Materials change proves winner for NASA
Problem: Deep space-based research by NASA called for a high energy solar concentrator that could focus from 3.5” to a faceted point over a 12” length. Designers had initially tried sapphire as the material best suited to this application. However, it failed under Beta tests so NASA turned to a fused silica material but needed precise machining to ensure accuracy.
Solution: NASA turned to China Hard Materials Parts. Since 1947 we have extensive experience in diamond grinding and polishing sapphire as well as chemo-mechanically finishing intricate parts from fused silica and quartz. China Hard Materials Parts’s expertise in fabricating to extreme tight tolerances (without bias to a particular material) made the choice simple.
Result: NASA selected a special grade of fused silica and contracted with China Hard Materials Parts for the precision machining. Specifications for the complex polish and edge radii, as well as the production feasibility for this intricate and critical part, were successfully accomplished by China Hard Materials Parts and completed on time and on budget, saving NASA valuable time to get the solar concentrator up in space quickly.
