Author: D. H. Platus
Publisher:
ISBN:
Category :
Languages : en
Pages : 41
Book Description
A control system is described that will limit cross-range dispersion of spinning reentry vehicles caused by lift variations. The controls consist of small trim flaps or reaction jets that utilize information derived from strapdown motion sensors to minimize lift nonaveraging. Because epicyclic oscillations in angle of attack do not cause dispersion, only the phasing of complex angle-of-attack motion must be controlled to minimize the net transverse velocity that would otherwise result from lift variations. This requires relatively little control energy compared with a system that would trim the vehicle at zero angle of attack. A simple control law is derived that specifies minimum feedbacks required, and the open- and closed-loop vehicle response to impulsive disturbance moments is demonstrated. (Author).
Lift-Dispersion Control of Spinning Reentry Vehicles
Author: D. H. Platus
Publisher:
ISBN:
Category :
Languages : en
Pages : 41
Book Description
A control system is described that will limit cross-range dispersion of spinning reentry vehicles caused by lift variations. The controls consist of small trim flaps or reaction jets that utilize information derived from strapdown motion sensors to minimize lift nonaveraging. Because epicyclic oscillations in angle of attack do not cause dispersion, only the phasing of complex angle-of-attack motion must be controlled to minimize the net transverse velocity that would otherwise result from lift variations. This requires relatively little control energy compared with a system that would trim the vehicle at zero angle of attack. A simple control law is derived that specifies minimum feedbacks required, and the open- and closed-loop vehicle response to impulsive disturbance moments is demonstrated. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 41
Book Description
A control system is described that will limit cross-range dispersion of spinning reentry vehicles caused by lift variations. The controls consist of small trim flaps or reaction jets that utilize information derived from strapdown motion sensors to minimize lift nonaveraging. Because epicyclic oscillations in angle of attack do not cause dispersion, only the phasing of complex angle-of-attack motion must be controlled to minimize the net transverse velocity that would otherwise result from lift variations. This requires relatively little control energy compared with a system that would trim the vehicle at zero angle of attack. A simple control law is derived that specifies minimum feedbacks required, and the open- and closed-loop vehicle response to impulsive disturbance moments is demonstrated. (Author).
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1126
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1126
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Technical Abstract Bulletin
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 908
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 908
Book Description
Applied Mechanics Reviews
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 916
Book Description
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 916
Book Description
A Collection of Technical Papers
Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 564
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 564
Book Description
WADC Technical Report
Author: United States. Wright Air Development Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1274
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1274
Book Description
Description of Vehicle System and Flight Tests of Nine Trailblazer I Reentry Physics Research Vehicles
Author: William N. Gardner
Publisher:
ISBN:
Category : Solid propellant rockets
Languages : en
Pages : 102
Book Description
Publisher:
ISBN:
Category : Solid propellant rockets
Languages : en
Pages : 102
Book Description
International Aerospace Abstracts
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 820
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 820
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1398
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1398
Book Description
Astronautics & Aeronautics
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 832
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 832
Book Description