Page:Dictionary of aviation.djvu/89

 DICTIONARY OF AVIATION 65

an elongated elliptic or parabolic orbit, resembling a bright star surrounded by a misty light and having a train of light, or tail, sometimes of enormous length, and directed away from the sun.

compass 'kAmpss n. an instrument consisting of a magni- tized needle turning freely, horizontally, on a pivot, used for determining the magnetic meridian or one's direction or position with respect thereto; a mariner's compass; a seaman's compass.

compensating-rope 'kemp9n-see-tirj,zoop n. one of the ropes inside the gasbag of a dirigible balloon, such as the Parseval, which serv as compensators betiueen the ballonets and the gas-valv.

compensator 'kempan^eta;? n. a relativly small balloon or gasbag placed below the main gasbag to compensate or pre- vent loss of gas during the voyage.

compression k3m'pse$9n n. the action of compressing; con- densation by pressure.

compression side, the side or surface of a wing, aero- plane, propeller^blade, or other aerofoil, which effects the compression of, or acts against, the air : the epposit of rarefaction side.

concave ,ken'keev, (assumptivly) 'ken,kev adj. having the outline or surface curvd like the interior of a circle or sfere : the reverse of convex; hollow; presenting a hollow surface to view; incurvated.

concave 'kon,kev n. the arch or vault of heven; the hevens; as, the blue *concave.

concaved 'kon,kevd adj. made or fashiond in a concave form; concave.

concavo-concave ken,kee-vo-ken'keev, (assumptivly} kon- ,kee-vo'kn-kev adj. concave on both sides.

concavo-convex kon,kee-vo-ken'veks, (assumptivly} kon- ,kee-vo'ken-veks adj. concave on one side and convex on the other, and thinnest in the center.

concentrating-hoop / kons3n-tetirj,houp n. the hoop or ring of a balloon, upon which the guy-ropes or cordage are concentrated or brought together, and to tuhich they are at- tacht; the concentrating^nng.

concentrating-ring 'konsan-tretin^irj n. the ring of a bal- loon upon which the guy^ropes are concentrated and to which they are attacht; the concentjating^hoop.

condenser kan'denser n. [also spelt condensor] any device or apparatus for condensing or compressing air or other gases or vapors, or for reducing gases to a liquid or solid form; a pneumatic force-pump; a gas-condenser; a cham-

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