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Author : Charles Horton Zimmerman
Publisher :
ISBN 13 :
Total Pages : 530 pages
Book Rating : 4.F/5 ( download)
Download or read book Aerodynamic Characteristics of Several Airfoils of Low Aspect Ratio written by Charles Horton Zimmerman and published by . This book was released on 1935 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arthur W. Carter
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effect of Ground Proximity on the Aerodynamic Characteristics of Aspect-ratio-1 Airfoils with and Without End Plates written by Arthur W. Carter and published by . This book was released on 1961 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made to determine the effect of ground proximity on the aerodynamic characteristics of aspect-ratio-1 airfoils. The investigation was made with the model moving over the water in a towing tank in order to eliminate the effects of wind-tunnel walls and of boundary layer on ground boards at small ground clearances. The results indicated that, as the ground was approached, the airfoils experienced an increase in lift-curve slope and a reduction in induced drag thus, lift-drag ratio was increased. As the ground was approached, the profile drag remained essentially constant for each airfoil. Near the ground, the addition of end plates to the airfoil resulted in a large increase in lift-drag ratio. The lift characteristics of the airfoils indicated stability of height at positive angles of attack and instability of height at negative angles; therefore, the operating range of angles of attack would be limited to positive values. At positive angles of attack, the static longitudinal stability was increased as the height above the ground was reduced. Comparison of the experimental data with Wieselsberger's ground-effect theory (NACA Technical Memorandum 77) indicated generally good agreement between experiment and theory for the airfoils without end plates.
Author : Isadore Edward Garrick
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.3/5 (243 download)
Download or read book Aerodynamic Characteristics of a Large Number of Airfoils Tested in the Variable-density Wind Tunnel written by Isadore Edward Garrick and published by . This book was released on 1938 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Raymond F. Anderson
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Aerodynamic Characteristics of Three Tapered Airfoils Tested in the Variable Density Wind Tunnel written by Raymond F. Anderson and published by . This book was released on 1931 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains the lift, drag, and moment characteristics of tapered Clark Y, Gottingen 398, and U.S.A. 45 airfoils as obtained from tests made in the Variable Density Wind Tunnel. The results are given at both low and high Reynolds numbers to show scale effect and to provide data for use in airplane design.
Author : Thomas V. Bollech
Publisher :
ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (259 download)
Download or read book Experimental and Calculated Characteristics of Several High-aspect-ratio Tapered Wings Incorporated NACA 44-series, 230-series, and Low-drag 64-series Airfoil Sections written by Thomas V. Bollech and published by . This book was released on 1948 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains a comparison of the theoretical and experimental aerodynamic characteristics of three wings having similar plan forms and root- and tip-chord thickness ratios with aspect ratio of 10, taper ratio 2.5. The airfoil sections incorporated in the wings were the NACA 44-series, 64-series, and 230-series. The results show the effects of airfoil section on the characteristics of tapered wings for an approximate Reynolds number range of 2,000,000 to 5,000,000.
Author : Edward C. Polhamus
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (719 download)
Download or read book Aerodynamic Characteristics of a Wing with Unswept Quarter-chord Line, Aspect Ratio 2, Taper Ratio 0.78, and NACA 65A004 Airfoil Section written by Edward C. Polhamus and published by . This book was released on 1950 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aerodynamic characteristics of a low-aspect-ratio wing have been investigated in the Langley high-speed 7- by 10-foot tunnel over a Mach number range of 0.60 to 1.17 by use of the transonic bump technique. The results include lift, drag, pitching-moment, and root bending moment for a wing having an unswept quarter-chord line, aspect ratio 2, taper ratio 0.78, and an NACA 65A004 airfoil section.
Author : Albert E. Von Doenhoff
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.3/5 (126 download)
Download or read book Aerodynamic Characteristics of the NACA 747A315 and 747A415 Airfoils from Tests in the NACA Two-dimensional Low-turbulence Pressure Tunnel written by Albert E. Von Doenhoff and published by . This book was released on 1944 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: Two low-drag airfoils, the NACA 747A315 and the NACA 747A415, designed to have reduced pitching moments about the quarter-chord point and moderately high values of the design lift coefficient have been tested in the NACA two-dimensional low-turbulence pressure tunnel. Section lift, drag, and pitching-moment coefficients are presented for Reynolds numbers of 3 x 106, 6 x 106, and 9 x 106, together with section lift and section drag data for a Reynolds number of 6 x 106 for the same airfoils with roughened leading edges.
