bayonet fitting /be..n.t f.t../
noun a means of attaching something to something, in which an object with two side pins is inserted into a L-shaped slot in another object on some light-bulbs .
Magnetic chip detectors are of the bay-onet type fitting and can be removed and replaced very quickly.
beacon /bik.n/ noun a light or radio signal for navigational purposes . If the aircraft turns towards the beacon, sig-nal strength will increase.
beam /bim/ noun 1. a long thick metal bar used as a support . A beam is designed with a breaking load of 12 tons but when a three ton load is applied repeatedly, the beam may fail.
2. a shaft of light or radiation travelling in one direction, as from a car’s head-lights . The electron gun produces a stream of fast-moving electrons and focuses them into a narrow beam.
beam sharpening /bim .ɑp.n../ noun the process of making a radio or light beam narrower . Any system employing beam sharpening is vulnerable to side lobe generation at the transmitter.
bear /be./ verb 1. to carry or to hold .
The undercarriage has to bear the weight of the aircraft on the ground. .
rain-bearing cloud a cloud carrying moisture which can fall as rain 2. . to bear something in mind to keep in mind . it should be borne in mind it should be remembered . bearing in mind considering . Bearing in mind that she hadn’t flown for three weeks, the student pilot’s landings were very good. 3. to be able to deal with some-thing without becoming distressed or annoyed . He can’t bear the noise.
(NOTE: bearing – bore – borne) . he can’t bear the heat the heat is too much for him
bearing /be.r../ noun 1. the angle, measured in a clockwise direction, of a distant point, relative to a reference direction . To plot a position line from the non-directional radio beacon, it is first necessary to convert the relative bearing to a true bearing and then cal-culate the reciprocal. 2. a device con-taining steel balls or needles which allows free rotation of one component around another
Beaufort scale /b.υf.t ske.l/ noun
scale from 1–12 used to refer to the strength of wind . Wind speeds can be estimated by using the Beaufort scale of wind force.
belly flop /beli fl.p/ noun same as belly landing belly landing /beli lnd../ noun
an emergency landing of an aircraft
when the wheels have not come down belt /belt/ noun 1. a long, relatively narrow area . high-pressure belt long narrow area of high pressure . precipi-tation belt a long narrow area of rain, snow or hail . rain belt long narrow area where rain falls . The cirrus cloud can be 900 miles ahead of the surface front with a rain belt as wide as 200 miles. 2. a loop of strong material con-necting two pulleys or wheels, one driv-ing the other
belt-driven /belt dr.v(.)n/ adjec-tive (of a wheel) moved by a belt linked to another wheel which, in turn, is moved by a motor or an engine . Air-craft generators are belt-driven or shaft-driven.