ULTRA-LIGHT DEPLOYMENT MECHANISM (UDM) FOR SECTIONED LARGE DEPLOYABLE ANTENNA REFLECTORS

The Ultra-Light Deployment Mechanism (UDM) is a CFRP curved tape spring based mechanism suitable for the deployment of solid reflector antenna sections with a projected diameter of t he full reflector of 4m to 7m and specific mass lower than 2.0 kg/m2. High Tension Car bon Fibre / Cyan ate Ester Resin prepregs are used to form curved tape springs which provide the necessary deployment motorization and reflector pointing stiffness while demonstrating excellent temperature stability. This paper presents the design and test results of the UDM as well as its other possible areas of application.