- 産業: 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 securing one steel structural tube inside another. Small holes are drilled in the outer tube, and the inner tube is welded to it around the circumference of the holes. Rosette welds are used to prevent the inner tube moving inside the outer tube. This type of weld gets its name from the fact that the finished welds look like small roses.
Industry:Aviation
A method of selecting the frequency to which a radio-frequency circuit is resonant by changing the inductance in a tuned circuit. The resonant frequency of an L-C circuit (a circuit that contains both inductance and capacitance) can be changed by changing the amount of either the inductance or the capacitance.
The inductance is normally changed by moving a powdered iron slug into or out of the coil. Moving the slug into the coil increases the inductance, and pulling the slug out of the coil decreases the inductance.
Industry:Aviation
A method of separating aircraft in a composite route system where, by management of route and altitude assignments, a combination of half the lateral minimum specified for the area concerned and half the vertical minimum is applied.
Industry:Aviation
A method of separating liquids which have different densities by spinning them in a centrifuge.
Industry:Aviation
A method of setting one voltage exactly equal to another. When no current flows between the two voltages, as indicated by a sensitive current-measuring instrument, the two voltages are exactly the same. The voltages have nulled out, or cancelled, each other.
Industry:Aviation
A method of showing all the sides of an object by projecting straight lines from the object to the drawing surface. An orthographic projection of a solid object requires six separate views: top, bottom, right and left sides, front, and back.
Industry:Aviation
A method of shrinking or stretching sheet metal into compound curves by hand-hammering it into a sandbag or into or around wood or metal forming blocks.
Industry:Aviation
A method of slowing the rotating armature of an electric motor. When the brake control switch is moved to the STOP position, it removes power from the motor and connects the armature across an electrical load. As long as the armature is rotating, it produces electrical current, and power is required to force this current through the load. This power taken from the rotating armature causes it to slow down.
Industry:Aviation
A method of soldering aluminum with soft solder. Aluminum is difficult to solder because, when it is heated, oxides form on its surface and prevent the solder wetting the metal.
The tip of a special soldering iron is vibrated at an ultrasonic frequency as it heats the metal and melts the flux in the solder. This vibration breaks the oxide film away from the surface of the metal, and it floats on top of the flux. The flux covers the hot metal and prevents new oxides forming. Soft solder will stick to aluminum when there are no oxides on it.
Industry:Aviation
A method of soldering components to a printed circuit (PC) board. All the components are assembled on the PC board, and the side of the board on which the copper strips are formed is treated with flux.
A tank of molten solder is vibrated so waves form on the surface of the solder, and the board is passed over the solder so the tip of the waves touch the fluxed copper strips. All the component leads protruding through the board are soldered to the copper strips.
Industry:Aviation
