When was the Orion project studied?

In the late 1950s, American scientists made a research plan for Mars exploration, namely "Orion Project". The unmanned spacecraft "Olian" designed for this purpose is believed to be driven by the shock wave generated in the interval between nuclear explosions. Later, scientists improved the design of Olian, making it a manned starship, flying to Sirius or other stars. The huge spacecraft can carry hundreds of male and female astronauts and their descendants, and everything that sustains their lives and work. The nuclear pulse propulsion device of the spacecraft uses a small hydrogen bomb to explode to generate electricity. The explosive power of a hydrogen bomb is equivalent to 1000 tons of explosives, and it explodes every 3 seconds or 10 seconds. /kloc-within 0/0 days, the spacecraft can accelerate to a speed of 10000 km. Due to the speed effect, it took 280 years to reach Sirius.