To the problem of heat accumulating substance choice for the solar thermal propulsion
Aerospace propulsion engineering
Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
AbstractThe possibilities of the simplification of the solar thermal propulsion creation, and the possibilities of the simplification of the solar concentrator orientation conditions are considered. In such engine the solar radiation absorber and the thermal energy storage carried out jointly as the unified system, and contains lithium hydride as heat accumulating substance. The solar radiation absorbing surface of this system created from the material with real spectral-selective properties. The heating temperature of such surface can corresponds to the lithium hydride melting temperature. The required accuracy of the solar concentrator can be reduced, therefore the permissible angle of concentrator-absorber system disorientation from the direction to the Sun can be increased.