High-Speed Measurements on a Swept-Back Wing (Sweepback Angle phi = 35 Deg) Page: 2 of 34
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TECHNICAL MEMORANDUM NO. 1102
HIGH-SPEED MEASUREMEPNTS ON A SWEPT-BACK WING
(SWEEPBACK ANGLEcp 5 = 350)*
By B. Gothert
Abstract: In the following, .high-speed measurements
on a swept-back wing are reported. The curves of lift,
moment, and drag have been determined up to Mach numbers
of M = 0.87, and they are compared to a rectangular wing.
Through measurements of the total-head loss behind the
wing and through schlieren pictures, an insight into the
formation of the compression shock at high Mach numbers
has been obtained.
I. Dimensions of the Wing Model and Summary of the
II. Lift, .Moment, and Drag of the Swept-Back Wing
III. Comparison between a Swept-Back Wing and the
1. Lift and Moment
IV. Special Investigations for Clarifying the Premature
Drag Rise on the Swept-Back Wing
1. Oblique Wing with End Plates at Low Velocities
2. Measurements of Total-Head Loss on the Swept-
Back Wing at High Velocities (a = 00)
. Schlieren Observations.
. Favorable Shapes of Fuselage or Nacelle
*"Hochgeschwindigkeitmessungen an einem Pfeilflugel
(Pfeilwinkelq = 350). From Lilienthal-Gegellschaft
fur Luftfahrtforschung, Report 156, pP 30-40.
NATIOrAL ADVISORY COMMITTEE FOR AERONAUTICS
I I I I II I I
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Göthert, B. High-Speed Measurements on a Swept-Back Wing (Sweepback Angle phi = 35 Deg), report, March 1947; (https://digital.library.unt.edu/ark:/67531/metadc64276/m1/2/: accessed April 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.