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Mathematical crew motion disturbance models for spacecraft control system design. m.s. thesis - george washington univ.
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Conway, B. A. |
| Copyright Year | 1974 |
| Description | Several techniques for modeling the disturbances to a spacecraft's attitude caused by moving crew members are presented. These disturbances can be the largest moments acting on a manned spacecraft, and knowledge of their effect is important in the sizing, design, and analysis/simulation of spacecraft attitude control systems. The modeling techniques are identified as two principal types: deterministic and stochastic. Three techniques of each type are presented. The deterministic models include point-mass motion derivatives and a discussion on dynamic models of moving crew members. The stochastic techniques are highlighted by a Fourier transform method and the representation of long-term crew disturbance activities as outputs from appropriately designed filters. A z-transform technique is developed to obtain a difference-equation form of stochastic models for use on digital computers. An appendix derives spacecraft equations of motion which can be used with many of the models discussed. |
| File Size | 1554542 |
| Page Count | 63 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740027175 |
| Archival Resource Key | ark:/13960/t9n34ms8b |
| Language | English |
| Publisher Date | 1974-08-01 |
| Access Restriction | Open |
| Subject Keyword | Space Vehicles Spacecrews Fourier Transformation Attitude Stability Stochastic Processes Spacecraft Control Mathematical Models Spacecraft Stability Equations of Motion Manned Spacecraft Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Thesis |
