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Fri, Apr 30, 2004

NASA Turns To Noah In Sound Suppression Test

Will Release 350,000 Gallons Follows Valve Job

For the fourth time in Space Shuttle Program history, 350,000 gallons of water will be released on a Mobile Launcher Platform (MLP) at Launch Pad 39A during a water sound suppression test. The test will take place at 8 a.m. May 7.

This test is being conducted following the replacement of the six main system valves, which had been in place since the beginning of the Shuttle Program and had reached the end of their service life. Also, the hydraulic portion of the valve actuators has been redesigned and simplified to reduce maintenance costs.

The sound suppression water system is installed on the launch pads to protect the orbiter and its payloads from damage by acoustical energy reflected from the MLP during launch. The system includes an elevated water tank with a capacity of 300,000 gallons. The tank is 290 feet high and stands on the northeast side of the Pad. The water is released just before the ignition of the orbiter's three main engines and twin solid rocket boosters, and flows through parallel 7-foot-diameter pipes to the Pad area.

FMI: www.ksc.nasa.gov

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