Effects of Aspect Ratio and Canopy Shape on Low-speed Aerodynamic Characteristics of 50.0 ̊swept Parawings PDF Download
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Author: Frank M. Bugg
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
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Book Description
An investigation was made to study the effects of aspect ratio and canopy shape on the static longitudinal and lateral aerodynamic characteristics of parawings having 50.0° sweptback leading edges. Parawings with conical canopies and aspect ratios of 3.00, 4.00, 5.00, and 5.45 and parawings with cylindrical (zero twist and camber) canopies and aspect ratios of 3.00, 4.00, and 5.45 were used in the investigation. Effects of canopy fullness were investigated for aspect-ratio-5.45 parawings with both conical and cylindrical canopies.
Author: Frank M. Bugg
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
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Book Description
An investigation was made to study the effects of aspect ratio and canopy shape on the static longitudinal and lateral aerodynamic characteristics of parawings having 50.0° sweptback leading edges. Parawings with conical canopies and aspect ratios of 3.00, 4.00, 5.00, and 5.45 and parawings with cylindrical (zero twist and camber) canopies and aspect ratios of 3.00, 4.00, and 5.45 were used in the investigation. Effects of canopy fullness were investigated for aspect-ratio-5.45 parawings with both conical and cylindrical canopies.
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Delwin R. Croom
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 110
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Book Description
A low-speed wind-tunnel investigation was conducted to study effects of wing-canopy shape on the aerodynamic characteristics and spreader-bar load of a 550 swept parawing having large-diameter leading edges and keel. The canopy-flat-pattern sweep angles investigated on the 550 swept wing were 42.50, 450, 47.50, 500, and 52.50. Several other modifications to the canopy shape were also studied, such as removal of single, double, and compound gores from the rear part of each canopy lobe. A study of the effects of wing-leading-edge sweep angle was made between sweep angles of 500 and 600 and effects of leading-edge diameter were obtained at the basic 550 sweep angle. Effects of keel web height were determined for a constant trailing-edge length and also for trailing-edge lengths that varied with web height.
Author: Delwin R. Croom
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 98
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Book Description
A low-speed wind-tunnel investigation was conducted to study effects of wing-canopy shape on the aerodynamic characteristics and spreader-bar load of a 55° swept parawing having large-diameter leading edges and keel. The canopy-flat-pattern sweep angles investigated on the 55° swept wing were 42.5°, 45°, 47.5°, 50°, and 52.5°. Several other modifications to the canopy shape were also studied, such as removal of single, double, and compound gores from the rear part of each canopy lobe. A study of the effects of wing-leading-edge sweep angle was made between sweep angles of 50° and 60° and effects of leading-edge diameter were obtained at the basic 55° sweep angle. Effects of keel web height were determined for a constant trailing-edge length and also for trailing-edge lengths that varied with web height.
Author: Rodger L. Naeseth
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 88
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Book Description
An investigation has been made in the Langley 300-MPH 7- by 10-foot tunnel to determine the aerodynamic characteristics of a related series of parawings in which wing sweep was the primary variable. The leading-edge sweep angles varied from 400 to 750 and the three basic parawings had flat-planform sweep angles of 350, 450, and 550. The canopies of the wings were made of fabric. Tests were made at an airspeed of 38.6 mph and a Reynolds number of approximately 1.5 X 106. The maximum angle-of-attack range was from 140 to 530 for the wings having a canopy of 350 flat-planform sweep. A limited investigation of lateral characteristics was made for sideslip angles from approximately -50 to 160 for two angles of attack, and lateral stability derivatives were obtained for some configurations through a angle-of-attack range. Forces and moments acting on the wing and apex hinge moments were measured.
Author: Delwin R. Croom
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
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Book Description
Author: Edward Charles Polhamus
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 48
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Book Description
Low-speed wind-tunnel studies were made of the effects of camber and twist and the effects of aspect ratio on the aerodynamic characteristics of parawings. To determine the effects of camber and twist, tests were made both with the conventional conical-type canopy, which provides camber and washout, and with a cylindrical-type canopy which provides essentially zero camber and twist. With regard to aspect ratio, tests were made of parawings having aspect ratios of 3 and 6; the range was thereby extended well beyond that of previous investigations. The degree to which airfoil and wing theory can be used to predict the aerodynamic characteristics of parawings was also investigated.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 984
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Author: P. L. Coe (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 76
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 640
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