Wind Tunnel Investigation Of Longitudinal Aerodynamic Characteristics Of Three Propeller Driven Vtol Configurations In The Transition Speed Range Including Effects Of Ground Proximity
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Author | : Richard E. Kuhn |
Publisher | : |
Total Pages | : 134 |
Release | : 1960 |
Genre | : Aerodynamics |
ISBN | : |
Download Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity Book in PDF, Epub and Kindle
Author | : Richard E. Kuhn |
Publisher | : |
Total Pages | : 128 |
Release | : 1960 |
Genre | : |
ISBN | : |
Download Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity Book in PDF, Epub and Kindle
Author | : United States. National Aeronautics and Space Administration |
Publisher | : |
Total Pages | : 498 |
Release | : 1958 |
Genre | : |
ISBN | : |
Download Index of N A S A Technical Publications Book in PDF, Epub and Kindle
Author | : United States. National Aeronautics and Space Administration |
Publisher | : |
Total Pages | : |
Release | : 1960-07 |
Genre | : |
ISBN | : |
Download Index to NASA Technical Publications Book in PDF, Epub and Kindle
Author | : United States. National Advisory Committee for Aeronautics |
Publisher | : |
Total Pages | : 860 |
Release | : 1957 |
Genre | : Aeronautics |
ISBN | : |
Download Index of NACA Technical Publications Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 544 |
Release | : 1968 |
Genre | : |
ISBN | : |
Download NASA Technical Note Book in PDF, Epub and Kindle
Author | : Kenneth W. Goodson |
Publisher | : |
Total Pages | : 116 |
Release | : 1966 |
Genre | : Flaps (Airplanes) |
ISBN | : |
Download Longitudinal Aerodynamic Characteristics of a Flapped Tilt-wing Four-propeller V/stol Transport Model Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 494 |
Release | : 1959 |
Genre | : Aeronautics |
ISBN | : |
Download Index of NASA Technical Publications Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 296 |
Release | : 1959 |
Genre | : Aeronautics |
ISBN | : |
Download A Selected Listing of NASA Scientific and Technical Reports for ... Book in PDF, Epub and Kindle
Author | : Kenneth W. Goodson |
Publisher | : |
Total Pages | : 52 |
Release | : 1962 |
Genre | : Aerodynamics |
ISBN | : |
Download Aerodynamic Characteristics of a Powered Semispan Tilting-shrouded-propeller VTOL Model in Hovering and Transition Flight Book in PDF, Epub and Kindle
"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.