- 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 type of hand-operated pump used to move a fluid such as gasoline or oil. The handle of a wobble pump is attached to a flat plate inside a housing that is equipped with four flapper-type check valves. Moving the handle back and forth (wobbling it) pulls fluid into one side of the pump and forces it out the other side.
Industry:Aviation
A type of hand-operated torque wrench in which the wrench handle snaps when the preset torque on the wrench drive is reached.
The preset value of torque is determined by the compression of a spring in the wrench handle, and this compression is adjusted by screwing the handle onto the wrench body. The body and handle are marked in the same way as the spindle and thimble of a micrometer caliper.
Industry:Aviation
A type of hardware used to fasten concentric tubes together or to fasten a sleeve around a solid shaft. A tapered pin is pressed into a tapered hole drilled through the components to be joined. Some tapered pins are secured in place by passing safety wire through a hole in the large end of the pin and then wrapping it around the shaft or tubes. Other tapered pins are secured with a nut screwed onto threads cut onto the small end of the pin.
Industry:Aviation
A type of heat treatment in which the metal is heated in a furnace until its temperature is uniform throughout. It is then removed from the furnace and quenched in cold water. When the metal is hot, the alloying elements enter into a solid solution with the base metal to become part of its basic structure. When the metal is quenched, the alloying elements remain a part of the base-metal structure.
If the metal is not immediately quenched after it is removed from the furnace, some of the alloying elements will precipitate, or settle out, of the solid solution with the base metal, and the grain structure will enlarge. The metal will not be as strong as it would have been if it were properly quenched, and intergranular corrosion is likely to form along the enlarged grain boundaries.
Industry:Aviation
A type of heat treatment of steel. When steel parts are forged, machined, or welded, stresses are often locked in them that cause the parts to warp or break. These stresses can be relieved by heating the part until it is red-hot and then allowing it to cool slowly in still air to room temperature. This type of stress relieving is called normalizing.
Industry:Aviation
A type of heavier-than-air aircraft able to rise and descend vertically. The convertaplane rises vertically by using rotors similar to those on a helicopter. But, when it is in the air, the rotors can be tilted forward to produce thrust to pull the convertaplane through the air as a fixed-wing aircraft.
Industry:Aviation
A type of heavier-than-air aircraft that has no fuselage or separate tail surfaces. The engines and useful load are carried inside the wing, and movable control surfaces on the trailing edge provide both pitch and roll control.
Industry:Aviation
A type of helicopter rotor that allows the pitch of the blades to be changed by rotating the blades about their feather axis (the axis that extends along the length of the blade). The blades cannot flap up and down individually, but the entire rotor can flap as a unit. It is free to teeter (rock back and forth) about the mast.
Industry:Aviation
A type of high-energy ignition system that produces a hot spark for starting a gas turbine engine.
In a capacitor-discharge ignition system, electrons are stored under high voltage in capacitors. When these electrons are released, they cause a high-intensity spark to jump across the gap in the igniters.
Industry:Aviation
A type of hollow-shank, high-strength blind rivet. The rivet is put into the hole in the structure, and a tapered pin is driven into the hollow shank. The pin expands the rivet so serrations on the outside of the shank press into the sides of the hole and hold the rivet firmly in place.
Industry:Aviation
