic power from one of an aircraft's hydraulic systems to another in the event that the other system has failed or been turned off. The PTU is used when, for example, there is right hydraulic system pressure but no left hydraulic system pressure.
The vertical fin separated from the airplane. Hydraulic components located in the aft body were also severed, leading to a rapid depletion of all four hydraulic systems. The loss of the vertical fin, coupled with the loss of all four hydraulic systems, left the airplane extremely difficult, if not impossible, to control in all three axes.
An autobrake is a type of automatic wheel-based hydraulic brake system for advanced airplanes. [1] The autobrake is normally enabled during takeoff and landing procedures, when the aircraft's longitudinal deceleration system can be handled by the automated systems of the aircraft itself in order to keep the pilot free to perform other tasks.
The main hydraulic system provided pressure for undercarriage raising and lowering and bogie trim; nosewheel centring and steering; wheel brakes (fitted with Maxarets); bomb doors opening and closing; and (B.2 only) AAPP air scoop lowering. Hydraulic pressure was provided by three hydraulic pumps fitted to Nos. 1, 2 and 3 engines. An ...
Aviation structural mechanics perform routine maintenance on an MH-60S Sea Hawk helicopter. Aviation Structural Mechanics maintain aircraft airframe and structural components including flight surfaces and controls, hydraulic and pneumatic control and actuating systems and mechanisms, landing gear systems, air conditioning, pressurization, visual improvement, oxygen and other utility systems ...