Based on the NASA-designed and tested H71M Hall Effect Thruster, the two companies will manufacture a family of propulsion systems spanning a range of input power and propellants. Dubbed the "Valkyrie System", Phase Four and Redwire will provide new solutions and more choice to a very under-supplied market. The Valkyrie system will have multiple desired features, including being re-programmable post launch; provide multiple set-points such that satellite operators can optimize based on their mission require ...