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旋翼機飛行手冊 ROTORCRAFT FLYING HANDBOOK

時間：2011-04-05 11:32來源：藍天飛行翻譯 作者：航空 點擊：次

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FLARE—A maneuver accomplished prior to landing to slow down a rotorcraft.
FREE TURBINE—A turboshaft engine with no physical connection between the compressor and power output shaft.
FREEWHEELING UNIT—A component of the transmission or power train that automatically disconnects the main rotor from the engine when the engine stops or slows below the equivalent rotor r.p.m.
FULLY ARTICULATED ROTOR SYSTEM—See articulated rotor system.
GRAVITY—See weight.
GROSS WEIGHT—The sum of the basic empty weight and useful load.
GROUND EFFECT—A usually beneficial influence on rotorcraft performance that occurs while flying close to the ground. It results from a reduction in upwash, downwash, and bladetip vortices, which provide a corresponding decrease in induced drag.
GROUND RESONANCE—Selfexcited vibration occurring whenever the frequency of oscillation of the blades about the lead-lag axis of an articulated rotor becomes the same as the natural frequency of the fuselage.
GYROCOPTER —Trademark applied to gyroplanes designed and produced by the Bensen Aircraft Company.
GYROSCOPIC PRECESSION— An inherent quality of rotating bodies, which causes an applied force to be manifested 90° in the direction of rotation from the point where the force is applied.
HUMAN FACTORS—The study of how people interact with their environment. In the case of general aviation, it is the study of how pilot performance is influenced by such issues as the design of cockpits, the function of the organs of the body, the effects of emotions, and the interaction and communication with other participants in the aviation community, such as other crew members and air traffic control personnel.
 

HUNTING—Movement of a blade with respect to the other blades in the plane of rotation, sometimes called leading or lagging.
INERTIA—The property of matter by which it will remain at rest or in a state of uniform motion in the same direction unless acted upon by some external force.
IN GROUND EFFECT (IGE) HOVER—Hovering close to the surface (usually less than one rotor diameter distance above the surface) under the influence of ground effect.
INDUCED DRAG—That part of the total drag that is created by the production of lift.
INDUCED FLOW—The component of air flowing vertically through the rotor system resulting from the production of lift.
ISOGONIC LINES—Lines on charts that connect points of equal magnetic variation.
KNOT—A unit of speed equal to one nautical mile per hour.
L/DMAX—The maximum ratio between total lift (L) and total drag (D). This point provides the best glide speed. Any deviation from the best glide speed increases drag and reduces the distance you can glide.
LATERIAL VIBRATION—A vibration in which the movement is in a lateral direction, such as imbalance of the main rotor.

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