Abstract
There is a growing market for launch of nano-or microsatellites for missions in low Earth orbit (LEO) and beyond. The most common systems presently being studied are based on cubesats which can operate in multisatellite constellations; each individual cubesat typically has a mass of a few kilograms. The study reported here has evaluated the launch of a two-stage-to-LEO projectile capable of carrying a cubesat. The initial launch velocity is provided by a railgun and the LEO orbit insertion with a rocket motor in a second stage. A ground-based electromagnetic (EM) acceleration system of this type could provide a useful reduction in the launch-to-orbit cost compared with present large chemical boosters. Advantages of the EM launch approach include increased launch frequency, safety and reliability as well as cost reductions.
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