After 30 days of data reduction, Ares I-X engineers continue to find fairly close correlation between their computer models and the flight performance of the test vehicle, which was the tallest rocket ever launched. Flight-control algorithms developed for the operational vehicle "worked extremely well," said NASA's Marshall Smith, systems engineering and integration (SE&I) manager for Ares I-X, and the flight data in general validated the computer models being used to design Ares I. "I, personally, from SE&I, am very, very pleased with the performance of our (guidance, navigation and control) system; the algorithms that we're testing for Ares I worked...