common+air
101Air mass — For other uses, see Air mass (astronomy) and Air mass (solar energy). Different air masses which affect North America, as well as othe …
102Air assault — An Air Assault is a tactical or operational manoeuvre of an infantry unit airlifted by helicopters, usually to fulfil an aerial envelopment role in a larger ground operation plan. The role of the assaulting force is rarely to immediately engage… …
103Air purifier — An air purifier is a device which removes contaminants from air. Air purifiers are commonly marketed as being particularly beneficial to allergy sufferers and asthmatics, and at reducing second hand tobacco smoke. Use of purifiers Dust, pollen,… …
104Air Education and Training Command — Infobox Military Unit unit name=Air Education and Training Command caption=Air Education and Training Command emblem dates= 1 July 1993 Current country= United States allegiance= branch= United States Air Force type= Major Command role= size=… …
105Air Force Officer Training School — This article is about the USAF Officers Training School. For information on the Royal Australian Air Force school, please see Officer Training School RAAF Officer Training School emblem Officer Training School is a United States Air Force… …
106Air handler — An air handling unit; air flow is from the right to left in this case. Some AHU components shown are: 1 Supply duct 2 Fan compartment 3 Vibration isolator ( flex joint ) 4 Heating and/or cooling coil 5 Filter compartment 6 Mixed (recirculated +… …
107Air preheater — An air preheater or air heater is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process. They may be… …
108Air force — An air force, also known in some countries as an air army or historically an army air corps , is in the broadest sense, the national military or armed service that primarily conducts aerial warfare. The term air force may also refer to a tactical …
109air-conditioning — Control of temperature, humidity, purity, and motion of air in an enclosed space, independent of outside conditions. In a self contained air conditioning unit, air is heated in a boiler unit or cooled by being blown across a refrigerant filled… …
110air-cushion machine — ▪ vehicle Introduction also called ground effect machine, or hovercraft, any of the machines characterized by movement in which a significant portion of the weight is supported by forces arising from air pressures developed around the… …
