Accession Number : AD0684036

Title :   HELICOPTER ROTOR NOISE ANALYSIS.

Descriptive Note : Independent research and development technical rept. Dec 66-Mar 69,

Corporate Author : BOEING CO MORTON PA VERTOL DIV

Personal Author(s) : Schaeffer,E. G.

Report Date : 22 DEC 1966

Pagination or Media Count : 65

Abstract : A preliminary analytical method for predicting whether rotor blade bang will occur is described and correlated with data from tandem rotor helicopters. The operating limits which will cause banging of a single rotor are discussed. (Author)

Descriptors :   (*HELICOPTER ROTORS, *PROPELLER NOISE), ROTOR BLADES(ROTARY WINGS), HELICOPTERS, MATHEMATICAL PREDICTION, VORTICES

Subject Categories : Helicopters
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE