Page:Dictionary of aviation.djvu/37

 DICTIONARY OF AVIATION 13

hinged wingstip in an aeroplane for maintaining lateral

balance; a stabilizingsplane ; a balancing^plane. aileron-work 'ee-li-zen,wB:zk n. work executed by an aero-

planist by means of ailerons; balancmg*work done by the

aid of mdependently^moving wing^tips. aileroon ,ee-li'zoun n. same meaning as aileron. air e:z n.

1. the transparent, colorless, gaseous substance which en- velops the earth;- also, occasionally, any particular portion or region of the atmosfere : as, to sail the *airs.

inflammable air, hydrogen gas.

open air, the unconfined space outside bildings, etc. ex- posed to the wether.

take the a*r t start off to fly or float in the air, as an aeroplane when leaving the ground; begin flight; take to the air.

take to the air, same meaning as take the air.

2. the whole bedy of the air surrounding, or above the surface ef, the earth; the (apparently) free space above our heds; the atmosfere.

high air, the open (higher) air; the highway of the airy regions; that part of the air which is net within the juris- diction of any nation.

upper air, the upper or higher regions of the air or atmos- fere; the higher atmosfere.

3. a special state or condition of the atmosfere; wether, climate : as, night *air, one's nativ *air.

4. air in motion; a breeze or light wind; a current, or draft; as, there is no *air to speak of tonight.

light air, an air or breeze (numberd i in Beaufort's scale) having a velocity of about 1.7 meters per second. air e:z adj. ef or pertaining to the air; also, used in the air; as, an *air propeller.

air liner, a liner or passenger^ship of the air; an airship supposed to make regular pemt?to?peint tjips; an aerial liner.

air motion, the motion of the air; the mode of movement of the currents of the atmosfere.

air power, same meaning as airzpower.

air propeller, same meaning as airtpropeller. air-bag 'e:z,baeg n.

1. a bag or secondary balloon containing air and carried inside the gasbag or gas^vessel of a balloon or airship, or an air-space in or between the parts of a balloon^envelop, for maintaining the shape of the main envelop or for regu- lating ascent and descent.

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