- Industry: Government
- Number of terms: 35337
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The rating of antidetonation characteristics of a reciprocating engine fuel that is better than the high rating reference fuel, iso-octane. Performance numbers are greater than 100.
Industry:Aviation
The ratio of the absolute viscosity of a fluid to its density. Kinematic viscosity is measured in centistokes.
Industry:Aviation
The ratio of the amount of useful work produced by a heat engine, to the amount of work that could be done by all of the heat energy available in the fuel burned.
Industry:Aviation
The ratio of the fan-discharge pressure to the fan inlet pressure.
Industry:Aviation
The ratio of the mass of air moved by the fan to the mass of air moved by the core engine.
Industry:Aviation
The ratio of the pressure of the air at the discharge of a turbine engine compressor to the pressure of the air at its inlet.
Industry:Aviation
The ratio of the speed of an object through the air to the speed of sound under the same atmospheric conditions. An object traveling at the speed of sound is traveling at Mach one (M1.0).
Industry:Aviation
The ratio of the turbine discharge total pressure to the compressor inlet total pressure. EPR is normally used as the parameter to determine the amount of thrust an axial-flow turbojet or turbofan engine is producing.
Industry:Aviation
The ratio of the volume of a cylinder of a reciprocating engine with the piston at the bottom of its stroke engine to the volume of the cylinder with the piston at the top of its stroke.
Industry:Aviation
The ratio of the volume of the charge of the fuel and air inside the cylinder of a reciprocating engine to the total physical volume of the cylinder.
Industry:Aviation
