直升机噪声适航合格审定试验测试系统设计及应用

The Design and Application of Helicopter noise airworthy test system

摘要:

民用直升机噪声适航合格审定噪声符合性验证条例(CCAR36)对试验基准条件、噪声测量、噪声评定和计算等方面都做了明确规定,并要求试验设备、相关数据、试验条件等信息报送给中国民用航空局,数据处理软件必须经过中国民用航空局提供的数据进行检验,确保计算程序的正确性。一般商业化噪声测量系统没有针对噪声适航合格审定要求提供集成解决方案,试验现场不能对测试数据实时处理判断试验数据是否满足要求,如果数据无效,重新试验将造成大量的人力物力及时间浪费。通过对适航条例研究,本文提出了一套基于VXI总线的噪声试验数据采集及实时数据处理解决方案,极大提高试验效率,并在某民用直升机噪声适航合格审定试验中得到成功应用,取得较好效果。

Abstract:

For helicopter noise airworthy test, Its test conditions、test method and data process algorithm are clearly defined in the airworthiness regulations。The test device、test data and test conditions must submit to Civil Aviation Administration of China(CAAC)。The data process program must also be checked by CAAC with its standard data. There is no ready-made test system that can meet the requirements, especially on real-time data validity judgment and this will run a risk of re-do the high-cost test. To solve this problem, a test system based on VXI bus and data process program were developed, which can greatly increase efficiency, This system were successfully applied on some helicopter’s noise airworthy test.