Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity PDF full book. Access full book title Wind-tunnel Investigation of Longitudinal Aerodynamic Characteristics of Three Propeller-driven VTOL Configurations in the Transition Speed Range, Including Effects of Ground Proximity by Richard E. Kuhn. Download full books in PDF and EPUB format.
Author: Richard E. Kuhn
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 134
Get Book Here
Book Description
Author: Richard E. Kuhn
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 134
Get Book Here
Book Description
Author: Richard E. Kuhn
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
Get Book Here
Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 448
Get Book Here
Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 860
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 544
Get Book Here
Book Description
Author: Kenneth W. Goodson
Publisher:
ISBN:
Category : Flaps (Airplanes)
Languages : en
Pages : 116
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 494
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 296
Get Book Here
Book Description
Author: Kenneth W. Goodson
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
Get Book Here
Book Description
"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.
