DICTIONARY OF AVIATION 145
tgack or path of light which are required to complete the course.
larboard 'laizjborzd adj. en that side of an aircraft which is en the left as one faces the bow ; port : the epposit of starboard.
latitude 'laeti,tc.ud n. distance' north or south mesured in degrees along the meridian vertically below the observer, en the surface of the earth; especially, the angular distance (of the plane passing thru any point, place, or position en or above the earth's surface and the center of the earth, perpendicular to the plane of the meridian at that peint) nerth or south from the plane of the equator of the earth; also, a locality as markt by parallels of latitude; in ploral, regions, climes, or parts of the world.
calm latitude, same meaning as region of calms, see under calm.
horse latitudes, same meaning as Calms of Cancer, see under calm.
lattice-girder 'laetis,gB:z-d3? n. [also spelt lattice girder] a latticed girder or beam often used in the framework of aerial vehicles; a compound longitudinal structural support consisting of two horizontal bars connected by vertical and diagonal bars crest so as to resemble lattice-work.
launch lc:nt$ tr. cause to move or slide into the air; start in flight; start; send off: as, *launchAg a kite.
launching-apparatus 'Icrn-tSirj-aeps^ee-tas n. an apparatus with or from which to launch an aerodrome or flymg-ma- chine; a launching-mechanism; a starting-mechanism.
launching- derrick 'lc:n-t$in,dezik n. a derrick or catapult used in launching a flying-machine; a starting-derrick; a pylen.
launching-device 'Icrn-tSin-di/vais n. a device or appara- tus used for launching a flying-machine; a launching-mech- anism; a starting-devicfe.
lannching-ground '}c:n-t$in,gzaond n. a ground or field freni which flying-machines may be launcht into the air or started in flight.
launching-mechanism 'Ic:n-t$in,mek9-niz3m n. a mecha- nism with or from tuhich to launch an aerodrome or flying* machine; a launching-apparatus; a launching-device; a start- ing-apparatus.
launching-platform 'lc:n-t$in,ptset-fe:zm n. a platform, as en the deck of a water-ship, from tuhich flying-machines may be launcht into the air or started in flight.
lannching-rail 'lc:n-t$in,zee} n. a rail or continuous bar,
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