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Aerodynamic characteristics of scissor-wing geometriesA scissor-wing configuration, consisting of two independently sweeping-wing surfaces, is compared with an equivalent fixed-wing geometry baseline over a wide Mach number range. The scissor-wing configuration is shown to have a higher total lift-to-drag ratio than the baseline in the subsonic region primarily due to the slightly higher aspect ratio of the unswept scissor wing. In the transonic region, the scissor wing is shown to have a higher lift-to-drag ratio than the baseline for values of lift coefficient greater than 0.35. It is also shown that, through the use of wing decalage, the lift of the two independent scissor wings can be equalized. In the supersonic regime, the zero lift wave drag of the scissor-wing at maximum sweep is shown to be 50 and 28 percent less than the zero lift wave drag of the baseline at Mach numbers 1.5 and 3.0, respectively. In addition, a pivot-wing configuration is introduced and compared with the scissor wing. The pivot-wing configuration is shown to have a slightly higher total lift-to-drag ratio than the scissor wing in the supersonic region due to the decreased zero lift wave drag of the pivot-wing configuration.
Document ID
19910055593
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Selberg, Bruce P.
(Missouri Univ. Rolla, MO, United States)
Rokhsaz, Kamran
(Missouri-Rolla, University Rolla, United States)
Housh, Clinton S.
(Missouri Univ. Rolla, MO, United States)
Date Acquired
August 15, 2013
Publication Date
April 1, 1991
Publication Information
Publication: Journal of Aircraft
Volume: 28
ISSN: 0021-8669
Subject Category
Aerodynamics
Accession Number
91A40216
Funding Number(s)
CONTRACT_GRANT: NAG1-975
Distribution Limits
Public
Copyright
Other

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