Helicopter Recovery System
Design spinning blades to slow descent—like an autogyro! This approach keeps your payload aloft for longer and stabilises data recording.
How to Build
- Cut three plastic or card blades (about 15 × 3 cm).
- Tape them evenly around a small tube or straw.
- Mount the payload at the centre to balance weight.
- Test by dropping from height, adjust blade angle for slower fall.
Challenge
Use the accelerometer to measure rotation rate and descent time.