- 업종: 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 method of soldering metals, such as aluminum, that are normally difficult to solder because of the speed with which surface oxides build up. The surface to be soldered is covered with a flux to prevent oxygen reaching it, and the tip of the soldering iron used to heat the surface is vibrated at a sonic rate. The vibrations loosen the surface oxides, and they float to the top of the flux. Since no new oxides can form under the molten flux, the solder can reach the hot, clean metal and adhere to it.
Industry:Aviation
A method of soldering two pieces of sheet metal together. Both surfaces that form the seam are tinned (covered with a thin coating of solder), and the joint is assembled. The entire assembly is put into an oven and heated enough to melt the solder in the joint and produce a tight, uniform seal.
Industry:Aviation
A method of stopping the growth of a crack in a piece of metal by drilling a small hole at the end of the crack. A crack in a piece of metal subject to vibration will continue to grow because of the stresses concentrated at its end in an extremely small area. Very little force acting on this tiny area will tear the metal.
If a small hole is drilled at the end of the crack, the forces, instead of being concentrated at the end of the crack, spread out around the circumference of the hole, and much more force is needed to tear the metal.
Industry:Aviation
A method of storing a large amount of digital information permanently and inexpensively on a disk similar to but smaller than a phonograph record. A high-power laser burns extremely small pits into the reflective surface of a disk to write, or record, digital data on the disk. The information stored on the disk is read by the reflection or the lack of reflection of a low-power laser shone on the surface. A reflection is read as a logic one, and a space where there is no reflection, an area caused by a pit, is read as a logic zero.
The fact that billions of bits can be stored on a relatively small disk makes laser memory an inexpensive method of storing video programs.
Industry:Aviation
A method of storing information for use in a digital computer. Tiny areas of magnetism can be formed in a thin film of magnetic garnet crystal. These tiny areas, or bubbles, can be moved about within the film to change the logic conditions they represent. Magnetic bubble memory allows an extremely large amount of digital information to be stored in an exceedingly small area.
Industry:Aviation
A method of strengthening the surface of a metal part by blasting it with steel shot. The blows from the steel shot produce a compressive stress on the surface of the metal which must be overcome by a tensile stress of a greater intensity before the tensile stress can cause the surface of the metal to crack.
Industry:Aviation
A method of synchronizing the propellers of a multiengine aircraft. The engines all turn at the same RPM, and the propellers rotate in such a way that a master blade on each propeller keeps the same relative position in its rotation as the master blade on each of the other propellers.
Industry:Aviation
A method of testing that results in the destruction of the part being tested.
Destructive testing is normally an engineering procedure, used to determine the ultimate strength of a device or part, and to identify its weakest point.
Industry:Aviation
A method of thermally joining metal parts with a molten nonferrous alloy that melts at a temperature below 800°F (427°C). The molten alloy is pulled up between close-fitting parts by capillary action. When the alloy cools and hardens, it forms a strong, leak-proof connection.
Industry:Aviation
A method of thrust augmentation used on engines with vectored nozzles. Fuel injected into the fan discharge air is burned to increase thrust.
Industry:Aviation
