there’s more than enough info on his site to try and recreate some of his experiments, but perhaps you should start here instead: How to Design, Build and Test Small Liquid-Fuel Rocket Engines.

In fact, on July 24th, the HEXA rocket was officially certified as Open Hardware by the Open Source Hardware Association (OSHWA) — a first for a DIY rocket, as far as we can tell.

The bottle rocket challenge: faces from across the BBC compete to build and launch bottle rockets. Whose will fly highest? Could you do better? • As well as how-to films, all experiments are ...