- 行业: 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 mechanism used with a rotating wheel or shaft in which friction is used to slow its rotation.
Industry:Aviation
A medium-weight line made up of short dashes that shows a surface of a part that is not visible in the view shown.
Industry:Aviation
A mercury-vapor lamp enclosed in a transparent housing made of quartz, rather than glass. Quartz resists heat better than glass and allows ultraviolet rays to pass through, rather than absorbing them as glass does.
Industry:Aviation
A message sent by a Flight Service Station or Air Route Traffic Control Center that requests an extensive communications search for an overdue, unreported, or missing aircraft.
Industry:Aviation
A metal braid that encloses wires which carry high-frequency alternating current or high-voltage DC that has radio-frequency energy superimposed on it. The shielding intercepts any electromagnetic radiation and carries it to the engine structure so it will not interfere with any installed electronic equipment.
Industry:Aviation
A metal disk with a 360° graduated scale marked on its face and a weighted pointer mounted on a bearing in its center. When the disk is clamped onto the end of the propeller shaft of an aircraft reciprocating engine, the pointer points directly upward. The disk rotates with the propeller but the pointer continues to point straight upward and indicates on the scale the number of degrees the shaft has rotated.
The timing disk is used with a top-dead-center indicator to position the crankshaft of the engine for valve and ignition timing.
Industry:Aviation
A metal or glass tube with such a small inside diameter that capillary action causes liquid to move in the tube.
A soft copper capillary tube is used with a vapor-pressure thermometer connecting the temperature-sensing bulb to the Bourdon tube. The tube is protected from physical damage by enclosing it in a braided metal wire jacket.
Industry:Aviation
A metal that reacts readily with oxygen to form an oxide. Aluminum and magnesium are both reactive metals.
Industry:Aviation
A metal, wood, or plastic cuff installed around the shank of a propeller blade to carry the airfoil shape of the blade all the way to the propeller hub.
The airfoil shape of the cuff pulls cooling air into the engine.
Industry:Aviation
