ONLINE SPACECRAFT ENVIRONMENT INTERACTIONS INFORMATION-SYSTEM

EnviroNET is a computerized text type data base that provides rapid access to the latest information on a variety of space environments and spacecraft interactions of importance to understanding anomalies. Although originally intended as a design guide for Space Shuttle users, it has grown into a valuable resource of information on spacecraft charging and near-Earth charging environments. Included in the services is interactive modeling, some of which are also of interest for diagnosing anomalies. A more recent development is the on-line expert system for diagnosing anomalies. The expert system combines algorithms with expert heuristic knowledge, and uses confidence factors in variables and rules to calculate results with degrees of confidence associated with them.