One of his more interesting builds is his series on building rocket engines out of PVC pipe written in conjunction with [Chuck Knight]. For the propellent grains, the PVC rocket didn’t use the ...

For the first N-1 launch, the rocket was powered by 30 of these closed ... Because of the closed-cycle design, the engine created very high combustion that was hot enough to melt the engine ...

After abruptly calling off its first launch attempt in the early hours of Monday morning, Blue Origin notched a historic ...