Flow self-adaptive adjusting method for multi-duct spray pipe

The invention discloses a flow self-adaptive adjusting method for a multi-duct spray pipe, and relates to the technical field of enhanced mixing and flow adjusting of multi-duct aero-engines. Based on the common working condition characteristics of a multi-duct aero-engine, a flow self-adaptive adjusting device between every two adjacent ducts is designed. The flow under different working conditions can be adaptively adjusted under the fixed geometric condition, the targets of low-altitude and high-altitude efficient propulsion and high-altitude enhanced mixing are considered, and meanwhile, the increase of the weight, the size and the cost caused by a complex active control system is reduced; therefore, the requirements of the aircraft on flow regulation, high-efficiency low-resistance flight, cost reduction and use maintainability improvement are met. 本发明公开了一种针对多涵道喷管的流量自适应调节方法，涉及多涵道航空发动机的强化掺混和流量调节技术领域。基于多涵道航空发动机常见的工况特点，设计了相邻两涵道之间的流量自适应调节装置。可以实现定几何条件下对不同工况的流量进行自适应调节，兼顾了低空、高空高效推进和高空强化掺混的目标，同时也减少了复杂的主动控制系统带来的重