Theoretical analysis of a gust alleviator used on a Lancaster aircraft and comparison with experiment

Abstract

A theoretical analysis of a gust alleviator using the spectral technique is made and the results compared with experiment. The comparison is made in terms of the frequency of occurrence of normal accelerations at the aircraft e.g. The estimated loss of alleviator effectiveness with increasing magnitude of the normal acceleration and with increasing static alleviation is in close agreement with the observed phenomena, which the single-gust approach had failed to explain. The importance of turbulence of wavelengths longer than 1000 ft is emphasised.