Cosmos 1: the first solar sail The Planetary Society is developing and conducting a privately funded solar sail project with Cosmos Studios. The spacecraft will be developed, launched and operated in Russia.
Solar-Thruster-Sailor Solar Sail with hybrid propulsion, using light pressure and ion thruster to produce thrust. Spacecraft Building System to build large, light weight space structures in a fast and simple way.
Swiss Propulsion Laboratory Aims to develop systems to transport small civilian payloads into a low-earth orbit (LEO).
The Sunflower Project A proposed space transportation system which consists of two parts: rotocrane moving in an atmosphere only, and sunflower moving in a space plasma. Description of the theory and state of development.
