A 219-hour statistical sample of data was collected from UH-1B helicopters performing normal field mission assignments covering a period of 3 months. The parameters monitored were: airspeed, altitude, outside air temperature, acceleration at the aircraft center of gravity, main rotor rpm, collective stick position, longitudinal cyclic stick position, and engine torque. Supplementary information for each flight included barometric pressure, type of mission, and aircraft gross weight. The data are presented as frequency-of-occurrence histograms, exceedance curves, and gust spectra. These figures and curves may be used to establish design criteria for new helicopters and for modification of design criteria for existing aircraft. (Author)
UH-1b Helicopter Flight Loads Investigation Program
1966
2 pages
Report
No indication
English
Flight Load Investigation of Helicopter External Loads
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