yee@trident.arc.nasa.gov (Peter E. Yee) (10/28/89)
RTQ -- COLUMBIA MAIN ENGINE NO. 2 GIMBALING INCIDENT UPDATE 2 p.m. 10/27/89 On Tuesday night, Oct. 24, Columbia's main engines were gimbaled to allow the installation of work platforms used for heat shield installation. Engine No. 2 was inadvertently gimbaled several degrees in yaw beyond the design specification. The norm is no greater than 10.5 degrees. Engineers are evaluating the condition of the ducts to ensure the ducts were not overstressed during the movement. At present, only three ducts are requiring closer analysis than the preliminary measurements performed earlier this week. These three ducts are the gaseous oxygen pressure duct, the low pressure fuel turbine discharge duct and fuel bleed line. An assessment of the schedule impact, if any, that would result from changing any of the ducts is under review. Source: Bob Sieck, KSC Launch Director Cleared by : Sarah Keegan, Code M Prepared by: Pat Phillips, KSC PA-PIB