Report of work done in determining structure which will give maximum amount of sound insulation in airplane cabin for minimum weight; various small structures tested at frequencies varying from 150 to 1120 cycles per sec. to determine best structure available within allowable limit of weight; test night made in treated cabin to determine how satisfactory structure was under operating conditions; noise in cabin was about same as in railway coach in motion. (See also Aviation Eng., vol. 11, no. 6, June 1929, p. 28, and Aviation, vol. 27, no. 21, Nov. 23, 1929, pp. 1021-1022, 2 figs.)
Soundproofing of airplane cabins
U.S. Bur Standards -- Jl. Research
1929
12 pages
5 Figs., partly on supp. plate
Aufsatz (Zeitschrift)
Englisch
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