- Industria: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
A valve in the static air system that supplies reference air pressure to the altimeter, airspeed indicator, and vertical speed indicator.
Normally these instruments pick up their reference air pressure from a static vent on the outside of the aircraft. If this vent ever becomes clogged with ice, the alternate static air valve can be opened, and the instruments will be supplied with static air from some unpressurized area inside the aircraft.
Industry:Aviation
A valve located on the airframe side of the engine firewall that will completely shut off the flow of fuel, oil, or hydraulic fluid to the engine in the case of an engine compartment fire.
Industry:Aviation
A valve that allows fluid to flow through it in one direction, but prevents it flowing through in the opposite direction.
Industry:Aviation
A valve that opens or closes a port by sliding back and forth over it. Slide valves are used in reciprocating steam engines to open and close the passage into the cylinder to allow steam to enter and leave.
Industry:Aviation
A valve that relieves all pressure above a given amount. In a hydraulic system, the pressure is relieved back to the inlet side of the pump, and in a pneumatic system, it is relieved to the outside air.
Industry:Aviation
A valve used in a fluid power system to shut off the flow of fluid.
Industry:Aviation
A valve used in a turbine engine fuel system equipped with duplex fuel nozzles. When the demand for fuel is low, fuel flows through the primary manifold, but when the demand is high, the pressurizing valve opens and directs fuel into the secondary fuel manifold as well.
When the engine is shut down, the dump valve drains the fuel from the manifolds.
Industry:Aviation
A valve used in some large aircraft wheels that mount tubeless tires. The valve opens and relieves the excess pressure if the tire is accidentally overinflated.
Industry:Aviation
A valve used to maintain a specific pressure in a fluid power system by bypassing some of the fluid back to the inlet of the system-pressure pump.
Engine oil pressure in most aircraft engines is maintained at the correct value by the use of a bypass valve.
Industry:Aviation
A valve which screws into the end of the propeller shaft on which a Hydromatic propeller is mounted.
For all normal operations of the propeller, including feathering, the distributor valve acts only as an oil passage. But when the propeller is being unfeathered, the distributor valve shifts and directs high-pressure oil to the side of the piston in the propeller dome that moves the blades toward their unfeathered position.
Industry:Aviation
