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| Content Provider | IEEE Xplore Digital Library | 
|---|---|
| Author | Grunwald, A.J. Ellis, S.R. | 
| Copyright Year | 1989 | 
| Description | Author affiliation: Israel Institute of Technology, Aero-Space Human Factors Research Division (Grunwald, A.J.) | 
| Abstract | An interactive graphical proximity operations planning system has been developed for dealing with the future dynamic multi-spacecraft environment about the space station. The system allows on site design of efficient complex multi-burn maneuvers in, as well as out of the orbital plane. Due to the complexity of the future traffic situation about the space station and the fact that the solution space is virtually unlimited, fully automated optimal solution schemes might not be feasible yet. Hence the design of such maneuvers will largely rely on the experience and judgment of the astronaut. The difficulty in planning such missions results from [1] the unusual and counter intuitive character of relative orbital motion trajectories, [2] the "impulse-type" open loop manner in which orbital maneuvering forces are applied and which is basically different from the continuous compensatory control in atmospheric flight, and [3] complex operational constraints which are both time varying and highly dependent on the mission scenario. This difficulty is greatly overcome by visualizing the relative trajectories and the relevant constraints in an easily interpretable graphical format, which provides the astronaut with immediate feedback on his design actions. Through a graphical interactive process, the astronaut will continue to modify the trajectory design until all operational constraints are satisfied. The effectiveness of this display format in complex trajectory design, is presently being evaluated in an ongoing experimental program. | 
| Starting Page | 144 | 
| Ending Page | 151 | 
| File Size | 811171 | 
| Page Count | 8 | 
| File Format | |
| DOI | 10.1109/ICCON.1989.770495 | 
| Language | English | 
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Publisher Date | 1989-04-03 | 
| Access Restriction | Subscribed | 
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Subject Keyword | Space vehicles Space technology Human factors Aerodynamics Trajectory Force control Motion control Space stations Counting circuits Aerospace engineering | 
| Content Type | Text | 
| Resource Type | Article | 
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