NASA/GE Fan and Compressor Research Accomplishments
NASA/GE Fan and Compressor Research Accomplishments
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NASA/GE 风扇和压缩机研究成果
DOI：
10.1115/93-gt-315
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
L. H. Smith
中科院分区：
文献类型：
--
作者：
L. H. Smith
本文介绍了美国通用航空发动机公司在NASA资助下进行的风扇和压气机研究项目，发现四个叶尖速度为1400 fps、翼型不同的转子具有相似的失速线，但效率趋势不同。一个定子放置在其中之一影响其性能有所。在1500 fps级前安装的变弯度进气道导叶的调整对泵送能力的影响不大，但对失速线的影响不大。高速风扇的发展揭示了翼型形状和部分翼展围带堵塞对性能的影响。用于安静清洁短程实验发动机（QCSEE）的950 fps变距风扇展示了反推力能力和避免反推力操作期间大的堆芯入口压力损失的新方法。1350-fps节能发动机（E3）风扇采用了新颖的四分之一级布置，消除了转子间排气的需要，同时具有良好的除尘潜力，表现出卓越的性能。E3压缩机项目采用低速研究压缩机测试来确定最合适的叶片类型。通过高速台架试验和发动机试验，研制出了这种转子压比为23：1的压气机。通过对排气和吹气控制机匣边界层的研究发现，即使没有辅助空气回路，不规则的机匣几何形状通常也会增强失速线。本文报道了一些由此产生的机匣处理研究。指出了NASA赞助的研究对GE航空发动机产品的影响。版权所有© 1993年，ASME
Fan and compressor research projects carried out at GE Aircraft Engines under NASA sponsorship are described in this paper.Four 1400-fps-tip-speed rotors designed with different airfoil shapes were found to have comparable stall lines but different efficiency trends. A stator placed behind one of these affected its performance somewhat. Adjustments of variable camber inlet guide vanes placed ahead of a 1500 fps stage were found to affect its pumping capability without much affecting its stall line.For the Quiet Engine Program (QEP), two 1160-fps fans and one 1550-fps fan were tested. Development of the high-speed fan revealed the effects on performance of airfoil shape and part-span shroud blockage. The 950-fps variable-pitch fan for the Quiet Clean Short-Haul Experimental Engine (QCSEE) demonstrated reverse thrust capabilities and a novel method of avoiding large core inlet pressure losses during reverse thrust operation. The 1350-fps Energy Efficient Engine (E3) fan demonstrated excellent performance with a novel quarter-stage arrangement that eliminated the need for inter-spool bleed while giving good dirt removal potential.The E3 compressor program employed Low Speed Research Compressor tests to identify the most appropriate blading type. High-speed rig tests and engine tests were then used to develop this 23:1-spool-pressure-ratio compressor.Research on casing boundary layer control through bleeding and blowing led to the discovery that irregular casing geometries usually give stall line enhancements even without auxiliary air circuits. Some of the resulting casing treatment research is reported herein.Instances in which NASA-sponsored research has affected GE Aircraft Engine products are pointed out.Copyright © 1993 by ASME