Testing Results
Volume and Pressure Optimization
Through extensive testing of various water volumes and pressure combinations, we've identified the optimal configuration for maximum thrust. Our testing methodology involved:
- Testing water volumes ranging from 400ml to 1100ml
- Pressure variations from 3 to 5 bar
- Multiple launch attempts for each configuration
- Precise measurement of launch height and stability
The results, detailed in the report below, demonstrate that our optimal configuration achieves the perfect balance between water volume and pressure, resulting in maximum thrust while maintaining stability during launch.
Acceleration Data
| Water Volume (ml) | Air Pressure (bar) | Average Velocity |
|---|---|---|
| 710 | 4 | 86.1 |
| 710 | 6 | 126.5 |
Thrust Testing Results
| Water Volume (ml) | Air Pressure (bar) | Max Thrust (N) | Thrust Duration (s) |
|---|---|---|---|
| 710 | 4 | 310 | 0.25 |
| 830 | 4 | 191.11 | 0.15 |
| 910 | 4 | 360.4 | 0.25 |
| 910 | 4 | 249 | 0.2 |
| 910 | 5 | 248 | 0.2 |
| 975 | 4 | 242.3 | 0.15 |
| 1109 | 4 | 208.18 | 0.2 |
Cost Analysis
Material Costs
- PET Cost: £8.43 (0.561kg at £15/kg)
- Printing Electricity: Negligible
Time Investment
- Printing Time: 7 hours
- Development Time: 3 months