air speed


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Related to air speed: ground speed, Calibrated airspeed, True air speed, Calibrated Air Speed, Air speed indicator

air speed

The speed of an aircraft relative to its surrounding air mass. The term air speed can mean any one of the following: indicated air speed, calibrated air speed, equivalent air speed, and true air speed. Indicated air speed or IAS is the uncorrected reading obtained from the air speed indicator. This is the speed used in pilot/controller communications under the general term air speed. Calibrated air speed, or CAS, is the aircraft relative to its surrounding air mass. Equivalent air speed, or EAS, is the calibrated air speed corrected for compressibility-of-air error. True air speed, or TAS, is the equivalent air speed corrected for density altitude (i.e., variation in pressure and temperature). True air speed is used in flight planning and the en route portion of flight. True air speed is not shortened to “air speed” in pilot/controller communications.
References in periodicals archive ?
The draft temperature is a function of the local temperature difference from the mean temperature of the occupied zone and the local air speed difference from 30 [ft/min] (0.
The flow patterns obtained from the CFD simulations in the single-person room test cases are shown in Figures 9-11, with a comparison of air speed distributions in the measurement plane at the 1.
If the vertical air speed component is close to zero, the artificial neural network-based identification algorithm enters a zone of uncertainty.
If Rednecked and Horned grebes show a similar pattern, the expected increase in air speed between arriving and departing birds would approximate 5%, which is much less than we found in early versus late fall samples.
Air speed is also a more powerful 350km/h, while the variable speed facility offers greater control in both blower and vacuum modes.
The basic factors determining air speed close to the window are the height of the cold surface and the temperature difference between the surface and the air in the room.
lambda] speed modulus--ratio between laminar turbine speed and air speed through turbine 1.
At the completion of each simulation, a flow pattern can be monitored visually and an average air speed around pins can be determined.
He led 19 Lancaster bombers on the mission to drop bombs from 60ft above the water at an air speed of 220mph.
New engines with larger fans also slow exhaust air speed, for even more noise reduction.
En route to the initial approach fix at 10,000 feet Mean Sea Level, while dumping gas and flying radar trail in the weather at night, the indicated airspeed on both the heads up display and electronic altitude display indicator decreased to 14 knots indicated air speed.