The U.S. Air Force selected Aerojet Rocketdyne, a subsidiary of Aerojet Rocketdyne Holdings, Inc., and United Launch Alliance (ULA) to share in a public-private partnership to develop jointly the AR1 ...

U.S. Air Force secretary Deborah Lee James has again voiced her concern about maintaining competition within the Evolved Expendable Launch Vehicle (EELV) program until a suitable substitute for the ...

WASHINGTON (Reuters) - The Pentagon will need to buy up to 18 more Russian-built RD-180 engines to power rockets carrying U.S. military satellites into space over the next six years or so, Deputy ...

It's been a decade-long effort to end the US military's reliance on the RD-180 engine.