- 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 radioactive chemical element found in uranium ores. Actinium’s symbol is Ac, and its atomic number is 89. Actinium is used as a source of alpha rays.
Industry:Aviation
A radioactive chemical element in the actinide series. Mendelevium’s symbol is Md, and its atomic number is 101. Mendelevium is made by bombarding lighter elements with light nuclei accelerated in cyclotrons.
Industry:Aviation
A radioactive chemical element, used as a source of neutrons in medicine and industrial radiography. Radium’s atomic number is 88, and its symbol is Ra. Its most abundant, naturally occurring isotope has a mass number of 226 and a half-life of 1,620 years.
Industry:Aviation
A radioactive, rare-earth chemical element used as a source of beta rays. Promethium’s symbol is Pm, its atomic number is 61, and the mass number of its most stable isotope is 145.
Industry:Aviation
A radioactive, synthetic chemical element in the actinide series. Nobelium’s symbol is No, its atomic number is 102, and its atomic weight is 254.
Industry:Aviation
A radioactive, synthetic chemical element produced by bombarding curium with helium isotopes. Californium’s symbol is Cf, and its atomic number is 98.
Industry:Aviation
A raised spot on a piece of metal that contains the salts of corrosion.
Corrosion forms under the surface of the metal, and since its salts have so much more volume than the metal they displace, the surface layer of metal is pushed out to form the blister.
Industry:Aviation
A ram-jet engine. An athodyd (Aero-THermO-DYnamic-Duct) is an open tube whose inside is specially shaped to produce thrust when fuel is burned in it.
When the athodyd moves through the air at a high speed, the air in its front end is compressed. Fuel is added to this compressed air and burned, and the burning fuel heats the air and expands it. This expansion accelerates the air to the rear and produces thrust.
Industry:Aviation
A range of engine RPM in which the natural vibratory frequency of the engine-propeller combination is excited. Continued operation in the critical range, which is marked on the tachometer dial with a red arc, can cause destructive vibration.
Industry:Aviation
