Author: Arthur C. Grantz
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 152
Book Description
The low speed lateral/directional characteristics of a generic 74 degree delta wing body configuration employing the latest generation, gothic planform vortex flaps was determined. Longitudinal effects are also presented. The data are compared with theoretical estimates from VORSTAB, an extension of the Quasi vortex lattice Method of Lan which empirically accounts for vortex breakdown effects in the calculation of longitudinal and lateral/directional aerodynamic characteristics. It is indicated that leading edge deflections of 30 and 40 degrees reduce the magnitude of the wing effective dihedral relative to the baseline for a specified angle of attack or lift coefficient. For angles of attack greater than 15 degrees, these flap deflections reduce the configuration directional stability despite improved vertical tail effectiveness. It is shown that asymmetric leading edge deflections are inferior to conventional ailerons in generating rolling moments. VORSTAB calculations provide coarse lateral/directional estimates at low to moderate angles of attack. The theory does not account for vortex flow induced, vertical tail effects.
The Lateral-directional Characteristics of a 74-degree Delta Wing Employing Gothic Planform Vortex Flaps
Author: Arthur C. Grantz
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 152
Book Description
The low speed lateral/directional characteristics of a generic 74 degree delta wing body configuration employing the latest generation, gothic planform vortex flaps was determined. Longitudinal effects are also presented. The data are compared with theoretical estimates from VORSTAB, an extension of the Quasi vortex lattice Method of Lan which empirically accounts for vortex breakdown effects in the calculation of longitudinal and lateral/directional aerodynamic characteristics. It is indicated that leading edge deflections of 30 and 40 degrees reduce the magnitude of the wing effective dihedral relative to the baseline for a specified angle of attack or lift coefficient. For angles of attack greater than 15 degrees, these flap deflections reduce the configuration directional stability despite improved vertical tail effectiveness. It is shown that asymmetric leading edge deflections are inferior to conventional ailerons in generating rolling moments. VORSTAB calculations provide coarse lateral/directional estimates at low to moderate angles of attack. The theory does not account for vortex flow induced, vertical tail effects.
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 152
Book Description
The low speed lateral/directional characteristics of a generic 74 degree delta wing body configuration employing the latest generation, gothic planform vortex flaps was determined. Longitudinal effects are also presented. The data are compared with theoretical estimates from VORSTAB, an extension of the Quasi vortex lattice Method of Lan which empirically accounts for vortex breakdown effects in the calculation of longitudinal and lateral/directional aerodynamic characteristics. It is indicated that leading edge deflections of 30 and 40 degrees reduce the magnitude of the wing effective dihedral relative to the baseline for a specified angle of attack or lift coefficient. For angles of attack greater than 15 degrees, these flap deflections reduce the configuration directional stability despite improved vertical tail effectiveness. It is shown that asymmetric leading edge deflections are inferior to conventional ailerons in generating rolling moments. VORSTAB calculations provide coarse lateral/directional estimates at low to moderate angles of attack. The theory does not account for vortex flow induced, vertical tail effects.
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1346
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1346
Book Description
Scientific and Technical Information Output of the Langley Research Center for Calendar Year 1984
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 416
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 416
Book Description
Monthly Catalogue, United States Public Documents
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1196
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1196
Book Description
Vortex Flow Aerodynamics
Author: James Franklin Campbell
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 412
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 412
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
The Aeronautical Journal
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 504
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 504
Book Description
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 974
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 974
Book Description
Government Reports Annual Index: Keyword A-L
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 976
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 976
Book Description
Vortex Flow Aerodynamics, Volume 1
Author: James F. Campbell
Publisher:
ISBN:
Category :
Languages : en
Pages : 412
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 412
Book Description