- 産業: 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 heavy flange machined around the base of an air-cooled cylinder barrel, slightly below the bottom cooling fin. Holes are drilled in the cylinder flange so the cylinder can be mounted on studs in the engine crankcase.
Industry:Aviation
A heavy glass jar with a dome-shaped top and an open bottom. Bell jars are used as vacuum chambers in science laboratories.
The bottom of the bell jar is ground perfectly flat, so it forms an airtight seal with a flat surface plate, and a vacuum pump connected to the inside of the bell jar pumps all the air out of it.
Industry:Aviation
A heavy liquid or paste spread between two surfaces to form a seal. Sealant may be used with a gasket or, in some instances, instead of a gasket.
Industry:Aviation
A heavy metallic, pentavalent chemical element. Bismuth is brittle, grayish-white, crystalline, and highly diamagnetic. Bismuth’s symbol is Bi, its atomic number is 83, and its atomic weight is 208.980.
Bismuth is often used to dope silicon or germanium to make P-type semiconductor material and is also used as an alloying agent for changing the characteristic of certain metals.
Industry:Aviation
A heavy ring of copper or other metal placed over a relay coil. The slug acts as a short-circuited winding, and the magnetic field produced by current induced in the slug slows the operation of the relay.
Industry:Aviation
A heavy spring-loaded mechanism built into an aircraft reciprocating-engine starter that allows the starter drive to slip enough to take up the initial shock when the starter is engaged. The slip clutch minimizes the shock that could damage the engine or the starter when the starter engages.
Industry:Aviation
A heavy spring-steel washer split at an angle across its face and twisted. When a nut is tightened down over a split lock washer, the twist is flattened out, and the spring action of the washer pushes against the nut and holds its threads tight against the threads of the bolt. This pressure between the threads prevents vibration from loosening the nut.
Industry:Aviation
A heavy steel block or bar with smooth, hardened surfaces, or faces. A bucking bar is held flat against the end of the shank of a solid rivet when the head is driven with a rivet gun. Driving the rivet flattens the end of the shank against the bucking bar and forms the bucked, or shop, head.
Industry:Aviation
A heavy steel disk mounted on and turned by the headstock of a metalworking lathe.
Work to be turned on the lathe can be mounted on the faceplate.
Industry:Aviation
A heavy structural member, often in the form of a steel tube, used to hold the spars of a Pratt truss airplane wing apart. A compression strut opposes compressive loads between the spars put there by the tensile loads from the drag and anti-drag wires.
Industry:Aviation
