Next Delta 4 rocket grounded by RL10 engine inquiry

Next Delta 4 rocket grounded by RL10 engine inquiry BY STEPHEN CLARK SPACEFLIGHT NOW Posted: October 18, 2013 6 United Launch Alliance has postponed the next launch of a Delta 4 rocket from Oct. 23 to sort out the significance of fresh conclusions stemming from an investigation into an RL10 engine anomaly during another Delta 4 launch one year ago, the company said in a statement Friday. The launch company, which operates the Atlas and Delta rocket fleets, said it has not set a new date for the Delta 4 rocket's launch of the GPS 2F-5 spacecraft to replenish the U.S. Air Force's fleet of positioning, navigation and timing satellites. More

(Source: SpaceFlight Now - Oct 20)