Spaceflight Inc. and Benchmark Space Systems Sign Exclusive Deal for Green Propulsion On Next-Gen Sherpa Vehicles

Adding Benchmark’s non-toxic chemical propulsion systems to Spaceflight’s next-gen orbital transfer vehicles drives mission ROI, enables long-duration hosted payload missions, and provides rapid deorbit capabilities

Burlington, Vermont – August 5, 2020 – Benchmark Space Systems, a leading provider of green in-space propulsion systems for small satellites, today announced an exclusive services agreement with rideshare leader Spaceflight Inc. to provide a full range of non-toxic chemical propulsion solutions designed to accelerate satellite rideshare deployments to prime orbital locations aboard its next-generation Sherpa orbital transfer vehicles (OTVs).

Announced last month, Spaceflight’s first OTV in the Sherpa-NG family, Sherpa FX, will carry 16 customer spacecraft and several hosted payloads aboard a Falcon 9 no earlier than December 2020. Benchmark’s safe chemical propulsion will be equipped on an upgraded vehicle called Sherpa-LT as early as late next year. Benchmark’s propulsion features a patented On-Demand Pressurization System (ODPS) that securely fires up the thruster once the OTV is safely in space and deployed from the launch vehicle.

Artist’s rendering of a Benchmark Space Systems Halcyon Propulsion System onboard a CubeSat-class spacecraft

The exclusive propulsion agreement enables Spaceflight’s small satellite rideshare missions to take full advantage of low-cost rideshare launches to sub-optimal locations in space, where its Sherpa-LT vehicle propelled by a Benchmark green thruster can maneuver rideshare and dedicated spacecraft to ideal orbits in a matter of hours.

Spaceflight president and CEO, Curt Blake

Benchmark’s scalable, launch vehicle agnostic propulsion product and services set supports a broad spectrum of spacecraft, from 1U CubeSats through ESPA-class (1-500kg) satellites, large lunar landers, and orbital transfer vehicles (OTVs), offering far safer and faster rideshare options than electric propulsion systems, which can take months to complete their trips to orbit.

“By exclusively adding Benchmark’s reliable, green in-space propulsion systems to our portfolio of powered Sherpa vehicles, we can cost-effectively deliver our customers’ spacecraft to optimal orbits with greater precision, and then rapidly deorbit. That’s good for everyone – including the environment,” said Curt Blake, Spaceflight president and CEO.

Benchmark Space Systems CEO, Ryan McDevitt

“Benchmark Space Systems is thrilled to support Spaceflight’s Sherpa OTV program, bringing our patented non-toxic chemical propulsion solutions to this exciting next-gen deployer to enable a whole new level of rideshare capabilities and options for faster, safer missions to the best orbital locations around the world,” said Ryan McDevitt, Benchmark Space Systems CEO. “The Sherpa OTV and its rideshare customers can reach optimal orbits in no time with up to one-thousand times the thrust of electric propulsion, which is so slow the journey to orbit often cuts mission time and revenue in space. We are looking forward to our first milestone launch with Spaceflight’s Sherpa OTV next year.”

The integration of Benchmark’s non-toxic chemical propulsion solutions across the propulsion-equipped Sherpa OTV series will add speed and precision to Spaceflight’s market-leading rideshare services and capabilities. Spaceflight has launched more than 270 satellites across nearly 30 rideshare missions. In 2019, the company successfully executed nine missions, the most it’s ever launched in one year, sending more than 50 payloads to space.

“The Spaceflight-Benchmark collaborative agreement delivers on big demand for innovative green rideshare options that leverage low-cost launches to sub-optimal space with propulsion-equipped transporters offering quick, precise payload deliveries to premier orbit locations,” said Chris Carella, Executive Vice President of Business Development and Strategy, Benchmark Space Systems. “Both companies are agile developers and share a passion for always creating better solution designs that are launch vehicle agnostic and keenly focused on enabling new space accessibility with rapid, reliable in-space transport.”

For media inquiries, contact:

Paul Sims

For Benchmark Space Systems


Spaceflight PR contacts:

Christie Melby or Maddie Nance

Communique PR


About Benchmark Space Systems

Founded in 2017, Benchmark Space Systems is a leading developer and provider of exclusively non-toxic chemical propulsion systems for the small satellite market. The company is focused on providing the most cost-effective propulsions solutions, from rideshare orbit delivery to simple orbit adjustments and high-agility maneuvers. Patented and proprietary innovations have been specifically designed to improve safety and capability for spacecraft ranging from 3U through ESPA class. With 20 employees uniquely experienced and qualified in the development and support of green propulsion systems, Benchmark Space Systems is dedicated to serving the emerging rideshare and OTV markets. For more information, visit

About Spaceflight Inc.

Spaceflight is revolutionizing the business of space transportation through its comprehensive and innovative suite of rideshare launch and mission management services. The company offers state-of-the-art satellite integration capabilities, including flight and ground support hardware, licensing and logistics management, and mission expertise to support each customer’s specific mission needs. Spaceflight’s diverse portfolio of launch partners across the globe enables the company to offer routine launch options and unprecedented launch flexibility. Based in Seattle, Spaceflight has successfully launched hundreds of satellites and is a part of the Mitsui & Co., Ltd. portfolio, operating as an independent, U.S.-based company. For more information, visit

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