- 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 method of navigation in which a pilot proceeds from checkpoint to checkpoint by visual reference to objects on the ground.
Industry:Aviation
A method of nondestructive inspection for internal faults in a piece of material. A pulse of ultrasonic energy of known frequency and intensity is induced into the material, and the vibration produced by this energy is displayed on an oscilloscope. There is a definite change in the vibration pattern if the wave of energy passes over a fault within the material.
Industry:Aviation
A method of nondestructive inspection used to detect surface defects in metal or plastic parts. The part to be inspected is soaked in a penetrating liquid for a specified period of time, and then all the penetrant is washed from its surface. The surface is then covered with a developing powder that pulls the penetrant from any defects that extend to the surface of the part. The penetrant plainly shows up on the powder-covered surface, outlining the defect.
Industry:Aviation
A method of preparing a hole in sheet metal to receive flush rivets. A male dimpling die forces the metal around the rivet hole into a female die to form a depression into which the rivet head fits.
A countersunk-head rivet fits into a dimpled hole in such a way that the top of the head is flush with the surface of the metal.
Industry:Aviation
A method of preventing corrosion of aluminum alloy parts. A hard oxide film is formed on the surface of the metal by an electrolytic process. This film prevents oxygen reaching the surface of the metal.
The aluminum alloy is the anode of the electrolytic cell, and chromic acid is used as the electrolyte.
Industry:Aviation
A method of producing a close fit between two metal parts by rubbing them together with a very fine abrasive lapping compound between them. The fit of a lapped joint is checked by removing all the lapping compound and lightly coating one of the surfaces with Prussian blue transfer dye. The parts are reassembled and rubbed together. If the parts fit as they should, the Prussian blue will transfer evenly to the part that was not covered. If not enough blue transfers, more lapping is required.
Industry:Aviation
A method of producing large numbers of identical objects by the use of specialized jigs and fixtures. In the process of mass production, the manufacturing procedure is broken down into small steps that can be performed by automatic machinery or that can be done quickly and repeatedly by unskilled workers. Mass production of interchangeable parts has made the manufacture of complex equipment possible and economical.
Industry:Aviation
A method of propulsion by thrust produced as a relatively small mass of air is accelerated through a large change in velocity.
Industry:Aviation
A method of protecting aluminum alloys from corrosion by rolling a coating of pure aluminum onto the surface of the alloy. Cladding is done in the rolling mill.
Industry:Aviation
A method of protecting aluminum or magnesium alloys from corrosion. Passivation consists of forming a hard, tight oxide film on the surface of the metal by chemical action.
Industry:Aviation
