- 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 mechanical force amplifying system that uses two gears of different sizes. The smaller gear, the pinion, meshes with and turns faster than the larger gear. The ratio between the number of teeth on the pinion and the number on the large gear determines the mechanical advantage of the mechanism.
Industry:Aviation
A mechanical force that tries to move objects apart. There is a force of repulsion between like magnetic poles, between electrical charges of the same polarity, and between parallel wires carrying current in the same direction.
Industry:Aviation
A mechanical pump which moves fluid by pistons moving back and forth in the pump cylinders. In an axial-piston pump, the cylinders are arranged parallel to the pump axis, and in a radial-piston pump, the cylinders radiate out perpendicular to the axis.
Industry:Aviation
A mechanical rectifier mounted on the armature shaft of a DC generator or motor. It consists of a cylindrical arrangement of insulated copper bars connected to the armature coils. Carbon brushes ride on the copper bars to carry current into or out of the commutator, providing a unidirectional current from a generator or a reversal of current in the coils of a motor.
Industry:Aviation
A mechanical weight in the elevator control system of some airplanes.
The bob weight is used to apply a nose-down force on the elevator control system. This force is counteracted by an aerodynamic force caused by the elevator trim tab.
If the aircraft slows down enough that the aerodynamic force on the trim tab is lost, the bob weight forces the nose down, and the airplane picks up speed.
Industry:Aviation
A mechanism having two doors which open on opposite sides of the device in the same way the shell of a clam opens.
Industry:Aviation
A mechanism inside a gyroscopic instrument that locks the gimbals in a rigid position and holds the gyro so it cannot tumble if the aircraft maneuvers exceed the tumble limits of the gyro. The caging system also restores a tumbled gyro to its operating position.
Industry:Aviation
A mechanism inside an aircraft wheel used to apply friction to the wheel to slow or stop its rotation.
Industry:Aviation
A mechanism or system used to regulate or guide the operation of a machine or organization.
Industry:Aviation
A mechanism used to hurl, or launch, an object at a high rate of speed. Catapults are used to launch heavily loaded aircraft from the decks of aircraft carriers.
Industry:Aviation
