Launch vehicle systems and propulsion

C6 develops a dedicated smallsat launch system by integrating commercial components with its own avionics, telemetry, ground controls and vehicle systems. Its published two-stage design uses three Hadley engines on the first stage and one on the second, with ISISPACE-compatible deployer interfaces. The rocket page targets 100 kg to a 600 km Sun-synchronous orbit; other C6 pages retain smaller payload figures, so this is a source-specific design target rather than demonstrated vehicle performance.

The demonstrated evidence is ground integration. C6 reported an April 2021 campaign covering ignition, throttling, gimbaling, shutdown and cold-flow tests. New Mexico Spaceport Authority independently records a liquid-engine firing and retained test-stand infrastructure. These records improve the evidence for actual systems work, but do not establish orbital qualification, accepted payload delivery or current commercial launch availability. Engine and deployer heritage on other companies’ vehicles cannot substitute for C6 vehicle qualification.