基于等换算转速调节的涡轮增压固冲发动机非设计点性能研究

推进技术 ›› 2017, Vol. 38 ›› Issue (1): 27-33.

基于等换算转速调节的涡轮增压固冲发动机非设计点性能研究

刘凯,李江,刘洋,田园,刘诗昌,蒲晓航

西北工业大学燃烧、热结构与内流场重点实验室，陕西西安 710072,西北工业大学燃烧、热结构与内流场重点实验室，陕西西安 710072,西北工业大学燃烧、热结构与内流场重点实验室，陕西西安 710072,西北工业大学燃烧、热结构与内流场重点实验室，陕西西安 710072,西北工业大学燃烧、热结构与内流场重点实验室，陕西西安 710072,西北工业大学燃烧、热结构与内流场重点实验室，陕西西安 710072

发布日期:2021-08-15
作者简介:刘凯，男，博士生，研究领域为吸气式组合发动机。

Study on Off-Design Performance of Turbocharged Solid Propellant Ramjet Controlled by Constant Conversion Speed

Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory， Northwestern Polytechnical University，Xi’an 710072，China,Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory， Northwestern Polytechnical University，Xi’an 710072，China,Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory， Northwestern Polytechnical University，Xi’an 710072，China,Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory， Northwestern Polytechnical University，Xi’an 710072，China,Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory， Northwestern Polytechnical University，Xi’an 710072，China and Science and Technology on Combustion，Internal Flow and Thermal-Structure Laboratory， Northwestern Polytechnical University，Xi’an 710072，China

Published:2021-08-15

摘要/Abstract

摘要： 为了得到优良的涡轮增压固冲发动机(TSPR)的非设计点性能，提出了等换算转速、等余气系数的调节规律，通过确定TSPR非设计点共同工作过程，建立了TSPR非设计点性能模型。以高空高速(22km，Ma3.64)为设计点，计算和分析了0km，5km，10km，15km高度下TSPR的非设计点性能。结果显示:当采用等换算转速和等余气系数的调节规律时，TSPR非设计点工作范围宽广，具有良好的非设计点性能，最大推力是最小推力的3倍左右，最大比冲超过800s；在(10km，Ma2.5)的非设计点，通过调节转速，可以获得1.55倍的推力调节比和稳定的比冲性能；最后得出:提高转速，增加飞行速度，提高富燃流量驱涡流量比是增强TSPR性能的有效途径。

关键词: 涡轮增压固冲发动机；非设计点性能；换算转速；余气系数；调节规律

Abstract: In order to obtain better off-design performance of turbocharged solid propellant ramjet(TSPR)，a control plan was proposed for off-design in which the conversion speed of the turbocharger was held constant，the air residual fraction of combustor was held constant as well. The performance model of off-design was established by analyzing the working process of TSPR. Setting the design point (22km，Ma3.64)，the off-design performance of TSPR at different altitudes such as 0km，5km，10km and 15km was calculated and analyzed .The results show that under the control plan mentioned above，the TSPR has wider range of work and better off-design performance with a strong thrust regulation and stable specific impulse. The maximum thrust is about 3 times the minimum thrust，and the maximum specific impulse is over 800s. At the off-design point(10km，Ma2.5)，by adjusting the rotational speed，the thrust adjustment ratio could reach 1.55 and the stable specific impulse performance can be obtained. Moreover，it is effective to improve the performance of TSPR by increasing conversion speed，enhancing flight speed and raising the ratio of fuel-rich gas flow and the gas flow driving turbine.

Key words: Turbocharged solid propellant ramjet；Performance of off-design point；Conversion speed；Air residual fraction；Control plan

刘凯,李江,刘洋,田园,刘诗昌,蒲晓航. 基于等换算转速调节的涡轮增压固冲发动机非设计点性能研究[J]. 推进技术, 2017, 38(1): 27-33.

LIU Kai,LI Jiang,LIU Yang,TIAN Yuan,LIU Shi-chang,PU Xiao-hang. Study on Off-Design Performance of Turbocharged Solid Propellant Ramjet Controlled by Constant Conversion Speed[J]. Journal of Propulsion Technology, 2017, 38(1): 27-33.

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