NAVIGATION REQUIREMENTS OF A MINIMUM PROPELLANT GUIDANCE LAW FOR LOW-THRUST SPACECRAFTS.

Alain L. Kornhauser, Paul M. Lion

Research output: Contribution to conferencePaper

Abstract

The navigational requirements for minimum-propellant guidance of a low-thrust spacecraft are analyzed. The guidance algorithm that is studied is an implicit deterministic feedback guidance law that is developed from the theory of neighboring extremals. This guidance law has a number of interesting features resulting from its optimality; such as, not allowing throttling, and defining regions of the trajectory where no tradeoff exists between the navigation and guidance problem. The difficulty with the guidance law is that it is implicit and therefore the navigation system must be able to react to perturbations before the spacecraft strays from the linear neighborhood of the nominal trajectory. The size of this linear neighborhood is studied and the resulting implications on the navigation system are presented. Separation of the navigation problem from the guidance problem is assumed throughout. Data is presented for two test cases.

Original languageEnglish (US)
Pages159-165
Number of pages7
StatePublished - Jan 1 2017
EventInst of Navig, Natl Space Meet, Proc - Orlando, FL, USA
Duration: Mar 15 1972Mar 16 1972

Other

OtherInst of Navig, Natl Space Meet, Proc
CityOrlando, FL, USA
Period3/15/723/16/72

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Kornhauser, A. L., & Lion, P. M. (2017). NAVIGATION REQUIREMENTS OF A MINIMUM PROPELLANT GUIDANCE LAW FOR LOW-THRUST SPACECRAFTS.. 159-165. Paper presented at Inst of Navig, Natl Space Meet, Proc, Orlando, FL, USA, .