Study on model base pressure measuring technique in hypersonic wind tunnel

Xie Fei; Guo Leitao; Zhang Shaowu; Cao Cheng; Zou Qiongfen

doi:10.11729/syltlx20150043

Volume 30 Issue 4

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Xie Fei, Guo Leitao, Zhang Shaowu, et al. Study on model base pressure measuring technique in hypersonic wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(4): 71-75. doi: 10.11729/syltlx20150043

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Study on model base pressure measuring technique in hypersonic wind tunnel

doi: 10.11729/syltlx20150043

China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

Received Date: 2015-03-23
Rev Recd Date: 2015-11-22
Publish Date: 2016-08-25

Abstract

Abstract

It is an experimental technique problem to exactly achieve test model base pressure in hypersonic wind tunnel. Because of the large error of model base pressure measurement before, it is difficult to exactly deduct the model base drag. Three base pressure measuring methods are developed in Φ1m hypersonic wind tunnel, viz. the absolute pressure micro-sensor measuring method, the low pressure differential pressure sensor measuring method and the electronic scanning pressure (ESP) measuring method. The validation tests of HB-2 standard model and a certain missile model are separately conducted at Ma=6. The test results indicate that: the absolute pressure micro-sensor measuring method can avoid the influence of piezometric pipe; it also can rapidly respond the variation of model base pressure with high accuracy.
- hypersonic wind tunnel,
- base pressure,
- pressure sensor,
- electronic scanning pressure measuring

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References(11)

References

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