Author: D. M. MartinPublisher:
ISBN:
Category : Fairings
Languages : en
Pages : 132
Book Description
Experimental Investigation of Advanced Hub and Pylon Fairing Configurations to Reduce Helicopter Drag
Author: D. M. MartinPublisher:
ISBN:
Category : Fairings
Languages : en
Pages : 132
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 950
Book Description
Monthly Catalog of United States Government Publications
Author: Scientific and Technical Aerospace Reports
Author: Experimental Investigation of Advanced Hub and Pylon Fairing Configurations to Reduce Helicopter Drag
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722387679
Category :
Languages : en
Pages : 96
Book Description
New hub and pylon fairing designs were tested on a one-fifth scale Bell Helicopter Textron Model 222 helicopter with a bearingless main rotor hub. The blades were not installed for this test. The fairings were designed by NASA and Bell Helicopter Textron under a joint program and tested in the Ames Research Center 7-by 10-Foot Wind Tunnel. All six aircraft forces and moments were measured using the tunnel scales system. Previous research has identified the integrated hub and pylon fairing approach as the most efficient in reducing helicopter drag. Three hub fairings and three pylon fairings were tested (in various combinations) resulting in a total of 16 different configurations, including the baseline helicopter model without fairings. The geometry of the new fairings is described in detail. Test results are presented in the form of plots of the six model forces and moments. The data show that model drag can be reduced by as much as 20 percent by combining a small hub fairing (that has a circular arc upper surface and a flat lower surface) integrated with a nontapered pylon fairing. To minimize drag, the gap between the lower surface of the hub and upper surface of the pylon fairing must be kept to a minimum. Results show that the aerodynamic effects of the fairings on static longitudinal and directional stability can also be important. Martin, D. M. and Mort, R. W. and Young, L. A. and Squires, P. K. Ames Research Center...
Government Reports Announcements & Index
Author: Government Reports Annual Index
Author: Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1224
Book Description
Aeronautical Engineering
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 204
Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Author: 
Author: