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NASA chief acknowledges more trouble with SLS rocket

AFP  |  Washington 

NASA's said Wednesday its next heavy-lift rocket, the SLS, is running into additional development delays, and the space agency now wants to use private launchers for its next

has spent years developing the SLS, or Space Launch System, which would be the most powerful rocket ever built, with the goal of resuming manned space missions to the Moon. A capsule for astronauts, Orion, is being built by Lockheed-Martin and for the missions.

After a three year delay, a first unmanned mission around the Moon and back, dubbed EM-1, has been scheduled for June 2020.

But told a hearing that the "SLS is struggling to meet its schedule" and won't be ready in time for the

"Last week it came to our attention that we're not going to be able to maintain the schedule," he told the Commerce,

It is the first time that has clearly acknowledged the extent of the problems with the SLS, which according to an inspector general's report last August has so far cost the space agency more than USD 12 billion to develop.

Bridenstine then made the shocking announcement that he wants to entrust the in June 2020 to existing private launch systems, instead of waiting for SLS to be ready.

He did not say which private company he had in mind, but would be a natural candidate with its Falcon Heavy rocket. United Launch Alliance's IV Heavy also would be a capable alternative.

is a joint venture of and was founded by billionaire

"We have amazing capability that exists right now that we can use off the shelf in order to accomplish this objective," Bridenstine said.

The new plan would consist of first launching the capsule, and then follow it with the launch of an upper stage for propulsion. The two elements will then dock in orbit for the voyage around the Moon.

No rocket in existence today is capable of lifting both elements together, because of their weight, which is why needed the more powerful SLS.

"I want to be clear, we do not have right now an ability to dock the crew capsule with anything in orbit. So between now and June of 2020, we would have to make that a reality," Bridenstine said.

"NASA has a history of not meeting launch dates, and I'm trying to change that," he said.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Thu, March 14 2019. 00:30 IST