U.S. Army Pursues Nanosats and Microlaunchers on a Shoestring
"...The Multipurpose NanoMissile System is designed to be a low-cost launcher using a bi-propellant ethane and nitrous oxide core stage supplemented by multiple strap-on surplus/end-of-life MLRS and ATACMS artillery rockets...."
Reference: satellite.tmcnet.com .
