For Release: June 20, 1995

Steve Roy
Office of Media Services
(205) 544-0034
steve.roy@msfc.nasa.gov

NOTE TO EDITORS: 95-41N

ENGINE TEST SCHEDULED AT MARSHALL CENTER WEDNESDAY

NASA engineers are scheduled to test fire an instrumented modified Space Shuttle Main Engine for 170 seconds, tomorrow, no earlier than 2:00 p.m. in the Advanced Engine Test Facility at the Marshall Space Flight Center in Huntsville, Ala.

The test focuses on further evaluation of a start sequence and design changes of the alternate high pressure fuel turbopump for the Space Shuttle Main Engine development program.

New technologies to be demonstrated include testing of cryogenic pressure sensors and an improved laser liquid-level sensing system for measuring liquid hydrogen levels in the fuel tank and evaluation of a new automated engine monitoring system.

The engine will be operated at between 90 and 109 percent power levels during the run. The test will be the fifty-eighth test firing of a modified Space Shuttle engine in the former Saturn V engine test facility.