air-to-ground tv system
61Air well (condenser) — High mass air well of Belgian engineer Achile Knapen in Trans en Provence …
62Air navigation — The principles of air navigation are the same for all aircraft, big or small. Air navigation involves successfully piloting an aircraft from place to place without getting lost, breaking the laws applying to aircraft, or endangering the safety of …
63Ground-coupled heat exchanger — Earth cooling tubes or earth warming tubes (also known as ground coupled heat exchangers) utilize the earth s near constant subterranean temperature to warm or cool air for residential, agricultural or industrial uses. They are often a viable and …
64Air Force Space Command — Infobox Military Unit unit name= Air Force Space Command caption=Emblem of the AFSPC dates= September 1982–Present country= United States branch= Air Force type= Major Command role= Development and operation of military space technologies size=… …
65Air Corps Tactical School — Infobox Military Unit unit name=Air Corps Tactical School caption= dates=1920 1940 country=USA allegiance=United States of America branch=Army Air Corps type= role= size=25 instructors, 50 students command structure= current commander=… …
66Ground delay program — An Air Traffic Control Ground delay program or FAA Flow Control is a traffic flow initiative that is instituted by the Federal Aviation Administration in the United States Air Space System.This program is usually instituted when the following… …
67Air Mail Scandal — The Air Mail Scandal, also known as the Air Mail Fiasco, is the name that the American press of the 1930s gave to the political scandal resulting from a congressional investigation of a meeting (the so called Spoils Conference ) between… …
68Air cycle machine — An air cycle machine (ACM) is the refrigeration unit of the environmental control system used in pressurized turbine powered aircraft. Normally an aircraft has two to three of these machines arranged in a system called a pack . The cooling… …
69Air Force of Zimbabwe — Infobox Military Unit unit name= Air Force of Zimbabwe caption=Flag of the Air Force of Zimbabwe dates= 1980 country= Zimbabwe allegiance= branch= type= role= size= 5,000 personnel (1999) command structure= garrison= garrison label= equipment=… …
70Ground effect vehicle — A ground effect vehicle, wing in ground effect vehicle (WIG), flarecraft, sea skimmer, ekranoplan, or wing in surface effect ship (WISE) is a vehicle that attains level flight near the surface of the Earth, made possible by a cushion of high… …
