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Journal of Applied Mechanics and Technical Physics

2002 year, number 4

Protective properties of hot-air screens

V. N. Okhitin and S. S. Men'shakov
Bauman Moscow State Technical University, Moscow 107005
Pages: 561-569

Abstract

An analytical and numerical study of
protective properties of hot-air screens
is performed for a plane wave with a
triangular profile. The reduction of the
shock-wave pressure behind the screen is
only observed at temperatures higher a
certain critical value; at lower
temperatures, the pressure is higher
than that in a shock wave traveling in
an isothermal gas. With allowance for
real properties of air, an analytical
relation between the critical
temperature of the hot screen and the
incident-wave intensity is obtained.