2019年6月19日 星期三

GAO Anticipates First SLS Launch Date In 2021

GAO: Human Space Exploration: Persistent Delays and Cost Growth Reinforce Concerns over Management of Programs

"In November 2018, within one year of announcing an up to 19-month delay for the three programs - the Space Launch System (SLS) vehicle, the Orion spacecraft, and supporting ground systems - NASA senior leaders acknowledged the revised date of June 2020 is unlikely. Any issues uncovered during planned integration and testing may push the launch date as late as June 2021. Moreover, while NASA acknowledges about $1 billion in cost growth for the SLS program, it is understated. This is because NASA shifted some planned SLS scope to future missions but did not reduce the program's cost baseline accordingly. When GAO reduced the baseline to account for the reduced scope, the cost growth is about $1.8 billion. In addition, NASA's updated cost estimate for the Orion program reflects 5.6 percent cost growth. The estimate is not complete, however, as it assumes a launch date that is 7 months earlier than Orion's baseline launch date. If the program does not meet the earlier launch date, costs will increase further."



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