An Automatic Charge Control System for Satellites
Abstract
SCATHA as well as the ATS-5 and -6 spacecraft have prov ided some answers and insights to the problem of spacecraft charging at geosynchronous altitudes. In particular they have indicated the approach to reducing the levels of both absolute and differential charging -- namely, by the emission of low energy neutral plasma. It is now appropriate to complete the transition from experimental results to the development of a system that will sense the state-of-charge of a spacecraft, and, when a predetermined threshold is reached, will respond automatically to reduce it. The Air Force is embarking on such a development program, utilizing sensors comparable to the proton electrostatic analyzer, the surface potential monitor, and the transient pulse monitor that flew in SCATHA, and combining these outputs through a microprocessor and controller to operate a rapid-start, low energy plasma source. A flight-ready system should be available for spacecraft integration by 1988.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 26, 1986
- Accession Number
- ADA201452
Entities
People
- B. M. Shuman
- H. A. Cohen
Organizations
- Air Force Research Laboratory