Page:Dictionary of aviation.djvu/142

 118 DICTIONARY OF AVIATION

descends too close to the earth or ground^surface the rope will, by resting en or dragging along the ground, relieve the balloon of weight, and cause it to rise, thus guiding it auto- matically or tending to keep it at a uniform distance from the earth; 'the rope'; a drag^dope; a balancer.

guiding-plane 'gai-dirj,pLeen n. a plane or aeroplane serv- ing to guide or direct the course of a flying^machine ; a rudder.

gull gAl n. any leng^wingd, web^footed bird of the family Laridae, such as of the genus Larus; also, popularly, a tern, a skua.

gust gAst n. a sudden violent rush or blast of wind.

gust-swept 'gAst,swept adj. swept by gusts of wind; fit- fully windy; windsswept; squally.

gusty "gAsti adj. (of wind) blowing in gusts or violent blasts; (of wether) markt by gusts or squalls of wind; fitfully windy or stormy.

guy gai n. [plural guys'] a rope or wire used to guide or stedy any part of a balloon or airship ; a guy^rope ; a guy^wire.

guy gai tr. fasten with a guy or guys; make secure by means of the guy^rope or guy^wire.

guy-line 'gai,lam n. a line or cord used to guide or stedy a kite.

guy-rope 'gai,zoop n. a rope used as a guy; a stedying^rope ; specifically, one of the ropes extending between the basket or car of a balloon or airship and the netting or envelop above.

guy-wire 'gai,waiz n. one of the wires forming or serving as a guy or stay in an airship; a stedying^wire.

gyrate 'dsai^et, /isai'zeet intr. move in a gyre, circle, spi- ral, or helix; revolv, usually round a fixt point or en an axis; rotate, whirl, circle, wheel.

gyrating 'dsai^etirj, /Isai'zee-tirj n. the action of birds in soaring in a spiral course; circling.

gyration /IsaiVee-Jan n. the action or process of gyrating; motion in a circle, spiral, or helix; revolution round a fixt center or axis; turning round, wheeling, whirling; also, an instance of any of these : as, a Helmholtz surface of ^gy- ration.

Dove's law of gyration, same meaning as Dove's law of the rotation of the winds, see under wind.

gyration in storm areas, the mode of gyration or rotation of the winds in the areas coverd by storms as formulated by Ferrel ; the anticlockwise cyclonic movements occurring in the northern hemisfere, and the clockwise cyclonic movements occurring in the southern hemisfere.

�� �