IRIS system and future application to expandable launchers
Bussolino, Luigi ; Varesio, Franco ; Rum, Giovanni ; ...Portelli, Claudio
Jan - 1989

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type: Conference Proceedings

Abstract
The Italian Research Interim Stage (IRIS) is described. It consists of a Shuttle upper stage system designed to inject light payloads up to 900 kg mass from the Shuttle circular parking orbit into a geostationary transfer orbit. A summary of the information included in the IRIS users manual provides users with the necessary performance data, environment and interfaces for their payloads. A review of the status of the project is presented. The first flight unit will be launched in Aug. 1991.

keywords : EXPENDABLE STAGES (SPACECRAFT),GEOSYNCHRONOUS ORBITS,IRIS SATELLITES,ITALIAN SPACE PROGRAM,LAUNCH VEHICLES,MISSION PLANNING,PARKING ORBITS,PAYLOAD CONTROL,SPACE SHUTTLE PAYLOADS,SPACE TRANSPORTATION SYSTEM,TRANSFER ORBITS