NASA now expects the first launch of the Space Launch System to slip to 2019, regardless of any decision to put a crew on that mission, given ongoing issues with development of the launch vehicle and the Orion spacecraft.
Bill Gerstenmaier, NASA associate administration for human exploration and operations, acknowledged the delay in a letter included in a U.S. Government Accountability Office report released April 27 that concluded that Exploration Mission 1 (EM-1) would not meet its current November 2018 launch date.
“We agree with the GAO that maintaining a November 2018 launch readiness date is not in the best interest in the program, and we are in the process of establishing a new target in 2019,” Gerstenmaier wrote in the letter, dated April 12 and included as an appendix in the GAO report.
Gerstenmaier said, in response to one recommendation in the GAO report, that NASA would develop a new launch readiness date by the end of September. “NASA is assessing the EM-1 schedule in light of a number of ongoing activities,” he said, which include the tornado that damaged the Michoud Assembly Facility in New Orleans in February, disrupting work on the core stage of the SLS, and the ongoing development of the administration’s fiscal year 2018 budget request.
The GAO, in its examination of progress NASA was making on EM-1 requested by Congress in the report accompanying the fiscal year 2016 appropriations bill, had already concluded that the mission would not be ready for launch in late 2018 as planned. “With little to no schedule or cost reserves remaining as the programs finalize production and enter integration and testing activities, the EM-1 launch readiness date is in a precarious position,” the report stated.
The GAO noted in the report progress made in the development of SLS, Orion and ground systems, but added that all faced serious challenges with little margin. “The magnitude of the schedule delays that the programs have experienced amid this progress, however, foreshadows a likely schedule slip for the November 2018 EM-1 launch readiness date,” the report concluded.
One example is the delivery of the European-built service module for Orion, which is on the critical path for EM-1. Once scheduled for delivery in January, it has been delayed until at least August. Once delivered, the program requires 12 months of work to integrate it with the crew capsule and perform testing before delivering it to the Kennedy Space Center for final launch preparations.
“NASA officials stated that they would not be able to maintain a launch readiness date of November 2018 if Kennedy Space Center receives the Orion spacecraft after July 2018,” the report noted. “As a result, the November 2018 launch readiness date is likely unachievable unless NASA identifies further mitigation steps to accommodate delays.” The conclusion of the report added that the service module is now expected to be delivered in September, with the possibility of an additional two-month delay.
The report is the second in two weeks to conclude that delays in the SLS/Orion program were all but certain. An April 13 report by NASA’s Office of Inspector General concluded that both EM-1 and EM-2, the first launch to carry a crew, faced schedule slips. “NASA’s first exploration missions – EM-1 and EM-2 – face multiple technical challenges that will likely delay their launch,” that report stated.