摘要
为了掌握煤油／空气PDE气动阈的设计方法，选择合理结构的气动阀满足较高工作频率煤油／空气PDE要求，设计加工了3种不同结构型式的气动阀；研究了煤油／空气PDE的气动阀设计方法、气动阀的工作机理。以煤油为燃料、空气为氧化剂，在安装不同结构气动阈的煤油／空气PDE的爆震管内进行爆震试验，根据获得爆震波压力特性判断气动阀性能优劣。研究结果表明：在充填速度为25-35m／s条件下，以旋流为主的气动阀PDE爆震波压力较高；在充填速度为60-90m／s条件下，以直流为主加部分旋流的气动阀PDE爆震波压力较高。研究结果对煤油／空气PDE原理样机的研制具有指导意义。
To master the design methods of the aerovalve of the pulse detonation engine （PDE） for pulse detonation engine operated at the high frequency, three aerovalves are designed and processed. With filling liquid kerosene and the heated air into the tube as detonahle mixture, multi-cycle detonation experi- ment of the pulse detonation engine with different aerovalves is carried out. With properties of the deto-nation wave pressure, the aerovalve performance is estimated. Results show that the detonation wave pressure of PDE with double swirl aerovalve is quite high when filling tube speeds are 25-35 m/s, and the detonation wave pressure of PDE with the straight flow aerovalve is higher when filling tube speeds are 60-90 m/s. Results are important for developing kerosene/air pulse detonation engines.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2008年第3期279-283,共5页
Journal of Nanjing University of Aeronautics & Astronautics
基金
南京航空航天大学科研创新基金资助项目
关键词
脉冲爆震发动机
爆震
气动阈
充填速度
pulse detonation engine
detonation
aerovalve
filling tube speed
