air density

air density

[′er ‚den·səd·ē]
(mechanics)
The mass per unit volume of air.

air density

air densityclick for a larger image
The mass per unit of volume of air in terms of weight per unit of volume. The unit for measurement is kilogram per cubic meter (i.e., kg/m3). The illustration shows the values of air density in a standard atmosphere at various altitudes.
References in periodicals archive ?
Air crash investigators said the aircraft was "destroyed", according to agovernment reportwhich ruled wind conditions, air density and the plane's weight were all significant factors in the crash.
304 km circuit can pose physical challenges for the drivers, and downforce problems for the cars due to the low air density.
The VENTUS-X measures air density, wind speed, wind direction, virtual temperature, as well as air pressure and delivers the data in real time.
Although there exist many studies on optimizing blades of other kind of turbo-machinery apparatus [14], however, there is no comprehensive study on pressure, temperature and air density distribution in the casing and applied forces to the impeller in dental handpieces.
Steadily rising temperatures with constant air pressure causes decline in air density.
It was built to test components under the environmental conditions found at an altitude of 70,000ft--temperatures down as low as -65[degrees]C and an air density one-twentieth of that at ground level.
In the renal cortex, renal pelvis, and perirenal region, there is abundant air density and the borders of renal cortex and medulla are lost.
This study extends the research on atmospheric conditions and scoring in sporting events by examining components of air density as it relates to National Football League (NFL) games.
Aiming to predict wind farm power, it is necessary to identify the dependence of the farm gross output on the wind speed, air density, and wind direction, to evaluate the location of plants in the farm, wind and weather parameter prediction discrepancies, the impact of changing external factors, other quantitative and qualitative factors.
This equation also includes an altitude correction factor based on the change in the atmospheric pressure and corresponding change in the air density, which ultimately impacts stack effect.
Understanding why the wing and engine behave as they do has everything to do with air density and, in the case of engine performance, the proportional amount of oxygen ([O.

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