drag rise

The sudden in-crease in drag or the formation of a shock wave.

Aviation dictionary. 2014.

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  • critical 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 …   Aviation dictionary

  • compressibility drag rise Mach number — That Mach number (beyond critical Mach number) in which the coefficient of drag increases by 0.005. It is the limit of the normal economic operation of the aircraft. Drag coefficient behavior at high showing critical mach number and… …   Aviation dictionary

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  • drag divergence Mach number — The Mach number at which there is a sudden rise in wing drag as a result of the formation of shock waves. Buffet may take place and control difficulty may occur at this Mach number …   Aviation dictionary

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