The method for providing the contact surface of gases to study
the Richtmyer–Meshkov and Rayleigh–Taylor instabilities
development with the P-membrane being destroyed forcedly is
proposed. At the membrane destruction, the plane turbulent layer
determining the initial and boundary conditions for the gravitational
instabilities development is formed. For the shock tube OSA, the
initial stage of the development of the turbulent layer from the
P-membrane, after the interaction with a stationary shock
wave (Ms = 1.81) has been investigated.