Title of Paper:Modeling of a STOVL Propulsion System with a Lift Fan

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Affiliation of Author(s):能源与动力学院

Journal:Tuijin Jishu

Abstract:In allusion to the blank of domestic research of combining contra lift fan with STOVL's propulsion system's modeling, this text built the component level real-time mathematical model of a STOVL's propulsion system with contra lift fan and common lift fan respectively and contrasted them. In order to decrease drag, a suitable drag coefficient as 0.0470 was chosen to the lift fan's inlet by the interpolation. In order to satisfy the accuracy of fan's off-design points'characteristics, elementary stage theory was introduced to iteratively design and compute the fan's blades at the same time. This text specially applied assist-thrust correction factor(κ)to design the contra fan, with this way, their thrusts equal and shaft power's deviation is only 0.0265. Further dynamic simulation shows that contra lift fan's thrust and shaft power are a little larger on off-design points because of the characteristics'differences. On account of the coupling between lift fan and engine, engine will adjust its rotational speed to attempt to reduce the effect of lift fans'differences. © 2018, Editorial Department of Journal of Propulsion Technology. All right reserved.

ISSN No.:1001-4055

Translation or Not:no

Date of Publication:2018-03-01

Co-author:Fu, Da-Wei

Correspondence Author:zhb