Download Full eBooks in PDF
A Wind Tunnel Investigation Of A 4 Foot Diameter Ducted Fan Mounted On The Tip Of A Semispan Wing Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of A Wind Tunnel Investigation Of A 4 Foot Diameter Ducted Fan Mounted On The Tip Of A Semispan Wing book. This book definitely worth reading, it is an incredibly well-written.
Author : Paul F. Yaggy,Kenneth W. Mort
Publisher : Unknown
Page : 36 pages
File Size : 45,6 Mb
Release : 1961
Category : Airplanes
ISBN : UIUC:30112106740704
Author : Kenneth W. Mort,Paul F. Yaggy
Publisher : Unknown
Page : 38 pages
File Size : 47,6 Mb
Release : 1962
Category : Airplanes
ISBN : UIUC:30112106637405
Power, free-stream velocity, and duct angle of attack were varied at several wing angles of attack to define the aerodynamic characteristics of the ducted fan, wing, and of the ducted fan wing together. At large duct angles of attack, the inside of the upstream duct lip stalled causing a rapid change in the duct pitching moments and an accompanying increase in the power required. At low horizontal velocities, this lip stall would probably limit the rate of descent of a vehicle with a wing-tip-mounted ducted fan. During low-speed, level, unaccelerated flight (30 to 80 knots) it appeared that a vehicle, with a configuration similar to that examined, would require less power if it were supported by a wing and ducted fans than if it were supported only by ducted fans. (Author).
Author : Anonim
Publisher : Unknown
Page : 204 pages
File Size : 47,8 Mb
Release : 1971
Category : Electronic
ISBN : MINN:319510008463528
Author : Michael D. Falarski
Publisher : Unknown
Page : 60 pages
File Size : 40,5 Mb
Release : 1971
Category : Short take-off and landing aircraft
ISBN : UIUC:30112106747683
The longitudinal aerodynamic characteristics of a semispan wing dellected-slipstream configuration with a double-slotted flap and and auxiliary wing were determined. The model was powered by two low-pressure-ratio ducted fans. A comparison of static test results with results obtained from various propeller-driven configurations indicates that the turning effectiveness of fan-powered deflected-slipstream configurations can be correlated with propeller-powered configurations with the same flap-chord to slipstream-diameter ratio. The turning effectiveness of the auxiliary wing was essentially the same as would be produced by a conventional slotted flap system with the same flap-chord to slipstream-diameter ratio. The auxiliary wing reduced the thrust required at low speeds as would be expected due to the increase in lifting surface area.
Author : Anonim
Publisher : Unknown
Page : 450 pages
File Size : 44,7 Mb
Release : 1960
Category : Aeronautics
ISBN : UVA:X004173290
Author : Kalman J. Grunwald
Publisher : Unknown
Page : 64 pages
File Size : 49,5 Mb
Release : 1962
Category : Aerodynamic load
ISBN : UIUC:30112106593202
Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 448 pages
File Size : 53,7 Mb
Release : 1960
Category : Aeronautics
ISBN : UIUC:30112032439504
Author : Kenneth W. Mort
Publisher : Unknown
Page : 38 pages
File Size : 40,5 Mb
Release : 1964
Category : Ducted fans
ISBN : UIUC:30112106873786
Author : Paul F. Yaggy,Kenneth W. Goodson
Publisher : Unknown
Page : 20 pages
File Size : 44,7 Mb
Release : 1961
Category : Aerodynamics
ISBN : UIUC:30112106741686
Author : Kenneth W. Goodson,Kalman J. Grunwald
Publisher : Unknown
Page : 52 pages
File Size : 52,8 Mb
Release : 1962
Category : Aerodynamics
ISBN : UIUC:30112106914838
"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 : Antonio Ferri,D. Küchemann,L. H. G. Sterne
Publisher : Elsevier
Page : 252 pages
File Size : 45,8 Mb
Release : 2014-12-02
Category : Technology & Engineering
ISBN : 9781483224879
Progress in Aeronautical Sciences, Volume 3 provides information pertinent to the fundamental aspects of aerodynamics. This book covers a variety of topics related to the field of aerodynamics, including turbulence research, atmospheric velocity, hypersonic research, swept wing design, and ducted propellers. Organized into four chapters, this volume begins with an overview of the aerodynamics of swept-winged aircraft. This text then surveys the state of knowledge regarding the aerodynamics of ducted propellers. Other chapters consider hypersonic facilities and provide the reader with a balanced review of the bewildering multiplicity of means for experimenting with hypersonic flows. This book discusses as well the simulation of hypersonic flight conditions. The final chapter deals with gust research and reviews some of the activities and studies of atmospheric turbulence by both the meteorologists and engineers in an effort to correlate, collect, and summarize these results. This book is a valuable resource for design and aeronautical engineers.
Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 128 pages
File Size : 49,6 Mb
Release : 1960-07
Category : Electronic
ISBN : STANFORD:36105024165701
Author : Kalman J. Grunwald,Kenneth W. Goodson
Publisher : Unknown
Page : 36 pages
File Size : 54,7 Mb
Release : 1962
Category : Propulsion systems
ISBN : UIUC:30112106590604
Author : Marc de Piolenc,George E. Wright Jr.
Publisher : Lulu.com
Page : 182 pages
File Size : 41,6 Mb
Release : 2024-07-01
Category : Electronic
ISBN : 9780359104901
Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 1318 pages
File Size : 48,8 Mb
Release : 1962
Category : Aeronautics
ISBN : MINN:31951D00118674L
