An approximate analytical method is developed for the solution of a fourth order, non-linear equation of motion from which the frequency and amplitude of a sustained oscillation may be derived. The criterion for the existence ...

Available data on the pressure distribution around a hemisphere at supersonic speeds are reviewed with special reference to the differential pressure. A modified form of pressure coefficient is used which collapses the ...

A modified form of the approximate method developed by Kryloff and Bogoliuboff is derived and applied to particular cases with a large frequency dependence on amplitude. The results suggest that some relaxation of the ...