直连式冲压喷气发动机试车台扩大试验范围的一种方法

A METHOD OF EXTENDING TEST RANGE OF DIRECT-CONNECTED RAMJET TEST STAND

用“离心式喷嘴加工误差造成流量偏差”的经验公式改造试车台加热器喷嘴,提高试车台加热能力,并对空气流量加大后的稳定段作用是否受影响及测量段的压力和温度场变化进行分析,扩大了试车台试验范围,满足丁冲压喷气发动机的试验要求。

The heater injector of test stand can be modified by using the experience formulation of 'machining error of centrifugal injector results in flow rate error', and heating capacity of test stand be increased, and also whether the function of stable section after air flow becoming greater is affected or not and pressure and temperature fields on measuring section be analyzed. The results show that the test range of test stand may be extended and test requirement of ramjet be satisfied.