The idea is to develop low cost technologies to deliver cargo into space.
SpaceX has the lowest cost technology as of now. It uses reusable rockets.
The idea is to make a rail gun which shall send stuff into space and other vehicles in space shall catch it and move it where is it required.
The project name is “cargo cannon”. Because it seems like the cargo shall be shot from a cannon.
https://en.wikipedia.org/wiki/John_Hunter_(scientist)
https://en.wikipedia.org/wiki/V-3_cannon
https://en.wikipedia.org/wiki/Project_Babylon
Most successful launching at above 6 times escape velocity.
Missing steel bore cap
In 1956, Dr Robert Brownlee, from Los Alamos National Laboratory in New Mexico, was asked to examine whether nuclear detonations could be conducted underground. The first subterranean test was the nuclear device known as Pascal A, which was lowered down a 500 ft (150 m) borehole. However, the detonated yield turned out to be 50,000 times greater than anticipated creating a jet of fire that shot thousands of feet into the sky.[8] During the Pascal-B nuclear test, a 900-kilogram (2,000 lb) steel plate cap (a piece of armor plate) was welded over the borehole to contain the nuclear blast even though Brownlee predicted it would not work.[8] When Pascal-B was detonated, the blast went straight up the test shaft, launching the cap into the atmosphere at a speed of more than 66 km/s (41 mi/s; 240,000 km/h; 150,000 mph). The plate was never found.[9] Scientists believe compression heating caused the cap to vaporize as it sped through the atmosphere.[8] A high-speed camera, which took a frame per millisecond, was focused on the borehole because studying the velocity of the plate was sufficiently interesting. After the detonation, the plate appeared in only one frame, but this was enough to make an estimation of its speed. Dr. Brownlee joked the best estimate of the cover's speed from the photographic evidence was it was “going like a bat out of hell!”[9][10] Brownlee estimated that the explosion, combined with the specific design of the shaft, could accelerate the plate to approximately six times Earth's escape velocity.[9] In 2015 Dr. Brownlee said, “I have no idea what happened to the cap, but I always assumed that it was probably vaporized before it went into space.”[11]
https://en.wikipedia.org/wiki/Operation_Plumbbob
Mach 25 capable
https://en.wikipedia.org/wiki/DF-41
Mach 27 capable
https://en.wikipedia.org/wiki/Avangard_(hypersonic_glide_vehicle)