An Experimental Characterization on the Acoustic Performance of ForwardRearward Retraction of a Nose Landing Gear
Joint Authors
Liang, Yong
Zhao, Kun
Chen, Yingchun
Zhang, Longjun
Bennett, Gareth J.
Source
International Journal of Aerospace Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-04
Country of Publication
Egypt
No. of Pages
11
Abstract EN
The modern undercarriage system of a large aircraft normally requires the landing gear to be retractable.
The nose landing gear, installed in the front of the fuselage, is retracted either forward or rearward.
In the forward/rearward retraction system, the landing gear is normally installed to the trailing/leading side of the bay.
When the incoming flow passes the landing gear as well as the bay, the installation that corresponds to the forward/rearward retraction system has a significant impact on the coupling flow and the associated noise of the landing gear and the bay.
In this paper, acoustic performance of the forward/rearward retraction of the nose landing gear was discussed based on experiment.
The landing gear bay was simplified as a rectangular cavity, and tests were conducted in an aeroacoustics wind tunnel.
The cavity oscillation was first analyzed with different incoming speeds.
Then, the landing gear model was installed close to the trailing and the leading side of the cavity, respectively.
It was observed that installation close to the leading side can help disturb the shear layer so as to suppress the oscillation, while the trailing one can make the landing gear itself produce lower noise.
Accordingly, conclusions on the acoustic performance of the forward/rearward retraction of the nose landing gear are made.
American Psychological Association (APA)
Liang, Yong& Zhao, Kun& Chen, Yingchun& Zhang, Longjun& Bennett, Gareth J.. 2019. An Experimental Characterization on the Acoustic Performance of ForwardRearward Retraction of a Nose Landing Gear. International Journal of Aerospace Engineering،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1156458
Modern Language Association (MLA)
Liang, Yong…[et al.]. An Experimental Characterization on the Acoustic Performance of ForwardRearward Retraction of a Nose Landing Gear. International Journal of Aerospace Engineering No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1156458
American Medical Association (AMA)
Liang, Yong& Zhao, Kun& Chen, Yingchun& Zhang, Longjun& Bennett, Gareth J.. An Experimental Characterization on the Acoustic Performance of ForwardRearward Retraction of a Nose Landing Gear. International Journal of Aerospace Engineering. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1156458
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1156458