- best lift/drag ratio
- наивыгоднейшее аэродинамическое качество
Englsh-Russian aviation and space dictionary. - M.: Military publishing house USSR Ministry of Defence. edited by M. Murashkevich. 1974.
best lift/drag ratio
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lift/drag ratio — The ratio of the coefficient of lift to the coefficient of drag of an airfoil at various angles of attack. It is a measure of the airfoil’s efficiency. The angle of attack that gives the best lift by drag ratio is the most efficient angle of… … Aviation dictionary
Lift-to-drag ratio — In aerodynamics, the lift to drag ratio, or L/D ratio ( ell over dee in the US, ell dee in the UK), is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher or more favorable L/D… … Wikipedia
Zero-lift drag coefficient — In aerodynamics, the zero lift drag coefficient CD,0 is a dimensionless parameter which relates an aircraft s zero lift drag force to its size, speed, and flying altitude. Mathematically, zero lift drag coefficient is defined as CD,0 = CD − CD,i … Wikipedia
best glide speed — The speed at which the aircraft glides the maximum distance from a given altitude. This speed corresponds to the one that gives the best L/D (lift/drag) ratio. An aircraft with a higher L/D ratio will glide farther than an aircraft with a lower… … Aviation dictionary
Glide ratio — Glide ratio, also called, Lift to drag ratio, glide number, or finesse, is an aviation term that refers to the distance an aircraft will move forward for any given amount of lost altitude (the cotangent of the downward angle). Alternatively it is … Wikipedia
Lift-induced drag — In aerodynamics, lift induced drag, induced drag, vortex drag, or sometimes drag due to lift, is a drag force that occurs whenever a moving object redirects the airflow coming at it. This drag force occurs in airplanes due to wings or a lifting… … Wikipedia
Powered hang glider — A foot launched powered hang glider (FLPHG), also called powered harness, nanolight or hangmotor, is a powered hang glider harness with a motor and propeller in pusher configuration. An ordinary hang glider is used for its wing and control frame … Wikipedia
Kite types — Colorful delta wing kite Kites are tethered flying objects which fly by using aerodynamic lift, requiring wind, (or towing), for generation of airflow over the lifting surfaces. Contents 1 Kite … Wikipedia
Flight — is the process by which an object achieves sustained movement either through the air (or movement beyond earth s atmosphere, in the case of spaceflight) by aerodynamically generating lift, propulsive thrust or aerostatically using… … Wikipedia
gliding speed — The speed at which an aircraft glides. It must glide at the angle of attack at which the lift/drag (L/D) ratio is maximized to obtain the best glide angle and the maximum gliding distance. The best gliding speed corresponds to this angle of… … Aviation dictionary
optimum angle of attack — That which gives the best lift/drag (L/D) value and, thus, the highest cruise efficiency. See lift/drag ratio … Aviation dictionary
