Download or read book Aerodynamic Characteristics of Low aspect ratio Wings in Close Proximity to the Ground written by Marvin P. Fink and published by . This book was released on 1961 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamic Characteristics of Low aspect ratio Wings in Close Proximity to the Ground written by Marvin P. Fink and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wind-tunnel investigation has been conducted to determine the effect of ground proximity on the aerodynamic characteristics of thick highly cambered rectangular wings with aspect ratios of 1, 2, 4, and 6. The results showed that, for these aspect ratios, as the ground was approached all wings experienced increases in lift-curve slope and reductions in induced drag which resulted in increases in lift-drag ratio. Although an increase in lift-curve slope was obtained for all aspect ratios as the ground was approached, the lift coefficient at an angle of attack of 0 degrees for any given aspect ratio remained nearly constant. The experimental results were in general agreement with Wieselsberger's ground-effect theory. As the wings approached the ground, there was an increase in static longitudinal stability at positive angles of attack. When operating in ground effect, all the wings had stability of height at positive angles of attack and instability of height at negative angles of attack. Wing-tip fairings on the wings with aspect ratios of 1 and 2 produced small increases in lift-drag ratio in ground effect. (Author).
Download or read book Effects of Ground Proximity on the Longitudinal Aerodynamic Characteristics of an Unswept Aspect ratio 10 Wing written by Arthur W. Carter and published by . This book was released on 1970 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground proximity effects of unswept aspect ratio 10 wing on longitudinal aerodynamic characteristics.
Download or read book Powered Low aspect ratio Wing In Ground Effect WIG Aerodynamic Characteristics written by James L. Thomas and published by . This book was released on 1979 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Ground Proximity on the Longitudinal Aerodynamic Characteristics of an Aspect ratio 1 Wing with and Without Wing tip Blowing written by Raymond E. Mineck and published by . This book was released on 1974 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Wind Tunnel Investigation of Ground Effect on the Aerodynamic Characteristics of Low Aspect Ratio Wings written by George Lewis Florman (CAPT, USAF.) and published by . This book was released on 1962 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low speed Longitudinal Aerodynamic Characteristics Associated with a Series of Low aspect ration Wings Having Variations in Leading Contour written by Bernard Spencer and published by . This book was released on 1962 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamics of a Lifting System in Extreme Ground Effect written by Kirill V. Rozhdestvensky and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the memory of a distinguished Russian engineer, Rostislav E. Alexeyev, who was the first in the world to develop the largest ground effect machine - Ekranoplan. One of Alexeyev's design concepts with the aerodynamic configuration of a jlying wing can be seen on the front page. The book presents a description of a mathematical model of flow past a lifting system, performing steady and unsteady motions in close proximity to the underlying solid surface (ground). This case is interesting for practical purposes because both the aerodynamic and the economic efficiency of the system near the ground are most pronounced. Use of the method of matched asymptotic expansions enables closed form solutions for the aerodynamic characteristics of the wings-in-ground effect. These can be used for design, identification, and processing of experimental data in the course of developing ground effect vehicles. The term extreme ground effect, widely used through out the book, is associated with very small relative ground clearances of the order of 10% or less. The theory of a lifting surface, moving in immediate proximity to the ground, represents one of the few limiting cases that can be treated analytically. The author would like to acknowledge that this work has been influenced by the ideas of Professor Sheila E. Widnall, who was the first to apply the matched asymptotics techniques to treat lifting flows with the ground effect. Saint Petersburg, Russia February 2000 Kirill V. Rozhdestvensky Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Download or read book Longitudinal Stability Characteristics of Low aspect ratio Wings Having Variations in Leading and Trailing edge Contours written by William P. Henderson and published by . This book was released on 1964 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Note written by and published by . This book was released on 1970 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamic Characteristics of Low aspect ratio Wings at High Supersonic Mach Numbers written by Edward F. Ulmann and published by . This book was released on 1953 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Wing Leading edge Deflection on Low speed Aerodynamic Characteristics of a Low aspect ratio Highly Swept Arrow wing Configuration written by Paul L. Coe and published by . This book was released on 1979 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Aspect Ratio on the Low speed Lateral Control Characteristics of Unswept Untapered Low aspect ratio Wings written by Rodger L. Naeseth and published by . This book was released on 1951 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of untapered, unswept, complete wings of apsect ratios 1.13, 2.13, 4.13, and 6.13 was investigated at a Mach number of 0.26 to determine the effect of aspect ratio on the lateral control characteristics of the wings equipped with 0.25-chord sealed ailerons of various spans and of various spanwise locations. Design charts are presented for computing aileron effectiveness of low-aspect-ratio, untapered, unswept wings. Experimental values of control effectivenesss are compared with values estimated by theoretical methods.
Download or read book A Review of the Planform Effects on the Low speed Aerodynamic Characteristics of Triangular and Modified Triangular Wings written by Kenneth Razak and published by . This book was released on 1966 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind tunnel Investigation of Single and Tandem Low aspect ratio Wings in Ground Effect written by William D. Hinshaw and published by . This book was released on 1964 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of end-plate and camber changes on the aerodynamic characteristics of five basic wings in ground effect were investigated by the image technique, and the effect of gap-chord and aspect ratio was investigated on tandem-wing combinations over a ground board. For a given end-plate structural clearance height, the addition of end plates shows an increase in L/D for AR-1; however, better L/D is obtained with end plates off for AR-4. For a given wing trailing edge structural clearance height, end plates show considerable improvement in L/D. Improved L/D is also noted for (a) small down flap deflection, (b) contoured end plates, (c) wedge-bottom end plates, (d) thin wing, and (e) high aspect ratio. Static stability improves as the ground is approached and is particularly evident for the tandem-wing combinations. Limited data were obtained in roll and yaw. (Author).
Download or read book Effects of Wing Leading edge Deflection on Low speed Aerodynamic Characteristics of a Low aspect ratio Highly Swept Arrow wing Configuration written by P. L. Coe (Jr) and published by . This book was released on 1979 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Ground Proximity on the Longitudinal Lateral and Control Aerodynamic Characteristics of a Tilt wing Four propeller V STOL Model written by Kenneth W. Goodson and published by . This book was released on 1967 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
