What's the best design for a water rocket?
There's two parts I'm wondering about:
- fin design
- recovery system design
I'm planning to use angled fins. What angle is best?
Does the shape of the fins matter, or can I just make triangles out of cardboard?
For the recovery system, which is better: airspeed flap or "nose separates at apogee"? The second one is definitely easier to build, though.