Research on the Joint-optimization of Launch Vehicle's Electromagnetic Pulse Protection and Conceptual Parameters Design

This paper builds the model of EMP disturbing the sensitive equipment in launch vehicle, including conducted electromagnetic interference and radiated electromagnetic interference, based on the minimum take-off mass of launch vehicle. This paper mends trajectory equation of launch vehicle and then the launch vehicle's EMP protection can be studied integrated in launch vehicle's conceptual design. Then, EMP protection of typical electric system in launch vehicle and the general parameters are joint-optimization designed. Simulation results show that if the sensitive equipment in launch vehicle can resist 0.2 ampere conduct current of EMP interference and 70 dB radiated interference of EMP either, the range loss of launch vehicle will reach 12.5 percent when its engine is not variable.