Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721087426
Category :
Languages : en
Pages : 126
Book Description
A parametric cranked delta planform study has been conducted in the Langley 14- by 22-Foot Subsonic Tunnel with the following objectives: (1) to evaluate the vortex flap design methodology for cranked delta wings, (2) to determine the influence of leading-edge sweep and the outboard wing on vortex flap effectiveness, (3) to evaluate novel flow control concepts, and (4) to validate unstructured grid Euler computer code predictions with modeled vortex and trailing-edge flaps. Two families of cranked delta planforms were investigated. One family had constant aspect ratio, while the other had a constant nondimensional semispan location of the leading-edge break. The inboard leading-edge sweep of the planforms was varied between 68 deg., 71 deg., and 74 deg., while outboard leading-edge sweep was varied between 48 deg. and 61 deg. Vortex flaps for the different planforms were designed by an analytical vortex flap design method. The results indicate that the effectiveness of the vortex flaps was only slightly influenced by the variations in the parametric planforms. The unstructured grid Euler computer code was successfully used to model the configurations with vortex flaps. The vortex trap concept was successfully demonstrated. Kjerstad, Kevin J. and Campbell, Bryan A. and Gile, Brenda E. and Kemmerly, Guy T. Langley Research Center RTOP 537-03-22-02
Investigation of Vortex Flaps and Other Flow Control Devices on Generic High-Speed Civil Transport Planforms
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721087426
Category :
Languages : en
Pages : 126
Book Description
A parametric cranked delta planform study has been conducted in the Langley 14- by 22-Foot Subsonic Tunnel with the following objectives: (1) to evaluate the vortex flap design methodology for cranked delta wings, (2) to determine the influence of leading-edge sweep and the outboard wing on vortex flap effectiveness, (3) to evaluate novel flow control concepts, and (4) to validate unstructured grid Euler computer code predictions with modeled vortex and trailing-edge flaps. Two families of cranked delta planforms were investigated. One family had constant aspect ratio, while the other had a constant nondimensional semispan location of the leading-edge break. The inboard leading-edge sweep of the planforms was varied between 68 deg., 71 deg., and 74 deg., while outboard leading-edge sweep was varied between 48 deg. and 61 deg. Vortex flaps for the different planforms were designed by an analytical vortex flap design method. The results indicate that the effectiveness of the vortex flaps was only slightly influenced by the variations in the parametric planforms. The unstructured grid Euler computer code was successfully used to model the configurations with vortex flaps. The vortex trap concept was successfully demonstrated. Kjerstad, Kevin J. and Campbell, Bryan A. and Gile, Brenda E. and Kemmerly, Guy T. Langley Research Center RTOP 537-03-22-02
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721087426
Category :
Languages : en
Pages : 126
Book Description
A parametric cranked delta planform study has been conducted in the Langley 14- by 22-Foot Subsonic Tunnel with the following objectives: (1) to evaluate the vortex flap design methodology for cranked delta wings, (2) to determine the influence of leading-edge sweep and the outboard wing on vortex flap effectiveness, (3) to evaluate novel flow control concepts, and (4) to validate unstructured grid Euler computer code predictions with modeled vortex and trailing-edge flaps. Two families of cranked delta planforms were investigated. One family had constant aspect ratio, while the other had a constant nondimensional semispan location of the leading-edge break. The inboard leading-edge sweep of the planforms was varied between 68 deg., 71 deg., and 74 deg., while outboard leading-edge sweep was varied between 48 deg. and 61 deg. Vortex flaps for the different planforms were designed by an analytical vortex flap design method. The results indicate that the effectiveness of the vortex flaps was only slightly influenced by the variations in the parametric planforms. The unstructured grid Euler computer code was successfully used to model the configurations with vortex flaps. The vortex trap concept was successfully demonstrated. Kjerstad, Kevin J. and Campbell, Bryan A. and Gile, Brenda E. and Kemmerly, Guy T. Langley Research Center RTOP 537-03-22-02
Investigation of Vortex Flaps and Other Flow Control Devices on Generic High-Speed Civil Transport Planforms
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
Book Description
NASA Langley Scientific and Technical Information Output: 1999
Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 182
Book Description
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 182
Book Description
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 576
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 576
Book Description
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 836
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 836
Book Description
Journal of Aircraft
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 636
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 636
Book Description
International Aerospace Abstracts
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 530
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 530
Book Description
Innovation in Flight
Author: Joseph R. Chambers
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 406
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 406
Book Description
Aeronautical Technologies for the Twenty-first Century
Author: National Research Council (U.S.). Committee on Aeronautical Technologies
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 21
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 21
Book Description
Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 287)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 706
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 706
Book Description