Accession Number : AD0866614

Title :   Correlation and Evaluation of CH-47A Flight Spectra Data from Combat Operations in Vietnam

Descriptive Note : Final rept.,

Corporate Author : KAMAN AEROSPACE CORP BLOOMFIELD CT

Personal Author(s) : Porterfield, John D ; Maloney, Paul F

PDF Url : AD0866614

Report Date : Nov 1969

Pagination or Media Count : 82

Abstract : The report evaluates flight spectra data for three different mission assignments flown by CH-47A helicopters. Two of these missions were flown in Southeast Asia under actual combat conditions: one as an armed/armored helicopter and one as a cargo/transport helicopter. The third mission was flown as a cargo/transport helicopter during simulated maneuvers in the United States. The CH-47A flight spectra data for these missions were compared to each other; to flight spectra data obtained from other helicopters; to the CAM-6 spectrum; and to a fatigue substantiation spectrum used initially to establish component fatigue lives for the CH-47A. Evaluations and correlations of these spectra are presented; and where variations occur, their probable cause and possible effects on fatigue life are discussed.

Descriptors :   *HELICOPTERS, ARMY OPERATIONS, CORRELATION TECHNIQUES, FLIGHT, GUST LOADS, LOADS(FORCES), VIETNAM

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE