Download or read book Effect of Milling Machine Roughness and Wing Dihedral on the Supersonic Aerodynamic Characteristics of a Highly Swept Wing written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-06 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted to assess the effect of surface finish on the longitudinal and lateral aerodynamic characteristics of a highly-swept wing at supersonic speeds. A study of the effects of wing dihedral was also made. Included in the tests were four wing models: three models having 22.5 degrees of outboard dihedral, identical except for surface finish, and a zero-dihedral, smooth model of the same planform for reference. Of the three dihedral models, two were taken directly from the milling machine without smoothing: one having a maximum scallop height of 0.002 inches and the other a maximum scallop height of 0.005 inches. The third dihedral model was handfinished to a smooth surface. Tests were conducted in Test Section 1 of the Unitary Plan Wind Tunnel at NASA-Langley over a range of Mach numbers from 1.8 to 2.8, a range of angle of attack from -5 to 8 degrees, and at a Reynolds numbers per foot of 2 x 10(6). Selected data were also taken at a Reynolds number per foot of 6 x 10(6). Drag coefficient increases, with corresponding lift-drag ratio decreases were the primary aerodynamic effects attributed to increased surface roughness due to milling machine grooves. These drag and lift-drag ratio increments due to roughness increased as Reynolds number increased. Darden, Christine M. Langley Research Center...
Download or read book Effect of Milling Machine Roughness and Wing Dihedral on the Supersonic Aerodynamic Characteristics of a Highly Swept Wing written by Christine M. Darden and published by . This book was released on 1989 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Milling Machine Roughness and Wing Dihedral on the Supersonic Aerodynamic Characteristics of a Highly Swept Wing written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Subsonic Aerodynamic Characteristics of a Highly Swept Fixed Wing Configuration with Variation in Wing Dihedral Angle written by William P. Henderson and published by . This book was released on 1971 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
