Free flight experiment on boundary layer transition of 7° half angle cone at Mach 6

Wang Zonghao; Huang Jie; Shi Anhua; Song Qiang; Liao Dongjun; Liu Sen

doi:10.11729/syltlx20180185

Volume 33 Issue 4

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Wang Zonghao, Huang Jie, Shi Anhua, et al. Free flight experiment on boundary layer transition of 7° half angle cone at Mach 6[J]. Journal of Experiments in Fluid Mechanics, 2019, 33(4): 58-64. doi: 10.11729/syltlx20180185

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Free flight experiment on boundary layer transition of 7° half angle cone at Mach 6

doi: 10.11729/syltlx20180185

Hypervelocity Aerodynamics Institute of China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

Received Date: 2018-11-19
Rev Recd Date: 2019-04-19
Publish Date: 2019-08-25

Abstract

Abstract

A series of boundary layer transition measurements of the 7° half angle cone at Mach 6 in the Aero-physic Range were conducted. The models are made of aluminum alloy with black oxidation or low thermal conductivity coating. The base diameter of the cone is 33mm, and the radius of the nose tip is among 0.27~2.50mm. The parameter covers Mach number 4.89~6.63, Unit Reynolds number 4.8×10⁷/m~5.2×10⁷/m, and the total angle of attack 0.8°~5.8°. The boundary layer shadowgraph and surface inferred images which reflect the transition line configuration were obtained, and the transition Reynolds number was calculated to be 2.4×10⁶~5.6×10⁶. The results indicate that:the transition Reynolds number decreases by enlarging the angle of attack, certain nose tip scale would delay the transition.
- 7° half angle cone,
- boundary layer transition,
- ballistic range experiment,
- shadowgraph,
- inferred radiation imaging

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References(21)

References

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