高空长航时无人机用涡扇发动机技术分析

为了研制能在高空稳定工作、且耗油率低的、高空长航时用的涡扇发动机,借助数值计算和试验数据,对此类发动机在高空工作时,其压缩系统、燃烧系统、涡轮、控制系统、润滑系统和内部空气系统所遇到的问题作了较为系统、深入的探讨和分析。结果表明,高空低Re使压缩系统、燃烧系统和涡轮性能下降,控制系统必须调整所有与飞行高度有关的参数,滑油箱压力、油泵气蚀和滑油冷却问题必须予以考虑,内部空气系统会影响冷却和封严效果。对每一个问题都提出了相应的解决办法。

Technological analysis for the turbofan engine of high altitude long endurance unmanned aerial vehicles

To develop the turbofan engine for high altitude,long endurance unmanned aerial vehicles(HALE UAV),the problems which will be run into at high altitude are discussed and analysed for high/low pressure compressor,combustion system,high/low pressure turbine,engine control system,lubrication system and internal air system.The solution for every problems are proposed.