- Industry: 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 type of actuator in a fluid power system that uses fluid under pressure to move it in one direction, but a spring to return it. Hydraulic brakes use single-acting actuators to move the brake shoes out against the rotating drum. Hydraulic pressure moves the shoes out, but a spring pulls them back when the brake pedal is released.
Industry:Aviation
A type of adapter used in a constant-flow oxygen system to increase the flow of oxygen to a mask being used by a passenger known to have a heart or respiratory problem.
Industry:Aviation
A type of adhesive that is spread on both surfaces to be joined and allowed to dry. The dried contact cement is not sticky to touch, but when the two coated surfaces are brought into contact with each other, they bond tightly together.
Industry:Aviation
A type of advection fog that forms when air that has been lying over a warm land surface moves over a colder water surface.
Industry:Aviation
A type of aerial photography in which photographs are taken with the camera pointed at an angle, rather than straight down, as is done in aerial mapping.
Industry:Aviation
A type of aerodynamic control surface, used on some airplanes to increase the lift produced by the wing. Part of the leading edge bends downward to increase the camber (the curvature) of the airfoil. Increasing the camber increases the pressure difference across the wing, which in turn increases the lift. Leading-edge flaps are used for both takeoff and landing, to increase the lift at low airspeed.
Industry:Aviation
A type of aerodynamic drag caused by air flowing over the surface of the aircraft. Skin friction is a component of parasite drag.
Industry:Aviation
A type of aileron used for lateral control of an airplane. The hinge line of a Frise aileron is set back from the leading edge so a portion of its surface is ahead of the hinge line. When the aileron is raised, to lower the wing on which it is mounted, the portion ahead of the hinge line protrudes below the wing and causes parasite drag. This parasite drag counteracts the induced drag produced on the opposite wing when its aileron is lowered. Frise ailerons minimize adverse yaw.
Industry:Aviation
A type of air and/or oil seal used around the main-shaft bearings in a gas turbine engine. The seal consists of a series of rotating blades that almost contact the seal land. A small amount of air flows between the seal and the land and prevents oil flowing past the seal.
Industry:Aviation
