We are fascinated by the hybrid rocket engine which [Ben Krasnow] built and ... That is not the case with this design. The acrylic is actually burning, but if the flow of oxygen is cut off it ...

In the ’60s, rocket engine design and manufacturing company Rocketdyne had tried to make the J-2T Aerospike, a toroidal aerospike concept intended as an improvement over the Rocketdyne J-2 ...

But there's something that can be done to make space missions even cheaper ... That's because, says Stoke, the design of the engines and the rocket they're meant to power allows for easy access.

The rocket in question was driven by a powerful Russian engine unlike any ever built in the States. Although this particular engine was new, the design dated back to the space age. By the early ...