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Spaceflight goes big on orbital transfer vehicles

Seattle-based Spaceflight Inc. today unveiled two new options for its Sherpa orbital transfer vehicle — one that uses an environmentally friendly chemical thruster system to help get small satellites where they need to go, and another that’s powered by an electric propulsion system.

Such options add propulsive capability to the standard Sherpa-FX model, which is due to make its first flight as a secondary payload for a SpaceX Falcon 9 rocket launch by as early as December.

For years, Spaceflight has served as a broker and concierge for other people’s payloads — basically bundling small satellites for launch on rockets ranging from the Falcon 9 to Rocket Lab’s Electron and India’s PSLV.

The company hit a significant milestone in 2018 when it arranged for the launch of 64 satellites on a single Falcon 9. During that mission, a pair of free-flying spacecraft served as deployment platforms.

That blazed a trail for the Sherpa program, and the effort got an extra boost this year after Spaceflight Inc.’s acquisition by Japan’s Mitsui & Co. “Really, the next step in building out this cislunar space transportation company that we care to become is the Sherpa program,” Grant Bonin, Spaceflight’s senior vice president of business development, told me. “Sherpa was an early vision of the company, but we really revived it this year.”

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By Alan Boyle

Mastermind of Cosmic Log, contributing editor at GeekWire, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.

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