- 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 ...
A low-frequency, long-distance navigational aid used principally for transoceanic navigation.
Industry:Aviation
A low-melting-point metal used for the fusible links in an automatic sprinkler systems. Newton’s metal, which is made of 50% bismuth, 31% lead, and 19% tin, melts at 95° Celsius.
Industry:Aviation
A low-power, low- or medium-frequency (L/MF) radio beacon installed at the site of the outer or middle marker of an instrument landing system (ILS).
Compass locators can be used for navigation at distances of approximately 15 miles or as is authorized in the approach procedure. The outer compass locator (LOM) is installed at the site of the outer marker of an instrument landing system, and the middle compass locator (LMM) is installed at the site of the middle marker.
Industry:Aviation
A low-power, single-frequency (75-MHz), highly directional radio transmitter located at an important aviation navigation fix. The signal from a radio marker beacon is received only when the aircraft is directly above the transmitting antenna.
Industry:Aviation
A low-powered, 75-MHz, fixed-frequency radio transmitter that directs its signal vertically upward in a small, fan-shaped pattern. Marker beacons are located along the flight path used when approaching an airport for landing, and are identified by their modulation frequency and keying code. When received by compatible airborne equipment, marker beacons indicate to the pilot, both aurally and visually, when the aircraft is directly over the facility.
When the aircraft is directly above the outer marker the pilot hears a series of 400-hertz dashes and the blue light illuminates in the series of dashes. Over the middle marker, the amber light illuminates in a series of alternate dots and dashes and the aural tone is a series of 1,300-hertz dots and dashes. The inner marker is identified by the white light illuminating in a series of dots and a series of 3,000-hertz dots is heard by the pilot.
Industry:Aviation
A low-resistance precision resistor installed in parallel with an ammeter between a source of electrical energy and an electrical load to allow the meter to read a flow of current which exceeds the limit of the instrument.
Most of the current in the circuit flows through the shunt and produces a voltage drop. The ammeter, acting as a millivoltmeter, measures the voltage drop across the shunt and indicates, on a special scale, the amount of current flowing through the circuit.
Industry:Aviation
A low-resistance wire or metal strap used to connect a structural component or an electrical component to the basic structure of an aircraft. Bonding jumpers carry the return current from an electrical component back to the battery.
Small bonding jumpers connect flight control surfaces to the main structure to carry static electrical charges that build up when air flows over the surface into the main structure. Bonding prevents sparks that could cause radio interference.
Industry:Aviation
A lubricant that reacts with iron to form iron chlorides, sulfides, or phosphides on the surface of a steel part. These compounds reduce wear and damage to surfaces that are in heavy rubbing contact. EP lubricants are specially suited for lubricating gear trains.
Industry:Aviation
A lubricant used on threads to prevent their locking together. Antiseize compound is specially needed on spark plugs in reciprocating engines and on threaded fasteners in the hot section of gas turbine engines.
Industry:Aviation
