Four Engines Competing To Send Military Satellites Into Space

Credit: Energomash
Lawmakers and generals agree it is time to stop launching U.S. national security spacecraft with Russia’s RD-180 rocket engine, but after that U.S. military space-launch policy is a free-for-all. With the Evolved Expendable Launch Vehicle (EELV) program on its last legs, four companies are at work...
Guy Norris

Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.

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