compressibility of air

compressibility of air
The idea that air acts as an incompressible fluid at subsonic flow rates.

Aviation dictionary. 2014.

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  • Compressibility factor — Thermodynamics …   Wikipedia

  • Compressibility — This article is about thermodynamics and fluid mechanics. For other uses, see Compression (disambiguation). Incompressibility redirects here. For the property of vector fields, see Solenoidal vector field. Thermodynamics …   Wikipedia

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  • air spring — Mach. a springlike support utilizing the compressibility of air confined behind a piston in a cylinder. * * * ▪ mechanics       load carrying component of an air suspension system used on machines, automobiles, and buses. A system used on buses… …   Universalium

  • air spring — noun a mechanical device using confined air to absorb the shock of motion • Syn: ↑air cushion • Hypernyms: ↑shock absorber, ↑shock, ↑cushion * * * Mach. a springlike support utilizing the compressibility of air confined behind a piston in a… …   Useful english dictionary

  • air temperature — The various types of temperatures include: i. Indicated air temperature (IAT). The uncorrected reading from the free air temperature gauge. ii. Basic air temperature (BAT). The indicated air temperature corrected for instrument error. iii. True… …   Aviation dictionary

  • compressibility error — An error in the airspeed indicator, which presumes that the air is incompressible. However, air is compressible and the higher the speed, the higher pressure it will indicate. An ASI (airspeed indicator) overreads because of the compressibility… …   Aviation dictionary

  • compressibility — A general term covering the effects resulting from the fact that the density of air, and gases in general, varies with pressure and hence with wind speed. The effects become apparent in the changes in the values of lift and drag coefficients of a …   Aviation dictionary

  • compressibility drag — A parasite drag caused by the extraordinary compression of air ahead of an aircraft at high speeds. An aircraft not designed for sonic flights is especially prone to encounter this phenomenon as it approaches the speed of flight. The effects are… …   Aviation dictionary

  • compressibility effect — noun : any of the effects (as abrupt changes in control characteristics) that result from changes in the flow field about an airplane when the velocity at some point in the field reaches the local speed of sound and the air ceases to behave as an …   Useful english dictionary

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