Numerical and experimental analysis of grid fin aerodynamic performance for China's next generation LOX/LCH4 reusable launch vehicle ZQ-3

Key Points

• Grid fin aerodynamic performance was significantly analyzed through both numerical and experimental methods, indicating promising efficiency.
• Key metrics from testing show an optimal lift-to-drag ratio at various angles of attack, which enhances overall vehicle performance.
• Numerical analysis compared computational fluid dynamics simulations with experimental wind tunnel results for validation.
• Understanding grid fin effects on aerodynamics may lead to better designs in future LOX/LCH4 launch vehicles.