Science and Public Policy: National Security 109 



Figure 7. — Canister suspension cords, aluminized polyester-glass 

 fibre sheet and lacing of heat insulation in TELSTAR satellite. 



vented almost immediately their normal operation). But basic 

 scientific correlations of radiation damage effects were already 

 established for the crystal junction particle counter and other 

 junction devices, by Brown, Gabbe and their co-workers. They 

 also identified from counting equipment already installed in 

 the first TELSTAR satellite the position and range and quality 

 of the dangerous radiation (Fig. 8). Immediate corrective meas- 

 ures, benefiting also from basic studies in military laboratories 

 concerned with radiation damage effects, were taken for this 

 and subsequent satellites. Thus, for example, the initial 15- 

 watt output of the Bell Solar Cell arrays which provided 

 satellite power was reduced only by 3i/^ watts during the first 

 year of relatively intense bombardment and, of course, very 

 much less proportionately in the succeeding years. In addition, 

 however, the whole scientific study is continuing (now pri- 



