Download or read book Effect of Airfoil Profile of Symmetrical Sections on the Low speed Rolling Derivatives of 45 Sweptback wing Models of Aspect Ratio 2 61 written by William Letko and published by . This book was released on 1949 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made in the Langley stability tunnel to determine the effect of airfoil profile of symmetrical sections on the rolling derivatives of three untapered wings having 45 deg sweepback. The wings had the following profiles normal to the leading edge: biconvex (12% thick), NACA 65 sub 1 -012, and NACA 0012. The AR for each wing was 2.61. Calculations were made to determine the effect of different wing profiles on the stability boundaries and motions at subsonic speeds of a typical transonic airplane configuration. Results indicate that increasing the sharpness of the leading edge of the airfoil decreased the range of lift coefficients over which the derivatives maintained their initial trends and usually decreased the maximum values of the derivatives obtained in the unstalled range. Results of the calculations of the dynamic stability of the airplane configuration show only small changes in stability due to changes in airfoil profile.
Download or read book Effect of Airfoil Profile of Symmetrical Sections on the Low speed Rolling Derivatives of 45 Degrees Sweptback wing Models of Aspect Ratio 2 61 written by William Letko and published by . This book was released on 1949 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Airfoil Profile of Symmetrical Sections on the Low Speed Rolling Derivatives of 45 Deg Sweptback Wing Models of Aspect Ratio 2 61 written by and published by . This book was released on 1949 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was made in the Langley stability tunnel to determine the effect of airfoil profile of symmetrical sections on the rolling derivatives of three untapered wings having 45 deg sweepback. The wings had the following profiles normal to the leading edge: biconvex (12% thick), NACA 65 sub 1 -012, and NACA 0012. The AR for each wing was 2.61. Calculations were made to determine the effect of different wing profiles on the stability boundaries and motions at subsonic speeds of a typical transonic airplane configuration. Results indicate that increasing the sharpness of the leading edge of the airfoil decreased the range of lift coefficients over which the derivatives maintained their initial trends and usually decreased the maximum values of the derivatives obtained in the unstalled range. Results of the calculations of the dynamic stability of the airplane configuration show only small changes in stability due to changes in airfoil profile.
Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1956 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Airfoil Profile of Symmetrical Sections on the Low speed Static stability and Yawing Derivatives of 45 Degree Sweptback Wing Models of Aspect Ratio 2 61 written by William Letko and published by . This book was released on 1948 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by and published by . This book was released on 1949 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book USAF Stability and Control Datcom written by Douglas Aircraft Company and published by . This book was released on 1975 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Aspect Ratio and Sweepback on the Low speed Lateral Control Characteristics of Untapered Low aspect ratio Wings Equipped with Retractable Ailerons written by Jack Fischel and published by . This book was released on 1951 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results and discussion are presented of a low-speed lateral-control investigation of three untapered unswept wings of aspect ratio 1.13, 2.13, and 4.13 and an untapered 45 degrees sweptback wing of aspect ratio 2.09 equipped with 0.60-semispan retractable ailerons having various projections. Continuous-span ailerons were tested at outboard stations on the unswept wings, and plain (continuous span) and stepped (segmented) ailerons were tested at various spanwise stations with and without simulated actuating arms on the sweptback wing.
Download or read book Effect of Longitudinal Wings Position on the Pressure Characteristics at Transonic Speeds of a 45 Sweptback Wing fuselage Model written by William Solomon and published by . This book was released on 1953 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lift Drag and Pitching Moment of Low aspect ratio Wings at Subsonic and Supersonic Speeds written by John C. Heitmeyer and published by . This book was released on 1951 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Twist and Camber on the Low speed Longitudinal Stability Characteristics of a 45 Swept back Wing of Aspect Ratio 8 at Reynolds Numbers from 1 5 X 106 to 4 8 X 10 as Determined by Pressure Distributions Force Tests and Calculations written by George L. Pratt and published by . This book was released on 1952 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Three Tapered 45 Sweptback Cambered and Twisted Wings Covering a Simultaneous Variation in Aspect Ratio and Thickness Ratio and of One Related Symmetrical Wing at Transonic Speeds by the Wing flow Method written by Harold I. Johnson and published by . This book was released on 1953 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Mass Distribution on the Low speed Dynamic Lateral Stability and Control Characteristics of a Model with a 45 Sweptback Wing written by Donald E. Hewes and published by . This book was released on 1951 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The trends in lateral stability and control produced variations of the mass distribution were determined for a model with a 45 degree sweptback wing. Calculations were made to correlate the trends determined by theory with those determined from tests of a free-flying dynamic model in the Langley free-flight tunnel.
Download or read book Effect of Reynolds Number on the Lateral stability Derivatives at Low Speed of Swept back and Delta wing fuselage Combinations Oscillating in Yaw written by Charles P. Llewellyn and published by . This book was released on 1960 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation has been made to determine the effect of Reynolds number on the lateral-stability derivatives at low speed of sweptback- and delta-wing-fuselage combinations. Results were obtained from the models oscillating in yaw over an angle-of-attack ...
Download or read book Aerospace Engineering Index written by and published by . This book was released on 1950 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerodynamic Characteristics of a Wing with Quarter chord Line Swept Back 45 Degrees Aspect Ratio 4 Taper Ratio 0 3 and NACA 65A006 Airfoil Section written by Boyd C. Myers and published by . This book was released on 1949 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the results of the investigation of a wing-alone and wing-fuselage configuration employing a wing with the quarter-chord line swept back 45 degrees, with aspect ratio 4, taper ratio 0.3, and an NACA 65A006 airfoil section. Lift, drag, pitching moment, and root bending moment were obtained for these configurations. In addition, effective downwash angles and dynamic-pressure characteristics in the region of a probable tail location were also obtained for these configurations and are presented for a range of tail heights at one tail length. In order to expedite the publishing of these data, only a brief analysis is included.
Download or read book Aeronautical Engineering Index written by and published by . This book was released on 1954 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
