fly-past /fla. pɑst/ noun the flight of an aircraft or group of aircraft over a place as a spectacle for people on the ground
FMS /ef em es/ abbreviation flight
management system foam /f.υm/ noun 1. a mass of bub-bles of air or gas in a liquid film . foam fire extinguishers . Airport fire crews covered the fuselage with foam to con-trol the fire. 2. any of various light, porous, semi-rigid or spongy materials used for thermal insulation or shock absorption . Polyurethane foam is used in packaging.
focal point /f.υk(.)l p..nt/ noun
same as focus focus /f.υk.s/ noun the point at which rays of light or other radiation converge . The focus of a lens is also called the focal point. (NOTE: The plural form is foci. /f.υsa./) . to come into focus to become clearer as through the viewfinder of a camera . verb 1. to make things such as light rays converge on a central point . A parabolic reflec-tor focuses the transmission into a nar-row beam. 2. to give an object or image a clear outline or detail by adjustment of an optical device . Focus the micro-scope in order to make the image easier to see. 3. to direct toward a particular point or purpose . The crew focused all their attention on finding a solution to the problem.
fog /f./ noun condensed water vapour in cloud-like masses lying close to the ground and limiting visibility .
f.hn 100
When visibility is less than 1,000 m owing to suspended water droplets in the atmosphere, the condition is known as fog. . evaporation fog steam fog . Evaporation fog is usually confined to water surfaces and adjacent areas of land.
f.hn /fn/ noun a warm dry wind that blows down the lee side of a mountain, particularly in the Alps (NOTE: The word is also written foehn.)
foil /f..l/ noun same as aerofoil
foot /fυt/ noun a unit of length in the US and British Imperial Systems equal to 12 inches or 30.48 centimetres. Sym-bol ft (NOTE: The plural form is feet; foot is usually written ft or ’ after figures: 10ft or 10’.)
foot-pound /fυt paυnd/ noun the
ability to lift a one pound weight a dis-tance of one foot. Abbreviation ft-lb
force /f.s/ noun 1. the capacity to do work or cause physical change . the force of an explosion 2. power used against a resistance . In small aerobatic aircraft, considerable force is needed on the control column when performing high-speed manoeuvres. 3. a vector quantity that produces an acceleration of a body in the direction of its applica-tion (NOTE: We say centrifugal force, but the force of gravity.) . the force of gravity the natural force of attraction which pulls bodies towards each other and which pulls objects on Earth towards its centre . verb 1. to use power against resistance . Because of distor-tion to the airframe, the pilot had to force the door open in order to exit the aircraft. 2. . to force someone to do something to use physical or psycho-logical power to make somebody do something they otherwise would not do
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