基于压力扫描阀的航空发动机飞行试验气动压力测试方法优化

牛文敬; 卢予恩; 薛文鹏; 宋江涛

doi:10.13224/j.cnki.jasp.20240336

基于压力扫描阀的航空发动机飞行试验气动压力测试方法优化

doi: 10.13224/j.cnki.jasp.20240336

中国飞行试验研究院发动机所，西安 710089

详细信息

作者简介:
牛文敬（1993-），女，工程师，硕士，研究方向为航空发动机飞行试验。E-mail：new159@126.com

中图分类号: V217⁺.22
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出版历程
- 收稿日期: 2024-05-26
- 网络出版日期: 2025-01-09

Optimization of aero-engine pneumatic pressure test method in flight test by using pressure scanner

Department of Engine，Chinese Flight Test Establishment，Xi’an 710089，China

摘要

摘要:
针对航空发动机飞行试验中因试验发动机流道测量参数多导致加装传感器数量多，与机载空间有限相矛盾的问题，以及飞行中气流测压管路易进入水滴结冰导致气流压力测量失效的问题，提出了采用压力扫描阀代替传统压力传感器进行发动机气流参数的测量以及对测压管路反向吹除和加热的方法，开展了压力扫描阀系统机载适配性设计、高压气体反吹加热及控制设计和飞行试验验证。试验结果表明：采用压力扫描阀进行气流压力测量及扫描阀反吹加热的方法可以有效解决机载空间不足与加装的传感器多的矛盾，同时避免飞行中因引压管路进水甚至结冰导致测量无效的问题，保障试验发动机气流参数的有效测量，该方法在飞行器飞行试验中具有较好的应用价值。
- 涡扇发动机 /
- 飞行试验 /
- 压力扫描阀 /
- 压力测试 /
- 反向吹除和加热
Abstract:
In the aero-engine flight test, due to the large number of testing parameters of the test engine, the number of installed sensors was large, which contradicted with the limited airborne space. In addition, water droplets easily flowed into the pressure measuring pipe and freezed during the flight, resulting in the failure of airflow pressure measurement. Focusing on the above issues, the method of using a pressure scanner instead of traditional pressure sensors to measure engine airflow parameters was proposed, and a method of reverse blowing and heating the pressure measuring pipe was presented. The adaptive design of pressure scanner system on an airplane, high pressure gas reverse blowing and heating and control design, and verification of the above design by flight test were carried out. The results showed that the method of using the pressure scanner for air flow pressure measurement and scanning valve reverse blowing and heating can effectively solve the contradiction between the limited space of the aircraft and large number of installed sensors, avoid the problem of invalid measurement due to the water accumulation or icing in the pressure ducts, and ensure effective measurement of test engine pressure parameters. This method has good application value in flight test of aircraft.
- turbofan engine /
- flight test /
- pressure scanner /
- pressure test /
- reverse blowing and heating

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图 1 压力扫描阀系统组成

Figure 1. Pressure scanner system

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图 2 压力扫描阀内部气体流通路径

Figure 2. Flow path of the gas inside the pressure scanner

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图 3 压力扫描阀机载测试与控制系统架构

Figure 3. Formation of test and control system on the plane when using a pressure scanner

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图 4 飞机穿云后水滴进入测压管路

Figure 4. Water droplets entered the pressure pipes after the plane passes through the cloud

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图 5 压力扫描阀控制逻辑

Figure 5. Pressure scanner control logic

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图 6 测压管路结冰与未结冰时的测点压力

Figure 6. Measuring point pressure of the pressure measuring pipeline under the frozen and unfrozen conditions

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