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Author : Robert H. Kirby
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (31 download)
Download or read book Aerodynamic Characteristics of Propeller-driven VTOL Aircraft written by Robert H. Kirby and published by . This book was released on 1961 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert H. Kirby
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (689 download)
Download or read book Aerodynamic Characteristics of Propeller-driven VTOL Aircraft written by Robert H. Kirby and published by . This book was released on 1961 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard E. Kuhn
Publisher :
ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (31 download)
Download or read book Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity written by Richard E. Kuhn and published by . This book was released on 1960 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth W. Goodson
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (31 download)
Download or read book Aerodynamic Characteristics of a Powered Semispan Tilting-shrouded-propeller VTOL Model in Hovering and Transition Flight written by Kenneth W. Goodson and published by . This book was released on 1962 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An investigation of the aerodynamic characteristics of a powered semispan tilting-shrouded-propeller configuration has been conducted in the 17-foot test section of the Langley 300-MPH 7- by 10-foot tunnel. The wing had an aspect ratio of 2.67 (based on wing span of 60 inches), a taper ratio of 0.67, and an NACA 2418 airfoil section with a 15-inch-diameter shrouded propeller mounted on the tip. The test results show that large nose-up pitching moments are obtained at transitional speeds of about 40 knots and duct angle of about 70°. Decelerating flight procedures further increases in the nose-up moment. Ground proximity reduces the nose-up pitching moments. The large nose-up moments can be trimmed by use of duct-exit control vanes. The results show that unloading the duct (shroud) by flying at a wing angle of attack of 15° reduces the power required by about 30 percent at 50 knots. Duct-lip stall produces large increases in power required. The results in general show that full-scale aerodynamic simulation can be made with small-scale wind-tunnel models if duct-lip separation at low Reynolds numbers is avoided."--Summary.
Author : Kalman J. Grunwald
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (31 download)
Download or read book Aerodynamic Characteristics of a Four-propeller Tilt-wing VTOL Model with Twin Vertical Tails, Including Effects of Ground Proximity written by Kalman J. Grunwald and published by . This book was released on 1961 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John W. Draper
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.3/5 (91 download)
Download or read book Investigation of the Aerodynamic Characteristics of a Model Wing-propeller Combination and of the Wing and Propeller Separately at Angles of Attack Up to 90° written by John W. Draper and published by . This book was released on 1954 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of an investigation conducted in the Langley 300 mph 7- 10-foot wind tunnel for the purpose of determining the aerodynamic characteristics of a model wing-propeller combination, and of the wing and propeller separately at angles of attack up to 90 degrees. The tests covered thrust coefficients corresponding to free-stream velocities from zero forward speed to the normal range of cruising speeds. The results indicate that increasing the thrust coefficient increases the angle of attack for maximum lift and greatly diminishes the usual reduction in lift above the angle of attack for maximum lift.
Author : Kenneth W. Goodson
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (31 download)
Download or read book Longitudinal Aerodynamic Characteristics of a Flapped Tilt-wing Four-propeller V/stol Transport Model written by Kenneth W. Goodson and published by . This book was released on 1966 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edwin E. Davenport
Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (31 download)
Download or read book Transition Characteristics of a VTOL Aircraft Powered by Four Ducted Tandem Propellers written by Edwin E. Davenport and published by . This book was released on 1964 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard E. Kuhn
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (31 download)
Download or read book Lateral Stability and Control Characteristics of a Four-propeller Deflected-slipstream VTOL Model Including the Effects of Ground Proximity written by Richard E. Kuhn and published by . This book was released on 1961 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard E. Kuhn
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (249 download)
Download or read book Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity written by Richard E. Kuhn and published by . This book was released on 1960 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard J. Margason
Publisher :
ISBN 13 :
Total Pages : 186 pages
Book Rating : 4.:/5 (31 download)
Download or read book Aerodynamic Characteristics of Twin-propeller Deflected-slipstream STOL Airplane Model with Boundary-layer Control on Inverted V-tail written by Richard J. Margason and published by . This book was released on 1968 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William A. Newsom
Publisher :
ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (31 download)
Download or read book Aerodynamic Characteristics of Four-duct Tandem VTOL-aircraft Configurations written by William A. Newsom and published by . This book was released on 1963 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Louis P. Tosti
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (31 download)
Download or read book Aerodynamic Characteristics of a 1/4-inch Scale Model a Tilt-wing VTOL Aircraft at High Angles of Wing Incidence written by Louis P. Tosti and published by . This book was released on 1960 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chester H. Wolowicz
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (31 download)
Download or read book Lateral-directional Aerodynamic Characteristics of Light, Twin-engine, Propeller-driven Airplanes written by Chester H. Wolowicz and published by . This book was released on 1972 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical procedures and design data for predicting the lateral-directional static and dynamic stability and control characteristics of light, twin engine, propeller driven airplanes for propeller-off and power-on conditions are reported. Although the consideration of power effects is limited to twin engine airplanes, the propeller-off considerations are applicable to single engine airplanes as well. The procedures are applied to a twin engine, propeller driven, semi-low-wing airplane in the clean configuration through the linear lift range. The calculated derivative characteristics are compared with wind tunnel and flight data. Included in the calculated characteristics are the spiral mode, roll mode, and Dutch roll mode over the speed range of the airplane.
Author : John F. Ward
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (31 download)
Download or read book Structural-loads Surveys on Two Tilt-wing VTOL Configurations written by John F. Ward and published by . This book was released on 1961 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chester H. Wolowicz
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (31 download)
Download or read book Longitudinal Aerodynamic Characteristics of Light, Twin-engine, Propeller-driven Airplanes written by Chester H. Wolowicz and published by . This book was released on 1972 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Norman S. Land
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.3/5 (126 download)
Download or read book Effect of Powered Propellers on the Aerodynamic Characteristics and the Porpoising Stability of a Dynamic Model of a Long-range Flying Boat written by Norman S. Land and published by . This book was released on 1943 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: The tests described in this report were made on a 1/8-full-size model of a large, long-range, twin-engine flying boat in NACA tank no. 1. The airplane had a wing loading of 43.9 pounds per square foot and a power loading of 11.5 pounds per horsepower. Its arrangement was such that 34.2 percent of the wing area and 56.1 percent of the horizontal tail area were included within the fore-and-aft projection of the propeller disks. The model was fitted with leading-edge slats to make the angle of attack for maximum lift coefficient correspond with that of the airplane at the low Reynolds number associated with the tank tests (3.28 x 105 based on the mean aerodynamic chord and the get-away speed of the model). The model was equipped with two three-blade metal propellers of scale diameter and form, power for which was furnished by two variable-frequency alternating-current motors. Sufficient power was available to develop scale thrust with the propellers. The tests were divided into two parts: (1) aerodynamic tests to determine the effect of the slipstream and thrust from the powered propellers on the lift and trimming-moment characteristics, and (2) hydrodynamic tests to determine the effect of the powered propellers on the range of stable locations of the center of gravity.
