一种可变流量系数的通气短舱匹配方法

doi:10.7527/S1000-6893.2018.22379

Abstract

Abstract: To simplify the design and reduce the cost of the wind tunnel test, the Mass Flow Ratio (MFR) of Through-Flow Nacelle (TFN) should be matched with the Powered Nacelle (PN) which can be simulated by using the TFN instead of the PN in the aircraft aerodynamic design and the wind tunnel test. However, when studying the TFN aerodynamic characteristics under different MFRs, specific TFN designs need to be carried out to match the MFR. In this paper, while maintaining the nacelle outside cover and intake shape unchanged, a conical plug is added in the TFN and by adjusting the positions of the conical plug, different MFRs can be acquired faster. This method is more efficient compared with the traditional method. The isolated nacelle wind tunnel using the designed method is tested, and the test results well match with the design results, proving the feasibility of adding a conical plug in the TFN.

Key words: through-flow nacelle, powered nacelle, mass flow ratio, conical plug, aerodynamics

CLC Number:

V211

YAN Haijin, DU Xi. A matching method for variable mass flow ratio for through-flow nacelle[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(12): 122379-122379.

References

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A matching method for variable mass flow ratio for through-flow nacelle

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