Author : Bennie W. Cocke
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (249 download)
Download or read book The Aerodynamic Characteristics of an Aspect-ratio-20 Wing Having Thick Airfoil Sections and Employing Boundary-layer Control by Suction written by Bennie W. Cocke and published by . This book was released on 1953 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been conducted to study the aerodynamic characteristics of an aspect-ration-20 wing having thick airfoil sections and employing boundary-layer control by suction. Data from model tests in both the Langley full-scale tunnel and the Langley low-turbulence pressure tunnels are included. The results indicate the effects of varying suction flow rate, suctioin-slot configurations, wing surface condition, flap deflection, and Mach number.
Author : William B. Kemp
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.3/5 (91 download)
Download or read book Aerodynamic Characteristics at Small Scale and a Mach Number of 1.38 of Untapered Wings Having M and W Plan Forms written by William B. Kemp and published by . This book was released on 1954 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bernard N. Daley
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.3/5 (91 download)
Download or read book Aerodynamic Characteristics of Several 6-percent-thick Airfoils at Angles of Attack from 0 to 20 Degrees at High Subsonic Speeds written by Bernard N. Daley and published by . This book was released on 1949 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional tests of eight 6-percent-thick symmetrical airfoils of the supersonic and subsonic types were conducted in the Langley rectangular high-speed tunnel. The aerodynamic characteristics of each of the airfoils have been determined from the measured pressure data. These results showed that the lift-curve slope of each of the airfoils decreased rapidly to a positive value approaching zero at angles of attack near 9 degrees and roughly maintained this value up to the highest angle of attack tested.
Author : Kenneth E. Ward
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.3/5 (91 download)
Download or read book The Effect of Small Variations in Profile of Airfoils written by Kenneth E. Ward and published by . This book was released on 1931 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: These tests show that small changes in airfoil contours, resulting from variations in the specified ordinates, have a sufficiently large effect upon the airfoil characteristics to justify the taking of great care in the specification of ordinates for the construction of models.
Author : Bernard Spencer
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (249 download)
Download or read book Low-speed Longitudinal Aerodynamic Characteristics Associated with a Series of Low-aspect-ratio Wings Having Variations in Leading-edge Contour written by Bernard Spencer and published by . This book was released on 1962 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 780 pages
Book Rating : 4.:/5 (31 download)
Download or read book Technical Note written by and published by . This book was released on with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Advisory Committee for Aeronautics
Publisher :
ISBN 13 :
Total Pages : 812 pages
Book Rating : 4.E/5 ( download)
Download or read book Technical Note - National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert J. McGhee
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (317 download)
Download or read book Low-speed Aerodynamic Characteristics of a 17-percent-thick Medium Speed Airfoil Designed for General Aviation Applications written by Robert J. McGhee and published by . This book was released on 1980 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind tunnel tests were conducted to determine the low speed two dimensional aerodynamic characteristics of a 17 percent thick medium speed airfoil (MS(1)-0317) designed for general aviation applications. The results were compared with data for the 17 percent thick low speed airfoil (LS(1)-0417) and the 13 percent thick medium speed airfoil (MS(1)-0313). Theoretical predictions of the drag rise characteristics of this airfoil are also provided. The tests were conducted in the Langley low turbulence pressure tunnel over a Mach number range from 0.10 to 0.32, a chord Reynolds number range from 2 million to 12 million, and an angle of attack range from about -8 to 20 deg.
Author : Aeronautical Research Council
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (32 download)
Download or read book Aerodynamic Characteristics of Rectangular Wings of Small Aspect Ratio written by Aeronautical Research Council and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James L. Amick
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.3/5 (91 download)
Download or read book Low Reynolds Number Aerodynamics of Flapped Airfoils at Supersonic Speeds written by James L. Amick and published by . This book was released on 1958 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
