drag angle
21critical drag rise Mach number — The free stream Mach number at which because of shock wave, the coefficient of drag for a given angle of attack increases rapidly. This increase in drag value should be at least 0.005. Also called a compressibility drag rise Mach number …
22stalling angle — The angle of attack at which the flow of air over the wing begins to separate from the wing surface, resulting in a significant reduction in the lift and an increase in the drag. The lift coefficient of an airfoil is maximum at this angle and… …
23critical angle — n. 1. Optics the smallest possible angle of incidence at which light rays are totally reflected 2. Aeron. that angle of attack at which the flow of air around an airfoil suddenly changes, with an abrupt reduction in lift and an increase of drag:… …
24Darrell Russell (drag racer) — Darrell Russell (September 20, 1968 – June 27, 2004) was an NHRA drag racer. He was the 2001 NHRA Rookie Of The Year. At the time, he was only the third driver to win in his Professional debut. Before becoming a driver in NHRA s Professional… …
25critical angle — noun a) The smallest angle of incidence for which light is totally reflected from a boundary between one medium and a less refractive one b) The smallest angle of attack of an airfoil at which lift suddenly decreases and drag suddenly increases …
26critical angle — crit′ical an′gle n. 1) opt the minimum angle of incidence beyond which total internal reflection occurs for light traveling from a medium of higher to one of lower index of refraction 2) aer. the angle of attack at which a sudden change in… …
27critical angle — /ˌkrɪtɪkəl ˈæŋgəl/ (say .kritikuhl angguhl) noun 1. Optics the limiting angle of incidence for total internal reflection. 2. the angle of attack at which there is a sudden change in the airflow round an aerofoil with subsequent decrease in lift… …
28optimum angle of attack — That which gives the best lift/drag (L/D) value and, thus, the highest cruise efficiency. See lift/drag ratio …
29zero-lift drag — The drag when an aircraft is flying at the zero lift angle of attack …
30form drag — Physics. the portion of the resisting force encountered by a body moving through a fluid that is due to the irregularity of shape of the body, reducible to a minimum by streamlining. [1930 35] * * * n. Aeronautics that part of the drag on an… …
