航空術(shù)語(yǔ)詞典Dictionary of Aeronautical Terms 下

時(shí)間：2011-03-11 23:18來(lái)源：藍(lán)天飛行翻譯 作者：航空 點(diǎn)擊：次

tack rag (finishing system component). A clean, lintless rag, slightly damp with thinner. A tack rag is used to wipe a surface to prepare it to receive a coat of finishing material.
tack weld. A method of holding a structure together before it is permanently welded. The parts of the structure are cut and fitted together, and each joint is welded with a small spot. When all of the joints fit and line up as they should, the final welding is done.
tacky (finishing system condition). The condition of a finishing system in which the material is slightly sticky to the touch.
tag wire. Small-diameter, soft steel wire used to tie identification tags to objects.
TAI (Thermal Anti-Ice). See thermal anti-icing system.
tail boom (aircraft structure). A spar, or small-diameter structure that connects the tail section of an aircraft to a pod-type fuselage.
tail cone (gas turbine engine component). The cone-shaped section of the exhaust system of a gas turbine engine used to produce the correct change in area of the duct through which the exhaust gases leave the engine.
tailets. Small vertical surfaces mounted on the underside of the horizontal stabilizer of some airplanes to increase directional stability.
tail-heavy (aircraft balance condition). The condition of balance of an aircraft in which the center of gravity is behind its allowable aft limit.
tail load (aerodynamics). The downward aerodynamic force produced by the horizontal tail surfaces of an airplane. Tail load normally acts downward to give the airplane longitudinal stability. The lift produced by the wing of the airplane must overcome the downward-acting tail load, as well as the downward-acting force caused by the weight of the airplane.
tail pipe (engine exhaust system component). The part of the exhaust system of either a reciprocating engine or a gas turbine engine through which the exhaust gases leave the engine. If a muffler is installed in the exhaust system of a reciprocating engine, the tail pipe usually connects to the muffler and carries the exhaust gases away from the airplane.
tail rotor (helicopter component). The small, auxiliary rotor installed on the tail of a single-rotor helicopter. The tail rotor turns in a vertical plane to produce thrust that counteracts the torque produced by the main rotor. The pitch of the tail rotor blades is controlled from the cockpit by the control pedals.
tail skid (airplane landing gear component). A small skid mounted on the bottom of the aft end of the fuselage of an airplane equipped with a tricycle landing gear. The tail skid absorbs the shock and prevents damage to the structure if the airplane should be rotated too abruptly on takeoff.
In the early days of aviation when airplanes had no brakes and operated from grass fields, tail skids were used rather than tail wheels to support the tail of the airplane when it was on the ground.
tail warning radar. A radar system installed in military aircraft to warn the pilot of an aircraft approaching from behind.

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