Aerodynamic/control coupling optimization of reentry vehicle under wide speed range

Abstract

The high-speed reentry vehicle operates across a broad range of speeds and spatial domains, where optimal aerodynamic shapes for different speeds are contradictory. This makes it challenging for a single-Mach optimization design to meet aerodynamic performance requirements throughout the vehicle’s flight envelope. Additionally, the strong coupling between aerodynamics and control adds complexity, as fluctuations in aerodynamic parameters due to speed variations complicate control system design. To address these challenges, this study proposes an aerodynamic/control coupling optimization design approach. This method, based on aerodynamic optimization principles, incorporates active control technology, treating aerodynamic layout and control system design as primary components during the conceptual design phase. By integrating the design and evaluation of aerodynamics and control, the approach aims to reduce design iterations and enhance overall flight performance. The comprehensive design of the rotary reentry vehicle, using this optimization strategy, effectively balances performance at supersonic and hypersonic speeds. The results show that the integrated design model meets aerodynamic and control performance requirements over a broader range of Mach numbers, preventing performance degradation due to deviations from the design Mach number, and providing a practical solution for high-speed reentry vehicle design.