CSG test shows fix needed

STENNIS SPACE CENTER, Miss. -- Testing of a vital component for the A-3 test stand did exactly what it was intended to do: it showed a problem in the chemical steam generator (CSG). In testing at the E-2 facility, the two-inch angle-globe valves supplied with the unit were unable to stand up to operating conditions. Pieces of the seat material were "liberated" from the seat and valve stem, possibly allowing propellants to leak into the combustion chambers after minimal operational cycles, according to NASA. The procurement office is issuing a request for proposal from small businesses for 27 liquid oxygen (LOX) valves, 27 isopropyl alcohol (IPA) valves and related items. The new A-3 test stand will use nine three-module CSG units to generate superheated steam needed to create a vacuum that allows operators to test next-generation rocket engines at simulated high altitudes up to 100,000 feet. (Source: Tcp, 03/21/12) NASA solicitation; Previous related post