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Page 316 - A form of aircraft heavier than air which has wing surfaces for support in the air, with stabilizing surfaces, rudders for steering, and power plant for propulsion through the air. This term is commonly used in a more restricted sense to refer to airplanes fitted with landing gear suited to operation from the land. If the landing gear...
Page 319 - FLOAT: That portion of the landing gear of an aircraft which provides buoyancy when it is resting on the surface of the water. . FUSELAGE: See Body.
Page 317 - BAROGRAPH: An instrument used to record variations in barometric pressure. In aeronautics the charts on which the records are made are prepared to indicate altitudes directly instead of barometric pressure.
Page 321 - The quality of an aircraft in flight which causes it to return to a condition of equilibrium after its attitude has been changed by meeting some disturbance, eg, a gust.
Page 321 - STATOSCOPE: An instrument to detect the existence of a small rate of ascent or descent, principally used in ballooning. STAY : A wire, rope, or the like used as a tie piece to hold parts together, or to contribute stiffness; for example, the stays of the wing and body trussing. STEP : A break in the form of the bottom of a float.
Page 318 - DRAG : The component parallel to the relative wind of the total force on an aircraft due to the air through which it moves. That part of the drag due to the wings is called "wing resistance" (formerly called "drift"); that due to the rest of the airplane is called "parasite resistance" (formerly called "head resistance").
Page 319 - A rope, chain, wire, or rod attached to an object to guide or steady it, such as guys to wing, tail, or landing gear. HANGAR: A shed for housing balloons or airplanes.
Page 322 - ... for the concentration of basket suspension ropes in captive balloons. SWEEP BACK: The horizontal angle between the lateral axis of an airplane and the entering edge of the main planes. TAIL: The rear portion of an aircraft, to which are usually attached rudders, elevators, stabilizers and fins. TAIL CUPS: The steadying device attached at the rear of certain types of elongated captive balloons.
Page 317 - A small spherical balloon sent aloft, without passengers, but with registering meteorological instruments. BALLOON BED : A mooring place on the ground for a captive balloon. BALLOON CLOTH : The cloth, usually cotton, of which balloon fabrics are made. BALLOON FABRIC : The finished material, usually rubberized, of which balloon envelopes are made. BANK: To incline an airplane laterally — ie, to roll it about the fore and aft axis.