Study of the Heating of a Hypersonic Vehicle Launched by a Lorentz Rail Accelerator
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Abstract
This document presents the results of a coupled fluid-thermal simulation along the trajectory of a hypersonic vehicle for different surface coatings. This kind of simulations will become more and more important in a reliable design of the thicknesses of the Thermal Protection System (TPS) of hypersonic vehicles. The considered vehicle is a suborbital payload carrier launched by a Lorentz Rail Accelerator (LRA). It is non-propelled and reaches an altitude of 115 km, where it leaves its payload. To reach the desired altitude, the payload carrier has to be accelerated at the Rail reaching a Mach number of 6,2 at its outlet. To determine the temperature evolution of the vehicle, the accurate simulation of the first instants of the trajectory is of outmost importance. Therefore, a coupled simulation provides a better estimation of the maximal temperature, necessary to dimension the TPS.
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