电子吊舱引排气参数测试分析  

Survey Analysis of Exhaust Parameters of Electronic Pod

作　　者：包胜[1] 褚鑫 王敬韬 王超[1] 尹本浩[1] BAO Sheng;CHU Xin;WANG Jintao;WANG Chao;YIN Benhao(The 29th Research Institute of CETC,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《电子机械工程》2021年第5期31-34,39,共5页Electro-Mechanical Engineering

摘　　要：文中首次详细报道了电子吊舱引排气参数相关实测结果,分析了电子吊舱引排气参数随飞行工况变化而变化的响应特性。得出主要结论:吊舱引排气压力随飞行工况的变化而同步实时变化,在相同飞行高度下,马赫数Ma越大,引气压力就越大,排气压力就越小;在飞行高度为3~5 km、Ma为0.4~0.77的飞行工况下,采用非淹没式引气结构,并将引气口布局在合适位置,则引气总压恢复系数可达到0.98~1.0;将排气结构布置在漏斗引气结构尾部时,排气口附近存在明显的尾流负压效应。文中猫耳排气口的实测排气压力低于按经验公式计算所得的排气压力,其差值随Ma增大而增大。A survey analysis of exhaust parameters of electronic pod has been firstly reported in detail and the response of exhaust parameters of electronic pod changing with flight conditions is analyzed in this paper.The main conclusions are as follows:The exhaust parameters of electronic pod change synchronously with the flight conditions.At the same altitude,with the increase of Mach number,the bleed pressure increases and the exhaust pressure decreases;with non-submerged air intake structure and the air intake arranged in a reasonable position,the recovery coefficient of bleed pressure can reach 0.98~1.0 under 3~5 km flight altitude and 0.4~0.77 Mach number;when the exhaust structure is arranged at the rear of the funnel bleed structure,there is obvious negative pressure effect of wake near the exhaust port.In this paper the measured exhaust pressure of the cat’s ear exhaust port is lower than the calculated result by the empirical formula and the difference increases with increase of Mach number.

关 键 词：电子吊舱 引排气参数 负压效应 实测结果 

分 类 号：V243[航空宇航科学与技术—飞行器设计]