- 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 hard, grayish-white, brittle, corrosion-resistant, metallic chemical element. Tungsten’s symbol is W, its atomic number is 74, and its atomic weight is 183.85. Tungsten, which melts at 3,400°C, is used for incandescent lamp filaments and as an alloying element to give steel toughness and strength at high temperature.
Industry:Aviation
A hard, white, acid-resistant, metallic chemical element. Ruthenium’s symbol is Ru, its atomic number is 44, and its atomic weight is 101.07. Ruthenium is used as an alloying agent for platinum and palladium and is also used in the manufacture of electrical contacts.
Industry:Aviation
A hard, yellowish, translucent, fossilized tree resin that is currently used to make small ornaments. Centuries ago it was discovered that when a piece of amber was rubbed with wool, it attracted small bits of straw and was thus one of the materials used in early studies of electricity. ambient. Surrounding. ambient air. Air that surrounds an object. ambient air pressure. The pressure of the air that surrounds an object. ambient air temperature. The temperature of the air surrounding an object.
Industry:Aviation
A hardened and polished steel surface on which antifriction bearings roll. The races for ball bearings are grooves. For tapered roller bearings, the races are cones, and for needle bearings, the races are flat rings.
Industry:Aviation
A hardened and polished surface on a rotating shaft that rides in a plain bearing. The bearing journal provides a smooth bearing surface and wears very little.
Industry:Aviation
A hardened steel block having a smooth, curved surface. Dolly blocks are used to back up a mallet when hand-forming sheet metal into compound curves.
Industry:Aviation
A hardened steel bushing installed in an assembly fixture. A piece of metal to be assembled is clamped in the fixture, and a twist drill is guided by the bushing to drill a hole at the correct location. The hardened metal prevents the bushing being worn by the drill.
Industry:Aviation
A hardened steel cutting tool with a narrow cutting edge. Chisels used to cut wood normally have a wooden handle which is hit with a mallet to drive the chisel blade into the wood. Chisels used to cut metal are called cold chisels.
Industry:Aviation
A hardened steel key made in the shape of a half circle. The rounded side of the key fits into a semicircular keyway cut into a shaft. The flat end fits into a slot cut into a wheel or disk mounted on the shaft. The key prevents the wheel or disk from turning on the shaft.
Industry:Aviation
A hardened steel rod with strong threads cut into it. A jackscrew may be rotated by hand or with a motor to apply a force or to move an object.
Industry:Aviation
