On a perspective of MHD technology in aerospace applications

Abstract

Utilization of MHD conversion of momentum and energy in hypervelocity application is discussed in this paper. Efficiency of MHD conversion is defined by the level of electrical conductivity of the media, applied magnetic field induction, and velocity. Under hypervelocity conditions in upper atmosphere at altitude of 60-80km air can be ionized hi shock wave significantly to provide high electrical conductivity in the hypersonic shock layer near spaceor air vehicle. This ionized region can be used to create strong MHD interaction modifying the external flow parameters. Such a modification can be used to optimize the dynamics and heat flux strength on die vehicle surface and to create the integral drag and lift forces as well as the controlling moment MHD energy conversion can be useful to optimize a hypersonic scramjet operation by-passing some flow enthalpy before the combustion. Beside of these a MHD electrical power generator can be used for continues as well as pulsed (emergency) electrical power production utilizing external flow. An MHD control of the thrust is considered to optimize the performance of a transatmospheric rocket engine.