- Industry: 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 synthetic fiber made by the polymerization process, in which tiny molecules are united to form a long chain of molecules. Polyester fibers are woven into fabrics that are known by their trade names of Dacron, Fortrel, and Kodel. Polyester film and sheet are known as Mylar and Celenar.
Cloth woven of polyester fibers for use as an aircraft covering material is sold under such trade names as Poly Fiber, Eonnex, and Ceconite. This cloth is shrunk on the structure with heat, rather than with shrinking dope.
Industry:Aviation
A synthetic hydraulic fluid used in many high-performance aircraft hydraulic systems. Phosphate-ester hydraulic fluid is fire-resistant and is used in place of petroleum-base hydraulic fluid. It is identified by the military specifications number MIL-H-8446.
Industry:Aviation
A synthetic resin filled with millions of tiny bubbles. Foamed plastic is lightweight and resilient (soft and pliable) and is used as a packing material and a thermal (heat) insulator. Foamed plastic is sometimes called expanded plastic.
Industry:Aviation
A synthetic, metallic, radioactive chemical element. Fermium’s symbol is Fm, its atomic number is 100, and it has mass numbers ranging between 248 and 257. Fermium was first discovered as debris from a hydrogen bomb explosion, and it is now made in nuclear reactors.
Industry:Aviation
A synthetic, radioactive chemical element in the actinide series. Berkelium’s properties resemble those of cerium. Berkelium’s symbol is Bk, and its atomic number is 97.
Industry:Aviation
A synthetic, radioactive chemical element produced by neutron bombardment of uranium in cyclotrons. Einsteinium whose symbol is Es, and its atomic number is 99 was first discovered in the debris of a nuclear explosion.
Industry:Aviation
A synthetic, radioactive chemical element. Lawrencium’s symbol is Lr, and its atomic number is 103. One of the isotopes of lawrencium has a mass number of 257 and a half-life of eight seconds.
Industry:Aviation
A synthetically produced, silvery-gray, metallic chemical element. Technetium’s symbol is Tc, and its atomic number is 43. Technetium is used in the manufacture of corrosion-resistant steel.
Industry:Aviation
A system for communication between crew members of an aircraft. Interphone communications are normally conducted using the same microphone and earphones or speakers used for radio communications. A selector switch is positioned in such a way that the interphone signals do not enter the radio transmitter circuits.
Industry:Aviation
A system for controlling the clearance between tips of the compressor or turbine blades and the case of high-performance turbofan engines.
When the engine is operating at maximum power, the blade tip clearance should be minimum, and the ACC system sprays cool fan-discharge air over the outside of the engine case. This cool air causes the case to shrink enough to decrease the tip clearance. For flight conditions not requiring such close clearance, the cooling air is turned off, and the case expands to its normal dimensions.
Control of the ACC system is done by the FADEC, or Full-Authority Digital Electronic Control.
Industry:Aviation
