To several different type resonant tube of the standing wave thermoacoustic prime mover engine, the paper first study on the pressure ratio in different operating pressure. 首次针对驻波热声发动机几种不同管型的谐振管,系统的探讨了工作压力对压比的影响。
In comparison with standing-wave thermoacoustic engine, travelling-wave engine has lower onset temperature, much higher pressure ratio and higher efficiency. 行波型热声发动机具有比驻波型热声发动机更低的起振温度、更高的热功转化效率,从而引起国内外同行的普遍关注。
In conventional engine control system some sensed parameters, such as rotor speed and pressure ratio, are used as controlled signals. 传统的发动机控制是将一些可测量参数作为被控制量,如转速和压比,因为可由它们推算出推力。
A Preliminary design study for separate turbofan-ramjet engine was conducted. Choices of engine configuration, selection of design parameters, including of bypass ratio, pressure ratio, temperature before turbine and type of fuel etc, and operat - ing mode of turbofan-ramjet engine were discussed. 本文对分离式涡扇-冲压发动机进行了初步设计研究,讨论了如何选择发动机结构外形,设计参数(包括旁路比、压力比、涡轮前温度和燃料种类)以及涡轮冲压发动机工作方式等。
After acoustic power output of the thermoacoustic engine was measured accurately by variable-load method, the mutual relations of power output with pressure ratio, heating power and heating temperature were analyzed. 应用变负载法,对该热声发动机的声功输出进行了精确测量.分析得到声功输出与热声发动机压比、加热功率和加热温度之间的相互影响关系。