- 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 ...
An imaginary flow of electricity said to go from the positive terminal of an electrical source to its negative terminal. The actual movement within an electrical circuit is that of electrons and is called electron current.
The arrowhead in a semiconductor diode symbol points in the direction of conventional current, while electron current moves in the opposite direction.
Industry:Aviation
An imaginary great circle on the surface of the earth that passes through the North and South geographic poles. The reference, or prime, meridian passes through the Royal Observatory in Greenwich, England, and the meridians are numbered in degrees east and west to the 180° meridian, which is the international date line.
Industry:Aviation
An imaginary line drawn through an airfoil from its leading edge to its trailing edge. The chord, or chord line, is used as a reference, or datum, for laying out the curve of the airfoil.
Industry:Aviation
An imaginary line passing through the center of gravity of an airplane and extending across the airplane parallel to a line joining the wing tips. The lateral axis is also called the pitch axis, and movement of the elevators rotates an airplane about its lateral axis.
Industry:Aviation
An imaginary line passing vertically through the center of gravity of an aircraft. The vertical axis is called the z-axis, or the yaw axis.
Industry:Aviation
An imaginary line perpendicular to the lines of magnetic flux passing between the field poles of an electric motor or generator. If the brushes are mounted along this neutral plane, the segments of the commutator they short across have the same electrical potential, and there will be no sparking at the brushes.
Industry:Aviation
An imaginary line through an aircraft from nose to tail, passing through its center of gravity. The longitudinal axis is also called the roll axis of the aircraft. Movement of the ailerons rotates an airplane about its longitudinal axis.
Industry:Aviation
An imaginary line through an airfoil along which air can flow over both sides of the surface of the airfoil and not produce any lift. The zero-lift line is the chord line of a symmetrical airfoil, but it is at a negative angle of attack for an asymmetrical airfoil.
Industry:Aviation
An imaginary line, parallel to the propeller shaft of an engine installed in an airplane.
Industry:Aviation
An imaginary vertical plane that passes through the longitudinal axis of an aircraft and divides the aircraft into two symmetrical halves.
Industry:Aviation
