- Settore: 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 applying pressure to a piece of laminated plastic material so all the layers are held in tight contact with each other. The reinforcing material is impregnated with liquid resin and laid up over a rigid mold in as many layers as are needed.
A sheet of flexible, airtight plastic material is placed over the mold, and the edges are sealed to form a bag over the part. The entire assembly is then placed in an autoclave, and the air pressure is increased to force the layers of material tightly together.
If an autoclave is not used, a vacuum pump can be attached to the inside of the bag and the air pumped out. The atmospheric pressure pressing on the outside of the bag supplies the needed force.
Industry:Aviation
A method of applying pressure to the glue in a scarf joint repair in a plywood skin. A strip of thin plywood is nailed over the glued scarf joint with the nails extending into a supporting structure beneath the skin. The strip is installed over vinyl sheeting to prevent it sticking to the skin. When the glue is thoroughly dry, the nailing strip is broken away and the nails removed.
Industry:Aviation
A method of assembling components in an electronic device. The components are mounted on a chassis, and wires are routed from the p ins on one component to the pins on another and soldered. Components built with printed circuit boards and integrated circuit chips have, to a great extent, replaced components made with point-to-point wiring.
Industry:Aviation
A method of assuring that all of the bearing cavities for a crankshaft or camshaft are in correct alignment. A boring bar extends through the crankcase and cuts the inside diameters of all the bearing cavities so they are concentric.
Industry:Aviation
A calibrated wrench which indicates the amount of torque being applied to a nut or bolt. This is done by measuring the amount the beam of the wrench deflects when the torque is being applied.
According to Hooke’s law of elasticity, the beam will deflect the same amount each time a given amount of torque is applied by the wrench.
The indication of the amount of torque is read by the position of a pointer attached to the drive of the wrench, over a fixed scale fastened to the beam of the wrench.
Industry:Aviation
A method of attaching fabric to the structure of an aircraft by sewing it with a strong waxed string called rib-stitching cord. The cord is passed around the wing ribs, through the top and bottom fabric, and over a reinforcing tape. Each stitch is locked with a modified seine knot.
Industry:Aviation
A method of attaching or joining parts in which the ends to be joined are shaped in the form of the spread-out tail of a dove. The rotor blades of some turbine engine compressors are attached to the disk by a dovetail joint. The periphery of the disk is cut with a series of triangular-shaped slots, and the blade roots are made with a dovetail-shaped end that fits into the slots in the disk.
The dovetail method of blade attachment holds the blades firmly against centrifugal force, dampens vibration, and compensates for the effect of temperature change.
Industry:Aviation
A method of attaching the fabric to the wing of an airplane in which only one loop of rib-stitching cord passes around the rib in each stitch.
Industry:Aviation
A method of attaching turbine blades into the turbine wheel. The root of the blade is shaped like a notched-edge Christmas tree which fits loosely in a similar-shaped slot in the periphery of the wheel. When the engine is cold, the blades are loose, but as the engine heats up, the blades tighten in the wheel.
Industry:Aviation
A method of brazing in which copper is used as the filler metal.
Steel parts to be brazed are put together with as little space as possible between them. Copper is melted along the edges of the steel parts, and as the molten copper wets the steel, capillary action pulls the molten copper between the steel parts. When the copper cools, it solidifies and forms a tight bond between the steel parts.
Industry:Aviation
