If you want improve a model rocket’s performance, all the common options come with serious trade-offs: you could increase the ...

A model rocket should be simple: point it upward, light the motor, and watch it climb. Project Air’s X-15 model rocket plane ...

The Earth is much larger than most people realize. You need to use engines if you want to efficiently navigate large sections of the planet. Everything from cars to planes relies on engines, but they ...

Rocket engines sometimes commit to one nozzle shape and live with it. Integza decided that was unnecessarily permanent. In a ...