- 업종: 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 large transport-type aircraft used in air commerce for the transportation of passengers and/or cargo.
Industry:Aviation
A large umbrella-shaped device, made of lightweight cloth, used to slow an object falling through the air. Parachutes are folded into a pack and worn by a person who jumps from an aircraft. When the pack is opened, the parachute canopy is pulled out by the air and opens. The parachute creates so much drag that the wearer descends at a rate slow enough to prevent injury when contact is made with the ground.
Cargo parachutes are used to lower equipment at locations where it is impractical for airplanes or helicopters to land.
Industry:Aviation
A large, lightweight framework made in the shape of a tetrahedron, a triangular-shaped solid. The framework is covered with thin metal, wood, or fabric and is painted a bright color. It is mounted on a pivot so it is free to swing with the wind, and is installed near the center of an airport beside the runway, where it is easily visible from the air. The tetrahedron always points into the wind and shows pilots approaching the airport the correct direction to make their landing approach.
Industry:Aviation
A large, rigid, lighter-than-air flying machine. The Zeppelin gets its name from Count Ferdinand von Zeppelin who pioneered the design and manufacture of these large, cigar-shaped airships. Zeppelins were used in World War I, and to a limited extent in commercial air travel, until the time the huge German airship Hindenburg burned in 1939.
Industry:Aviation
A large, steerable, cigar-shaped, self-propelled lighter-than-air craft. Dirigibles are made of a rigid truss structure covered with fabric. Gas bags inside the structure contain the lifting gas, which may be either hydrogen or helium.
Industry:Aviation
A law of meteorology that helps understand the circulation of the wind. Buys Ballot’s law states that if, in the northern hemisphere, we stand with the wind striking us at our back, the center of the low-pressure area, around which the wind is blowing, is ahead of us and to our left.
Industry:Aviation
A law of physics that applies to several natural conditions, such as the strength of a magnetic field, the amount of light falling on a surface, and the intensity of sound pressure. When referring to the strength of a magnetic field, the inverse square law states that the strength of the field varies inversely (the strength decreases as the distance increases) as the square of the distance between the pole and the point at which the strength is measured.
For example, if we double the distance (make it two times as great), the magnetic strength is decreased to a value of one-fourth its original strength. One-fourth is the inverse square of two.
Industry:Aviation
A layer of aluminum built into the insulation blanket used around the hot section and exhaust of a gas turbine engine. The radiation shield prevents heat being radiated from the engine into the aircraft structure.
Industry:Aviation
A layer of fireproof insulating material used to keep heat from the tail pipe of a gas turbine engine from damaging the aircraft structure. Insulation blankets are usually quilted, to allow the maximum amount of insulating material to be used and at the same time make the blanket easy to install and hold in place.
Industry:Aviation
A layer of ionized particles in the atmosphere at an altitude of between 100 and 120 kilometers above the surface of the earth. Some radio waves cannot penetrate these particles, and they bounce back to the earth. The Kennelly-Heaviside layer is also called the Heaviside layer and the E-layer.
Industry:Aviation
