涡轮喷气发动机在高空台上的排气反压模拟试验技术

A TEST TECHNOLOGY SIMULATION EXHAUSTION AMBIENT PRESSURE OF THE TURBOJET IN THE ALTITUDE-SIMULATING CHAMBER

关键词:  涡轮喷气发动机  高空模拟试车台  高空模拟试验

Key words:  Turbojet engine  Altitude simulated test cell  Altitude simulation test

摘要:

介绍涡轮喷气发动机在高空模拟试车台上的排气反压模拟试验技术，并详述了提高涡喷发动机高空模拟高度的若干措施。利用这些试验技术，已成功地进行了数百次涡喷发动机高空模拟试验。

Abstract:

The simulating test technology of the exhaustion ambient pressure ofthe turbojet in some altitude simulating chamber is emphatically described, and themeasures to increase simulated altitudes such as appropriately using tail cabin, exhaust diffuser and ejector; choosing the quantity of water jected and cooling air; applying choking technique and improving the air-tightnelss in the cabin are also discussed in details.The simulating test technology of exhaustion ambient pressure has been applied to 600 tests for a turbojet of aircraft at high altitude conditions in some altitude simulating cabin, it is satisfied with requirements for tests of turbojet.