Interorbital Systems

Interorbital Systems (IOS) is an American private aerospace company founded in 1996 by Roderick and Randa Milliron in Mojave, California. Operating from the Mojave Air and Space Port — where IOS was among the earliest tenants — the company develops the world lowest-cost orbital launch vehicles and manufactures affordable satellite kits for researchers, educators, and commercial customers worldwide. IOS has competed in landmark prize competitions including the Ansari X Prize and served as launch provider for Team Synergy Moon in the Google Lunar X Prize.

IOS is developing two orbital launch vehicles: the NEPTUNE_100, a small-lift two-stage rocket capable of delivering 100 kg to a 500-km polar orbit at just 99,999 per dedicated launch (,918/kg), and the TRITON_4500, a medium-lift vehicle capable of orbiting up to 4,500 kg for 2 million per dedicated launch (,667/kg). Both vehicles use White Fuming Nitric Acid (WFNA) and turpentine propellants with ablatively-cooled filament-wound composite engines operable for up to 40 minutes, and can launch from land or ocean platforms.

IOS also produces the CubeSat 3.0 and TubeSat 3.0 personal satellite kits — the lowest-cost professional-quality small satellite kits on the market. These no-solder, no-drill kits can be assembled in under 15 minutes and are deployed to a 310-km polar orbit aboard IOS NEPTUNE rockets. With over 180 pre-paid launch customers, IOS offers configurations from 1U to 3U for both form factors. Additional offerings include the LunarStation commercial lunar lander (up to 20 kg payload, M per mission) and the Orbital Expeditions manned capsule program for 12-hour low-Earth-orbit tourism at 0 million per seat.