Some Theoretical Low-speed Span Loading Characteristics of Swept Wings in Roll and Sideslip
Some Theoretical Low-speed Span Loading Characteristics of Swept Wings in Roll and Sideslip

Author: John D. Bird

Publisher:

Published: 1949

Total Pages: 44

ISBN-13:

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The 7-point method of Weissinger is used to calculate the span loading in roll, lateral center of pressure, and damping in roll for wings having various aspect ratios, sweep angles, and taper ratios. The applicability of the method to the determination of certain other aerodynamic derivatives is investigated, and corrections for the first-order effects of compressibility are indicated.

The Rolling Moment Due to Sideslip of Swept Wings at Subsonic and Transonic Speeds
The Rolling Moment Due to Sideslip of Swept Wings at Subsonic and Transonic Speeds

Author: Edward C. Polhamus

Publisher:

Published: 1955

Total Pages: 90

ISBN-13:

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A summary and analysis has been made of results obtained in a systematic research program concerned with the effects of wing sweep, aspect ratio, taper ratio, and dihedral on the rolling moment due to sideslip characteristics of wing-fuselage configurations up to Mach numbers of about 0.95. Other test results are presented to show trends of rolling moment due to sideslip with Mach number for a few wings in the transonic and supersonic speed range.

Theoretical Antisymmetric Span Loading for Wings of Arbitrary Plan Form at Subsonic Speeds
Theoretical Antisymmetric Span Loading for Wings of Arbitrary Plan Form at Subsonic Speeds

Author: John DeYoung

Publisher:

Published: 1950

Total Pages: 106

ISBN-13:

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A simplified lifting-surface theory that includes effects of compressibility and spanwise variation of section lift-curve slope is used to provide charts with which antisymmetric loading due to arbitrary antisymmetric angle of attack can be found for wings having symmetric plan forms with a constant spanwise sweep angle of the quarter-chord line. Consideration is given to the flexible wing in roll. Aerodynamic characteristics due to rolling, deflected ailerons, and sideslip of wings with dihedral are considered. Solutions are presented for straight-tapered wings for a range of swept plan forms.

Lift, Pitching Moment, and Span Load Characteristics of Wings at Low Speed as Affected by Variations of Sweep and Aspect Ratio
Lift, Pitching Moment, and Span Load Characteristics of Wings at Low Speed as Affected by Variations of Sweep and Aspect Ratio

Author: Edward J. Hopkins

Publisher:

Published: 1951

Total Pages: 40

ISBN-13:

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Lift, pitching-moment, and pressure distribution were measured on a wing which was swept -40, -30, 0, 35, and 45 degrees. The wing span was decreased to give aspect ratios 6.8, 5.3, 4.2, 3.4, and 2.8. The effects of independent variations of sweep and aspect ratio on the lift, pitching-moment, and span-load characteristics of the wings are compared with the effects estimated by use of the Weissinger method.