• 论文 •

### 冲压空气涡轮泵的温控节流孔计算方法

1. 1. 北京航空航天大学 交通科学与工程学院, 北京 100083;
2. 航空工业金城南京机电液压工程研究中心, 南京 211106
• 收稿日期:2016-06-23 修回日期:2016-10-01 出版日期:2017-07-20 发布日期:2016-12-13
• 通讯作者: 王岩,E-mail:wybuaa@buaa.edu.cn E-mail:wybuaa@buaa.edu.cn
• 作者简介:王岩 男,博士,副教授,硕士生导师。主要研究方向:液压系统控制、热管理等。
• 基金资助:
国家自然科学基金（51375029）

### A calculation method for temperature control orifice of ram air turbine pump

WANG Yan1, YIN Yafeng1, CHEN Jinhua2, JIANG Pei2

1. 1. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
2. AVIC Jincheng Nanjing Engineering Institute of Aircraft System, Nanjing 211106, China
• Received:2016-06-23 Revised:2016-10-01 Online:2017-07-20 Published:2016-12-13
• Supported by:
National Natural Science Foundation of China (51375029)

Abstract: Ram air turbine (RAT) pump, by transforming the mechanical energy into hydraulic energy, can be used to control the aircraft rudder in emergency situation. Its performance of rapid response is critical to ensure the aircraft's safety. Exposed to low-temperature atmosphere for long time, the high viscosity of hydraulic oil will hinder the rapid start of the hydraulic pump, and an effective method for this problem is to introduce the high-pressure oil into aircraft RAT pump from the main hydraulic system. Taking RAT pump as research object, this paper explores the calculation method of minimum temperature control orifice for the RAT pump. First, it explains the thermal insulation theory of the RAT pump which is equipped with temperature control orifice in standby mode and proposes an algorithm of the orifice. Second, it establishes RAT pump's thermodynamic model and deduces the calculation formula of the orifice's diameter. Next, it establishes temperature control system's thermodynamic model with MATLAB and calculates the results. Finally, it verifies the correctness of the algorithm through simulation calculation, and energy saving effect is remarkable.