Effect of Winglets on a First-generation Jet Transport Wing. 6: Stability Characteristics for a Full-span Model at Subsonic Speeds PDF Download
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Author: Stuart G. Flechner
Publisher:
ISBN:
Category :
Languages : en
Pages : 74
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Author: Stuart G. Flechner
Publisher:
ISBN:
Category :
Languages : en
Pages : 74
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Author: Peter F. Jacobs
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 76
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Book Description
The effects of winglets on the static aerodynamic stability characteristics of a KC-135A jet transport model at high subsonic speeds are presented. The investigation was conducted in the Langley 8 foot transonic pressure tunnel using 0.035-scale wing panels mounted on a generalized research fuselage. Data were taken over a Mach number range from 0.50 to 0.95 at angles of attack ranging from -12 deg to 20 deg and sideslip angles of 0 deg, 5 deg, and -5 deg. The model was tested at two Reynolds number ranges to achieve a wide angle of attack range and to determine the effect of Reynolds number on stability. Results indicate that adding the winglets to the basic wing configuration produces small increases in both lateral and longitudinal aerodynamic stability and that the model stability increases slightly with Reynolds number. The winglets do increase the wing bending moments slightly, but the buffet onset characteristics of the model are not affected by the winglets.
Author:
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Category : Airplanes
Languages : en
Pages :
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Author: Peter F. Jacobs
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ISBN:
Category : Airplanes
Languages : en
Pages : 102
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 84
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Author: Peter F. Jacobs
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Category :
Languages : en
Pages : 68
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Author: Robert R. Meyer (Jr.)
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Category : Aerodynamic load
Languages : en
Pages : 64
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"The effect of sideslip on winglet loads and selected wing loads was investigated at high and low subsonic Mach numbers. The investigation was conducted in two separate wind tunnel facilities, using two slightly different 0.035-scale full-span models. Results are presented which indicate that, in general, winglet loads as a result of sideslip are analogous to wing loads caused by angle of attack. The center-of-pressure locations on the winglets are somewhat different than might be expected for an analogous wing. The spanwise center of pressure for a winglet tends to be more inboard than for a wing. The most notable chordwise location is a forward center-of-pressure location on the winglet at high sideslip angles. The noted differences between a winglet and an analogous wing are the result of the influence of the wing on the winglet."--Technical report documentation page.
Author: Robert R. Meyer
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 84
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The static longitudinal and lateral directional characteristics of a 0.035 scale model of a first generation jet transport were obtained with and without upper winglets. The data were obtained for take off and landing configurations at a free stream Mach number of 0.30. The results generally indicated that upper winglets had favorable effects on the stability characteristics of the aircraft.
Author: Robert R. Jr Meyer
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Author: Stuart G. Fletcher
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 26
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