Part I. The report presents the theoretical calculations of gust alleviation factor made for rigid aircraft and with one degree of freedom only (i.e., vertical motion). It is shown that for average gust lengths and for ...

In simple harmonic oscillation of the helicopter with hinged blades, the tip-path plane is tilted with respect to the shaft in the plane of oscillation and in the plane perpendicular to it. The angles of tilt can be expressed ...

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 ...