Author: Jerrold H. Suddath
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 20
Book Description
Summary: A theoretical study was made of the angular motions of spinning bodies in space. The analysis was based on Euler's dynamic equations which were linearized and solved analytically. The results of the study are directly applicable only to spin-stabilized vehicles with constant moments of inertia and angular displacements not exceeding about 15°. Simple analytical expressions were obtained which relate angular motions to spin-rate and inertia distributions for a given disturbance. Consideration was given to the effects produced by having artificial damping in the system. The study included numerical examples and comparisons of analytical solutions with machine solutions of exact dynamic equations. The analysis indicated that angular motions are sensitive to inertia distributions. In considering a rectangular-pulse pitching moment, it was found that the residual motion was very sensitive to the time at which the moment was removed. Artificial damping due to a perfect proportional control system seemed to be more advantageous to pencil-like configurations than to disk-like configurations.
A Theoretical Study of the Angular Motions of Spinning Bodies in Space
Author: Jerrold H. Suddath
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 20
Book Description
Summary: A theoretical study was made of the angular motions of spinning bodies in space. The analysis was based on Euler's dynamic equations which were linearized and solved analytically. The results of the study are directly applicable only to spin-stabilized vehicles with constant moments of inertia and angular displacements not exceeding about 15°. Simple analytical expressions were obtained which relate angular motions to spin-rate and inertia distributions for a given disturbance. Consideration was given to the effects produced by having artificial damping in the system. The study included numerical examples and comparisons of analytical solutions with machine solutions of exact dynamic equations. The analysis indicated that angular motions are sensitive to inertia distributions. In considering a rectangular-pulse pitching moment, it was found that the residual motion was very sensitive to the time at which the moment was removed. Artificial damping due to a perfect proportional control system seemed to be more advantageous to pencil-like configurations than to disk-like configurations.
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 20
Book Description
Summary: A theoretical study was made of the angular motions of spinning bodies in space. The analysis was based on Euler's dynamic equations which were linearized and solved analytically. The results of the study are directly applicable only to spin-stabilized vehicles with constant moments of inertia and angular displacements not exceeding about 15°. Simple analytical expressions were obtained which relate angular motions to spin-rate and inertia distributions for a given disturbance. Consideration was given to the effects produced by having artificial damping in the system. The study included numerical examples and comparisons of analytical solutions with machine solutions of exact dynamic equations. The analysis indicated that angular motions are sensitive to inertia distributions. In considering a rectangular-pulse pitching moment, it was found that the residual motion was very sensitive to the time at which the moment was removed. Artificial damping due to a perfect proportional control system seemed to be more advantageous to pencil-like configurations than to disk-like configurations.
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1274
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1274
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 446
Book Description
Government-wide Index to Federal Research & Development Reports
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1352
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1352
Book Description
The Development of Zonal Centrifuges and Ancillary Systems for Tissue Fractionation and Analysis
Author: Norman Gulack Anderson
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 558
Book Description
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 558
Book Description
National Cancer Institute Monograph
Author:
Publisher:
ISBN:
Category : Cancer
Languages : en
Pages : 554
Book Description
Publisher:
ISBN:
Category : Cancer
Languages : en
Pages : 554
Book Description
Technical Report - Jet Propulsion Laboratory, California Institute of Technology
Author: Jet Propulsion Laboratory (U.S.)
Publisher:
ISBN:
Category : Jet propulsion
Languages : en
Pages : 76
Book Description
Publisher:
ISBN:
Category : Jet propulsion
Languages : en
Pages : 76
Book Description
NASA Technical Report
Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 734
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 734
Book Description
Monthly Catalog of United States Government Publications, Cumulative Index
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1284
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1284
Book Description
Analytical Study of Soft Landings on Gas-filled Bags
Author: Jack B. Esgar
Publisher:
ISBN:
Category : Gas
Languages : en
Pages : 732
Book Description
Publisher:
ISBN:
Category : Gas
Languages : en
Pages : 732
Book Description