are: • small spacecraft design. Culham have been involved in this activity for some 4 years, and some of this work could be offered as a zero cost baseline for design in a Phase A/B study, if we were to be involved. • provision of low cost subsystems e.g. cold gas propulsion system and controller, a version of which is at the engineering model activity stage. • laser systems, with tracker/pointer correction capabilities, have been developed and tested for reception by a target over distances of the order of 100 metres. • spacecraft/plasma interaction diagnostics (if required) have been developed in support of ESA/ESTEC programmes in this area. • analysis of experimental data. [The Following was also supplied on November 19,1991] POSITION STATEMENT ON POWERSAT DEMONSTRATOR OPTIONS The Space Applications Department of AEA Technology based at Culham Laboratory, is supportive of a Powersat Technology, Demonstrator experiment, the options for which have been examined by RI Hannigan for Eurospace under ESA contract. This support is conditional upon the demonstration being sensible and credible, however. It is our opinion that the transmission of a few watts over distances of a few metres does not constitute a sufficiently realistic
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