Transient buffet loads on wings

The buffet loads occurring during a transient incursion into the buffet regime due either to a gust or a manoeuvre are briefly discussed. Review of the experimental evidence suggests that although there are substantial effects of the rate of change of incidence on the value of CLmax there is no real evidence that buffet boundaries behave in the...

Aircraft behaviour in a vertical gradient of wind velocity

The stability of the phugoid motion of an aircraft in the presence of wind shear is investigated. The effect of the wind shear on the phugoid frequency increases with increasing aircraft speed and can be stabilizing or destabilizing depending on the aircraft orientation relative to the wind shear. The destabilizing effect of wind shear is...

Theoretical study of the rolling response of aircraft to turbulent air

A method is presented for assessing the lateral responses af aircraft to oontinuous turbulence. The method is applied to the study of rolling behaviour in turbulent air of a range of aircraft configurations. It is shown, that it is essential to include the pilots' control in this study. Estimates are given af the aileron angle required to...

On the extraction of stability derivatives from full scale flight data