Small-scale Investigation at Transonic Speeds of the Effects of Thickening the Inboard Section of a 45 Degrees Sweptback Wing of Aspect Ratio 4, Taper Ratio 0.3, and NACA 65A006 Airfoil Section PDF Download
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Author: Kenneth P. Spreemann
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
Author: Kenneth P. Spreemann
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
Author: Jack F. Runckel
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 104
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Book Description
An investigation at transonic speeds of the loading over a 45 degree sweptback wing having an aspect ratio of 3, a taper ratio of 0.2, and NACA 65A004 airfoil sections has been conducted in the Langley16-foot transonic tunnel. Pressure measurements on the wing-body combination were obtained at angles of attack from 0 to 26 degrees at Mach numbers from 0.80 to 0.98 and from 0 to about 12 degrees at Mach numbers from 1.00 to 1.05. Reynolds number, based on the wing mean aerodynamic chord, varied from 7,000,000 to 8,500,000 over the test Mach number range.
Author: JACK F. RUNCKEL
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
An investigation at transonic speeds of the loading over a 45 degree sweptback wing having an aspect ratio of 3, a taper ratio of 0.2, and NACA 65A004 airfoil sections was conducted in the Langley 16-foot transonic tunnel. Pressure measurements on the wing-body combi ation were obtained at angles of attack from 0 degrees to 26 degrees at Mach numbers from 0.80 to 0.98 and at angles of attack from 0 degrees to about 12 degrees at Mach numbers from 1.00 to 1.05. Reynolds number, based on the wing mean aerodynamic c ord varied from 7 times 10 to the 6th po er to 8.5 times 10 to the 6th power over the test Mach number range. Results of the investigation indicate that a highly swept shock originates at the juncture of the wing leading edge and the body at moderate angles of attack and has a large influence on the loading over the inboard wing sections. (Author).
Author: Robert J. Platt
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 50
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Book Description
A transonic investigation of the effects of sweepback and thickness ratio on the wing loads of a wing in the presence of a body has been made in the Langley 8-foot transonic pressure tunnel. The tests covered wings with a thickness ratio of 6 percent for sweepback angles of 0, 25, and 45 degrees and a thickness ratio of 4 percent for an unswept wing.
Author: Defense Documentation Center (U.S.)
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 894
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Book Description
Author: George W. Jones
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 22
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Book Description
A flutter investigation has been made in the Langley transonic blowdown tunnel at Mach numbers between 0.79 and 1.34 on a thin 10 degree sweptback wing having an aspect ratio of 4 and a taper ratio of 0.6. The data obtained have been compared with data from NACA Research Memorandum L55I13A for zero and 30 degree sweptback wings of the type investigated, the flutter boundary for the 10 degree sweptback wing falls between those for the zero degree and 30 degree sweptback wings in the low supersonic Mach number range. However, the subsonic level (around a Mach number of 0.8) of the flutter boundary for the 10 degree sweptback wing lies above those for the zero and 30 degree sweptback wings. In addition, the amount of rise in the flutter boundary from the subsonic level to the supersonic values is about the same for the wings with angles of sweepback of 10 degrees and zero degrees, but is much greater for the wing with an angle of sweepback of 30 degrees.
Author: Ralph P. Bielat
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 44
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Book Description
Four wing-body combinations of the same plan form (47 degree sweep, 3.5 aspect ratio, and 0.2 taper ratio) were compared at transonic speeds in the Langley 8-foot high-speed tunnel. Three wings were 4, 6, and 9 percent thick; the fourth was 6 percent thick but, on the inner 0.4 span, tapered to 12-percent thickness at the roots.
Author: Donald L. Loving
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 67
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Book Description
An investigation was made in the Langley 8-foot transonic tunnel of the pressure distribution on a wing-body combination having a 45 degree swept-back wing with aspect ratio 4, taper ratio 0.6, and NACA 65A006 airfoil sections parallel to the plane of symmetry. The body had an afterbody which was cylindrical from the region of the leading edge of the wing-body juncture rearward to the base. Data were obtained at Mach number from 0.60 to 1.13. The test Reynolds numbers ranged from 1,740,000 to 2,030,000. In order to determine the effects on loads of a change in body shape, the results of this investigation are compared with similar data previously obtained for the same wing in combination with a body that was curved from the nose to the base.
Author: Vernard E. Lockwood
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 23
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Book Description
The damping-in-roll characteristics of three wings having an aspect ratio of 4, a taper ratio of 0.6, and NACA 65A006 airfoil section, and sweep angles of 0, 35, and 45 degrees have been determined through a Mach number range from 0.6 to 1.15 and an angle-of-attack range from 0 to approximately 7 degrees. The data were obtained from the Langley 7- by 10-foot tunnel transonic bump by utilizing the twisted-wing technique.
Author: James W. Schmeer
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 42
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Book Description
An investigation was conducted in the Langley 16-foot transonic tunnel to determine the effects of leading-edge droop on the pressure distribution on a 45 degree sweptback wing with an aspect ratio of 4, a taper ratio of 0.6, and NACA 65A006 airfoil sections parallel to the plane of symmetry. The leading edge of the wing was drooped 6 degrees about the 19-percent chord line from 0.15 semispan to the wing tip. Data were obtained at Mach numbers of 0.80 to 1.03 with average Reynolds numbers of 5,700,000 to 6,300,000, respectively. The results of this investigation are compared with the pressure data obtained with the undrooped or basic wing of a previous investigation.
