Development of a Rolling Maneuver Spectrum from Statistical Flight Loads Data
AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH
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Absence of clearly defined antisymmetrical fatigue load spectra in military specifications has resulted in questions regarding the validity of rolling maneuver spectra applied to the B-1 design. In response, multiparameter flight loads data measured on the F-5A and F105D aircraft were evaluated and used in the development of a probability of exceedance curve for the normalized wing tip helix angle. The normalized probability curve can be used in conjunction with any specified normal load factor spectrum and the airplanes maximum pb2V capabilities to determine the occurrence rate of rolling velocity peaks. The approach should provide at least a first order estimate of possible rolling velocity spectra which can be applied in aircraft fatigue design for antisymmetrical maneuver conditions.
- Attack and Fighter Aircraft