To deal with the problem of thrust trap during the process of turbine/ramjet mode conversion of the turbine based combined cycle(TBCC),the integrated control of turbine/scramjet mode conversion has been studied.The combined power climbing flight trajectory optimization method is used to solve the thrust trap problem that the total thrust of the combined engine cannot meet the acceleration demand of horizontal flight during the modal conversion process.The control variables and state variables are discretized to complete the trajectory optimization.The integrated control strategy is designed to complete the joint adjustment of the angle of attack and the throttle during the mode conversion.The simulation results show that the trajectory optimization method can overcome the thrust trap through a special trajectory design.The integrated protection control method improves the control quality and avoids the adverse effects of the modal conversion process.
Wide-speed-range vehicleTurbine engine/RamjetIntegrated flight/propulsion controlTrajectory optimizationTrajectory tracking control