Compressibility
91Calibrated airspeed — (CAS) is the speed shown by a conventional airspeed indicator after correction for instrument error and position error. Most EFIS diplays also show CAS. At high speeds and altitudes, calibrated airspeed is further corrected for compressibility… …
92Magnetic reconnection — is a physical process in highly conducting plasmas in which the magnetic topology is rearranged and magnetic energy is converted to kinetic energy, thermal energy, and particle acceleration. Magnetic reconnection occurs on timescales intermediate …
93Real gas — Thermodynamics …
94Critical Mach number — Transonic flow patterns on an aircraft wing showing the effects at critical mach. In aerodynamics, the critical Mach number (Mcr) of an aircraft is the lowest Mach number at which the airflow over any part of the aircraft reaches the speed of… …
95Specific storage — (Ss), storativity (S), specific yield (Sy) and specific capacity are material physical properties that characterize the capacity of an aquifer to release groundwater from storage in response to a decline in hydraulic head. For that reason they… …
96Drag (physics) — Shape and flow Form drag Skin friction 0% 100% 10% 90% …
97Acentric factor — In thermodynamics, the acentric factor omega is a factor originally used by K.S. Pitzer and coworkers as an expression in an equation for the compressibility factor. It is defined asomega = log {10} (P^{ m{sat r) 1 { m at } T r = 0{.}7.T r stands …
98Sweep theory — is an aeronautical engineering description of the behavior of airflow over a wing when the wing s leading edge encounters the airflow at an oblique angle. The development of sweep theory resulted in the swept wing design used by most modern jet… …
99High-speed flight — In high speed flight the assumptions of incompressibility of the air used in low speed aerodynamics no longer apply. In subsonic aerodynamics, the theory of lift is based upon the forces generated on a body and a moving gas (air) in which it is… …
100Relations between heat capacities — The laws of thermodynamics imply the following relations between the heat capacity at constant volume, C {V}, and the heat capacity at constant pressure, C {P}::C {P} C {V}= V Tfrac{alpha^{2{eta {T,:frac{C {P{C {V=frac{eta {T{eta {S,Here alpha …
