2018年5月1日 星期二

NASA Continues To Have Big Problems With Cost And Schedule

NASA: Assessments of Major Projects, GAO

"The cost and schedule performance of the National Aeronautics and Space Administration's (NASA) portfolio of major projects has deteriorated, but the extent of cost performance deterioration is unknown. NASA expects cost growth for the Orion crew capsuleone of the largest projects in the portfoliobut does not have a current cost estimate. In addition, the average launch delay for the portfolio was 12 months, the highest delay GAO has reported in its 10 years of assessing major NASA projects.

The deterioration in portfolio performance was the result of 9 of the 17 projects in development experiencing cost or schedule growth. Four projects encountered technical issues that were compounded by risky program management decisions. For example, the Space Launch System and Exploration Ground Systems programs are large-scale, technically complex human spaceflight programs, and NASA managed them to aggressive schedules and with insufficient levels of cost and schedule reserves. This made it more difficult for the programs to operate within their committed baseline cost and schedule estimates."



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