Nomenclature for Aeronautics
The National Advisory Committee for Aeronautics has just issued a preprint of Report No. 25 of its fourth annual report which contains the Nomenclature for Aeronautics adopted by the committee at its annual meeting, Oct. 10, 1918. Report No. 25, which supersedes Report No. 15 of the third annual report (1917), differs from the latter by the substitution of the terms airship for dirigible, and fuselage for airplane body, and the definition of the following newly added terms: attitude, angle of banks, ceiling, crosswind force, droop, hull of an airship, lift of an airship, loop, marouflage, overhang, pancake, pitch of a propeller, angle of pitch, plane, pressure nozzle, rate of climb, right-hand engine, righting moment, roll, rudder bar, speed (air and ground), spin, tandem (planes), Venturi tube, wash in, zero lift line.