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Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider

Yıl 2010, Cilt: 2 Sayı: 4, 55 - 63, 01.12.2010

Öz

The paraglider poses an interesting challenge to the aerodynamics researcher. This paper studies aerodynamic issues involved in the deployment and operation of a paraglider. The surface shape of the paraglider is determined by the pressure distribution in and around the paraglider, the porosity of the fabric, and the presence of cell cross-flow, in addition to the fabric structure and the tensions in the lines at the attachment points. In this studies wind tunnel test of a three dimensional paraglider wing canopy cell model has been performed. Two dimensional (i.e. pressure measurement along the cord length and span wise direction) pressure distributions over the surface have been investigated at different angle of attack, simultaneously wing surface shape profiles has been measured directly. Surface contours of paraglider during operation in a wind tunnel are obtained. The pressure distribution in turn depends on the attitude and the surface shape. It has been observed that the minimum pressure over the surface of the wing increases towards the edges from the central section. Wing end effects also been investigated. There are a certain percentage of upper surfaces affected by the downwash

Kaynakça

  • [1] F. M. Rogallo , J. G. Lowry, D. R. Croom, and R.T. Taylor,” Preliminary Investigation of a Paraglider,” NASA TN D-443,1960.
  • [2] D. E. Hewes,” Free-Flight Investigation of Radio-Controlled Models with Parawing,” NASA TN D-927, 1961.
  • [3] P.G. Fournier and B.A. Bell,” Low Subsonic Pressure Distributions on Three Rigid Wings Simulating Paragliders With Varied Canopy Curvatures and Leading-Edge Sweep, NASA TN D-983, 1961.
  • [3] B. Gamse, K. W. Mort, and P. F. Yaggy,” Low-Speed Wind Tunnel Tests of A Large Scale Inflatable Structure Paraglider,” NASA TN D-2859, 1965.
  • [4] Ware, G.M., Hassell, J.L., “Wind-Tunnel Investigation of Ram-Air-Inflated All-Flexible Wings of Aspect Ratios 1.0 to 3.0”. NASA TM SX-1923, Langley Research Center, Hampton, VA, 1969.
  • [5] Goodrick, T.F., “Theoretical Study of the Longitudinal Stability of High-Performance Gliding Airdrop Systems”. AIAA Paper 75-1394, 5th Aerodynamic Decelerator Systems Conference,1975.
  • [6] Goodrick, T.F., “Scale Effects on Performance of Ram Air Wings”. AIAA Paper 84-0783, January 1984.
  • [7] Brown, G.J., “Tethered Parafoil Test Technique”. AIAA 89-0903-CP, January 1989. [8] C. Matos, R. Mahalingam, G. Ottinger , J. Klapper, R. Funk and N. Komerath,” Wind Tunnel Measurements of Parafoil Geometry and Aerodynamics”, 36th AIAA Aerospace Sciences Meeting,1998.
  • [9] Gordon Strikert,” Study on the relative motion of parafoil-load-systems”, Aerospace Science and Technology, Elsevier, May 2004.
  • [10] M. Mashud and A.Umemura,” Experimental Investigation of Aerodynamic Characteristics of a Paraglider Wing”, Transactions of JSASS (submitted)
Yıl 2010, Cilt: 2 Sayı: 4, 55 - 63, 01.12.2010

Öz

Kaynakça

  • [1] F. M. Rogallo , J. G. Lowry, D. R. Croom, and R.T. Taylor,” Preliminary Investigation of a Paraglider,” NASA TN D-443,1960.
  • [2] D. E. Hewes,” Free-Flight Investigation of Radio-Controlled Models with Parawing,” NASA TN D-927, 1961.
  • [3] P.G. Fournier and B.A. Bell,” Low Subsonic Pressure Distributions on Three Rigid Wings Simulating Paragliders With Varied Canopy Curvatures and Leading-Edge Sweep, NASA TN D-983, 1961.
  • [3] B. Gamse, K. W. Mort, and P. F. Yaggy,” Low-Speed Wind Tunnel Tests of A Large Scale Inflatable Structure Paraglider,” NASA TN D-2859, 1965.
  • [4] Ware, G.M., Hassell, J.L., “Wind-Tunnel Investigation of Ram-Air-Inflated All-Flexible Wings of Aspect Ratios 1.0 to 3.0”. NASA TM SX-1923, Langley Research Center, Hampton, VA, 1969.
  • [5] Goodrick, T.F., “Theoretical Study of the Longitudinal Stability of High-Performance Gliding Airdrop Systems”. AIAA Paper 75-1394, 5th Aerodynamic Decelerator Systems Conference,1975.
  • [6] Goodrick, T.F., “Scale Effects on Performance of Ram Air Wings”. AIAA Paper 84-0783, January 1984.
  • [7] Brown, G.J., “Tethered Parafoil Test Technique”. AIAA 89-0903-CP, January 1989. [8] C. Matos, R. Mahalingam, G. Ottinger , J. Klapper, R. Funk and N. Komerath,” Wind Tunnel Measurements of Parafoil Geometry and Aerodynamics”, 36th AIAA Aerospace Sciences Meeting,1998.
  • [9] Gordon Strikert,” Study on the relative motion of parafoil-load-systems”, Aerospace Science and Technology, Elsevier, May 2004.
  • [10] M. Mashud and A.Umemura,” Experimental Investigation of Aerodynamic Characteristics of a Paraglider Wing”, Transactions of JSASS (submitted)
Toplam 10 adet kaynakça vardır.

Ayrıntılar

Diğer ID JA65JV39SG
Bölüm Makaleler
Yazarlar

Md. Mahfuz Sarwar Bu kişi benim

Mohammad Mashud Bu kişi benim

Yayımlanma Tarihi 1 Aralık 2010
Yayımlandığı Sayı Yıl 2010 Cilt: 2 Sayı: 4

Kaynak Göster

APA Sarwar, M. M., & Mashud, M. (2010). Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider. International Journal of Engineering and Applied Sciences, 2(4), 55-63.
AMA Sarwar MM, Mashud M. Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider. IJEAS. Aralık 2010;2(4):55-63.
Chicago Sarwar, Md. Mahfuz, ve Mohammad Mashud. “Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider”. International Journal of Engineering and Applied Sciences 2, sy. 4 (Aralık 2010): 55-63.
EndNote Sarwar MM, Mashud M (01 Aralık 2010) Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider. International Journal of Engineering and Applied Sciences 2 4 55–63.
IEEE M. M. Sarwar ve M. Mashud, “Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider”, IJEAS, c. 2, sy. 4, ss. 55–63, 2010.
ISNAD Sarwar, Md. Mahfuz - Mashud, Mohammad. “Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider”. International Journal of Engineering and Applied Sciences 2/4 (Aralık 2010), 55-63.
JAMA Sarwar MM, Mashud M. Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider. IJEAS. 2010;2:55–63.
MLA Sarwar, Md. Mahfuz ve Mohammad Mashud. “Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider”. International Journal of Engineering and Applied Sciences, c. 2, sy. 4, 2010, ss. 55-63.
Vancouver Sarwar MM, Mashud M. Wing Cell Geometry and Pressure Distribution over The Surface of A Paraglider. IJEAS. 2010;2(4):55-63.

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