- Additional Authors
- Description
- 1 microfiche (9 unnumbered pages) : negative, illustrations; 11 x 15 cm.
- Summary
- "Solar radiation pressure on the vibrating antenna structure, temperature gradients induced by solar heating, and stabilizing gravity-gradient torques were considered when the linear regulator theory was used to obtain orientation and shape control of a hoop column antenna system being considered for the land mobile satellite system. A finite element model of the antenna system which includes all six rigid modes and seven flexible modes was used. Results show that the environmental disturbances affect only the rigid modes of the structure. The effect of solar radiation pressure interacting with the vibrating system is smaller than the solar radiation pressure acting on the thermally deformed structure. To reduce control effort in order to maintain shape and orientation, thermal deformations must be minimized in the preliminary design of the system."--NTIS abstract.
- Series Statement
- NASA-CR ; 175448
- Uniform Title
- NASA contractor report ; NASA CR-17548.
- Subject
- Note
- "Offered for presentation at the 35th International Astronautical Congress, Lausanne, Switzerland, October 7-13, 1984."
- Bibliography (note)
- Includes bibliographical references (page [6]).
- Funding (note)
- Sponsored by the National Aeronautics and Space Administration
- Call Number
- GPO Microfiche NAS 1.26:175448
- OCLC
- marcive180878336
- Author
Krishna, R., author.
- Title
Environmental effects on the dynamics and control of an orbiting large flexible antenna system / by R. Krishna and Peter M. Bainum.
- Publisher
[Washington, D.C.] : [Howard University, Department of Mechanical Engineering] : National Aeronautics and Space Administration, [1984]
- Type of Content
text
- Type of Medium
microform
- Type of Carrier
microfiche
- Series
NASA-CR ; 175448
NASA contractor report ; NASA CR-17548.
- Bibliography
Includes bibliographical references (page [6]).
- Funding
Sponsored by the National Aeronautics and Space Administration NSG-1414.
- Indexed Term
Aerospace environments; Controllability; Dynamic structural analysis; Flexible spacecraft; Large space structures; Satellite antennas; Attitude control; Gravitation; Land mobile satellite service; Radiation pressure; Shape control; Solar heating; Solar radiation
- Added Author
Bainum, Peter M., author.
Howard University. Department of Mechanical Engineering, issuing body.
United States. National Aeronautics and Space Administration, sponsoring body.
- Other Form:
Online version: Krishna, R. Environmental effects on the dynamics and control of an orbiting large flexible antenna system (OCoLC)876185488
- Gpo Item No.
0830-H-14 (MF)
- Sudoc No.
NAS 1.26:175448