Satellite TVC

This 27 foot TVC has a working area of 25 ft wide X 30 ft long and 19 ft high because of a false floor. It is a 17 000 cu ft thermal vacuum chamber built by CB&I, Chicago Bridge & Iron.

The first two dozen Navistar global positioning system (GPS) satellites were built at this Seal Beach facility utilizing the chamber's high throughput testing capability. WTEC

Automatic Regeneration Of Multiple Cryopumps

"A method of automating the simultaneous regeneration of any of all of six 48 in. cryopumps is presented. (Cryopump regeneration is a process which involves multiple backfill/evacuation cycles.) Conventional Boolean logic gates are combined into control loops which are explained, along with the basic functioning of the computer, for this portion of the vacuum chamber operation. The proposed system optimizes use of the computer by using an endless loop search-and-scan procedure. The computer looks at the first cryopump, tests for the necessary operations, performs them, and then indexes to the next cryopump, eventually returning to the initial station. The cycle is repeated until all selected cryopumps are completely regenerated. Implementation of this package is planned for the winter of 1986 on the 17 000 cu ft thermal vacuum chamber at Rockwell International, Seal Beach, California."

USA thermal vacuum and brass board studies:

"The final thermal vacuum tests of August-October 1997 and June 1998 took place at the Boeing Seal Beach facilities. The ARGOS satellite, USA aboard, was put in the thermal vacuum chamber with all the experiments assembled on the satellite. The temperature cycle ranges measured in the detector body were from -15°C to 50°C for the NRL tests and from 0°C to 24°C for the Boeing tests."

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