Page:Dictionary of aviation.djvu/161

 DICTIONARY OF AVIATION 137

jet dset n.

jet propulsion, propulsion by means of a jet; a proposed mode of propelling airships by means of a powerfully emitted stream of air, steam, or gaseous products of ex- plosivs.

jettison 'dseti-san n. the action of throwing goods or mate- rial overboard, as in order to lighten a balloon or airship in distress; also, the goods thus thrown out; jetsam.

��kaguan ,ka'gwa:n n. a flying^lemur, colugo, or kubong.

kedge keds intr. warp; move a balloon by means of a rope attacht to an anchor.

keel kiil n. a leng structure or framework of wood or other material extending lengthwise under an airship or kite for purposes of support, rigidity, or equilibration; the keeWike understjucture of a dirigible; an aeroplane fixt in a ver- tical position underneath or in the hinder part of certain monoplanes or other aircraft as an aid in maintaining lat- eral stability.

on an even keel, in a position such that the keel is level or horizontal; in horizontal position : said of an airship.

keel-cloth 'kii},kLe:6 n. a cloth or sail placed longitudinally at the lower part of an airship or keel^kite, to aid in equili- brating or balancing the craft in flight.

keel-kite 'kiil,kait n. a kite, invented by H. H. Clayton, in tuhich a keel is empleyd to aid in equilibration or bal- ancing.

keel-plane 'kiil,pz.een n. a plane or aeroplane serving as a keel in a f lying?machine ; a keel in the form of a plane.

khamsin 'kaemsin n. [also spelt kamsin\ a hot and sometimes pestilential south or southeast wind which blows in Egypt at intervals for a periad of about 50 days in March, April, and May, filling the air with sand from the desert.

kinematic ,kmi'maetik adj. relating to motion.

kinematics ,kmi'maetiks n. the science of motion : distin- guish! from dynamics.

kinetic ki'netik adj. of or pertaining to motion; causing motion; motory. compare static, dynamic, kinematic.

kite kait n.

1. a long^wingd diurnal bird of prey of tjie family Fal- cenidae and subfamily Milvinae; a glede.

2. an apparatus consisting of a light frame with paper or other thin material st^etcht upon it, designed so that it

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