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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721176939
Category :
Languages : en
Pages : 34
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Book Description
The Attitude Control and Energy Storage Experiment is currently under development for the International Space Station; two counter-rotating flywheels will be levitated with magnetic bearings and placed in vacuum housings. The primary objective of the experiment is to store and discharge energy, in combination with existing batteries, into the electrical power system. The secondary objective is to use the flywheels to exert torque on the Station; a simple torque profile has been designed so that the Station's Control Moment Gyroscopes will be assisted in maintaining torque equilibrium attitude. Two energy storage contingencies could result in the inadvertent application of torque by the flywheels to the Station: an emergency shutdown of one flywheel rotor while the other remains spinning, and energy storage with only one rotor instead of the counterrotating pair. Analysis of these two contingencies shows that attitude control and the microgravity environment will not be adversely affected. Roithmayr, Carlos M. Langley Research Center NASA/TM-1999-209100, L-17795, NAS 1.15:209100
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721176939
Category :
Languages : en
Pages : 34
Get Book Here
Book Description
The Attitude Control and Energy Storage Experiment is currently under development for the International Space Station; two counter-rotating flywheels will be levitated with magnetic bearings and placed in vacuum housings. The primary objective of the experiment is to store and discharge energy, in combination with existing batteries, into the electrical power system. The secondary objective is to use the flywheels to exert torque on the Station; a simple torque profile has been designed so that the Station's Control Moment Gyroscopes will be assisted in maintaining torque equilibrium attitude. Two energy storage contingencies could result in the inadvertent application of torque by the flywheels to the Station: an emergency shutdown of one flywheel rotor while the other remains spinning, and energy storage with only one rotor instead of the counterrotating pair. Analysis of these two contingencies shows that attitude control and the microgravity environment will not be adversely affected. Roithmayr, Carlos M. Langley Research Center NASA/TM-1999-209100, L-17795, NAS 1.15:209100
Author: Carlos M. Roithmayr
Publisher:
ISBN:
Category : Torque
Languages : en
Pages : 24
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Author:
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ISBN:
Category : Astronautics
Languages : en
Pages : 182
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721288649
Category :
Languages : en
Pages : 24
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Book Description
An experimental flywheel energy storage system is described. This system is being used to develop a flywheel based replacement for the batteries on the International Space Station (ISS). Motor control algorithms which allow the flywheel to interface with a simplified model of the ISS power bus, and function similarly to the existing ISS battery system, are described. Results of controller experimental verification on a 300 W-hr flywheel are presented. Kascak, Peter E. and Kenny, Barbara H. and Dever, Timothy P. and Santiago, Walter and Jansen, Ralph H. Glenn Research Center NASA/TM-2001-211138, E-12993, IECEC2001-AT-10, NAS 1.15:211138
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721636761
Category :
Languages : en
Pages : 24
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Book Description
The energy storage and attitude control subsystems of the typical satellite are presently distinct and separate. Energy storage is conventionally provided by batteries, either NiCd or NiH, and active attitude control is accomplished with control moment gyros (CMGs) or reaction wheels. An overall system mass savings can be realized if these two subsystems are combined using multiple flywheels for simultaneous kinetic energy storage and momentum transfer. Several authors have studied the control of the flywheels to accomplish this and have published simulation results showing the feasibility and performance. This paper presents the first experimental results showing combined energy storage and momentum control about a single axis using two flywheels. Kenny, Barbara H. and Jansen, Ralph and Kascak, Peter and Dever, Timothy and Santiago, Walter Glenn Research Center NASA/TM-2004-212935, E-14373, IEEEAC-1261
Author: Daniel J. Scheeres
Publisher:
ISBN:
Category : Navigation (Astronautics)
Languages : en
Pages : 778
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Author: John Damian Shaughnessy
Publisher:
ISBN:
Category : Energy storage
Languages : en
Pages : 82
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Author: Ralph W. Will
Publisher:
ISBN:
Category : Flywheels
Languages : en
Pages : 36
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