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

YAN Haijin; DU Xi

doi:10.7527/S1000-6893.2018.22379

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2018 , Vol. 39 >Issue 12: 122379 - 122379

DOI: https://doi.org/10.7527/S1000-6893.2018.22379

Fluid Mechanics and Flight Mechanics

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

YAN Haijin ,
DU Xi

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Beijing Key Laboratory of Simulation Technology for Civil Aircraft Design, Beijing Aeronautical Science and Technology Research Institute of COMAC, Beijing 102211, China

Received date: 2018-05-29

Revised date: 2018-06-25

Online published: 2018-12-06

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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

Cite this article

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 . DOI: 10.7527/S1000-6893.2018.22379

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