粉末燃料冲压发动机自维持稳定燃烧试验研究

为了实现粉末燃料冲压发动机的持续稳定工作,采用设计的发动机进行了直连式试验研究.通过试验,验证了粉末燃料供应方式的可行性,获得了燃烧室压强及发动机推力曲线,计算了发动机的燃烧效率.结果表明,利用突扩回流稳定火焰的方法不适用随流性差的金属粉末燃料,钝体火焰稳定器可实现粉末燃料的自维持稳定燃烧,但稳定器周围沉积较多,降低了发动机效率.

Experimental investigation on self-sustaining combustion of powdered metal fuel ramjet

To realize stable combustion in powdered metal fuel ramjets,the experiment research of designed motor was carried out on direct-connect test bed.The feasibility of fuel feed method is demonstrated.The characteristics of pressure,thrust and combuation efficiency were obtained.The result shows that the self-sustaining combustion of powder fuel can be realised by installing flame holder in the chamber.However,the problem of deposition on the wall near the holder is severe,which results in the performance loss ...