 ... 1. Bearings with crown-type retainers, standard except that all the components were gold-plated, were also run to provide a comparison of retainer configurations. The bearings were run in pairs and, in all, fifty bearings were tested. A summary of...  NASA Technical Note - 5. lappuse1962Pilnskats - Par šo grāmatu
 | 1963 - 558 lapas
...No failure Low voltage test Low voltage test No failure No failure No failure No failure No failure Vacuum System Because the bearings were to operate...special pumping system, employing ion-getter type high-vacuum pumping and a cryogenic roughingpump, was designed and built. Since the test program called... | |
 | Goddard Space Flight Center - 912 lapas
...and, in all, fifty bearings were tested. A summary of the various combinations is given in Table 1. Vacuum System Because the bearings were to operate...special pumping system, employing ion-getter type high-vacuum pumping and a cryogenic roughing pump, was designed and built. Since the test program called... | |
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