United Launch Alliance’s corporate parents have guaranteed a loan to the company as it addresses “financial challenges” caused by the grounding of its Vulcan Centaur rocket.

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Northrop Grumman took another charge for the solid rocket boosters it provides for the Vulcan Centaur and suggested updated motors might not be ready until the end of the year.

The post Northrop adds to charges on Vulcan solid rocket motor program appeared first on SpaceNews.