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 U. S. Bur. of Standards -- Jl. of Research, vol. 2, no. 5, May 1929, pp. 897-908, 5 figs. partly on supp. plate; Aviation, vol. 27, no. 21, Nov. 23, 1929, pp. 1021-1022, 2 figs.)
Soundproofing of airplane cabins
Aviation Eng
Aviation Engineering ; 11 , n 6
1929
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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