Air Force seeks rethink of 2019 deadline for new U.S. rocket engine
Wednesday, February 25, 2015 - 14:00
in Astronomy & Space
WASHINGTON (Reuters) - The U.S. Air Force on Wednesday said it will release plans within months for replacing the Russian-built RD-180 motors that now power some rockets used to launch military satellites into space, but said it would likely miss a 2019 congressional deadline to start using a new U.S. engine.