Balloon rocket engines by osymo

Last crawled date: 4 years, 10 months ago

These rocket engines are of two parts: a nozzle and a valve. The engines are adjustable to achieve the best possible flight. There are two engines available:
Engine 1 - Lightweight motor with three grooves for placing fins from cardstock. PDF with fins is in files.
Merlin Engine - Functional model of the SpaceX engine.