air speed


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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 ?
Experimental and numerical results of the rivulet thickness variations versus time with the air speed of 20 m/s are plotted in Fig.
When computing ADPI, "draft temperatures" are calculated from temperature and air speed measurements at many locations in the "occupied zone.
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.
The input data set consists of the data from the simulation of the flight dynamics: vertical air speed, horizontal air speed, aircraft angle of attack, and aircraft flight angle.
Air speed and volume can also be altered by changing the sprayer fan speed.
low wave regime--the air flux increase the turbine spinning; pale angle changes depending on air speed and loading torque;
Method B employed a CFD package, Phoenics-VR, to estimate the average air speed around pins.
The HADS gives pilots and copilots readings on air speed and directional control.
The operator can adjust air speed according to canopy growth, and if near neighboring properties, drift-sensitive crops, roads or water courses.
That is forced air speed measurements are less than normal airspeed measurements in some diseases.