Also known as: オライオン計画, オリオン原子力ロケット計画
Project Orion was a study conducted in the 1950s and 1960s by the USAF, DARPA, and NASA into the viability of a Spacecraft propelled by a series of Nuclear Explosions behind itself. Usually associated with the name and depicted in artwork is the USAF 10 meter design with a cylindrical profile.
For the spacecraft used in NASA's Artemis Program, see Orion (Spacecraft).