- 行业: 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 pin installed in a helicopter rotor blade to serve as an index when aligning the blades of a semirigid rotor system.
Industry:Aviation
A pin punch with a long straight shank and a flat end. A drift punch is used to drive a shaft out of its hole.
Industry:Aviation
A pin used to protect a piece of equipment by intentionally shearing if the equipment should seize. A shear pin is used in the drive shaft of some engine-driven pumps. If the pump should seize, the shear pin will break and allow the shaft to turn, but the pump is protected from further damage.
Industry:Aviation
A pipe or similar device used to carry a liquid from a container in a stream that is easy to control.
Industry:Aviation
A pipe protruding upward from the bottom of a tank, or reservoir, that allows part of the tank to be used as a reserve, or standby, source of fluid. The oil supply tanks for some aircraft engines have a standpipe in them. The main engine-driven oil pump is supplied from the standpipe, and emergency oil to feather the propeller is taken from the bottom of the tank. If an oil leak causes a loss of all of the oil the engine pump can move, there is still enough oil left in the tank to feather the propeller.
Industry:Aviation
A pivoted arm on the cylinder head of a reciprocating engine. The pushrod forces one end of the rocker arm up, and as the other end moves down, it forces the intake or exhaust valve off its seat.
Industry:Aviation
A pivoted beam used in an aircraft control system to allow more than one force to act on a common point. For example, two pulling forces may be applied to the ends of a whiffletree, and the device being pulled is connected to the point between the pulling forces.
Industry:Aviation
A plain, four-sided, closed figure in which the opposite sides are parallel, and the adjacent sides have different lengths. None of the angles in a rhomboid are right angles (90° angles).
Industry:Aviation
A plane (flat), closed polygon with four sides. Squares, rectangles, parallelograms, and trapezoids are all forms of quadrilaterals.
Industry:Aviation
A plane (flat), closed, eight-sided figure. In a regular octagon, all sides have the same length, and all of the angles are the same.
Industry:Aviation
