Specifications:Operating Pressure: 400,000 Pa (4 bar)
Nozzle Diameter: 12 mm
Estimated Mass Flow Rate: ≈ 0.45–0.5 kg/s (calculated using Bernoulli flow equation)
Spray Range (approximate): 12–18 meters depending on wind and elevation
Arm Torque (from CFD simulation):
Peak torque: ~2.4 N·m
Operating torque around Y-axis: ~2.0–2.4 N·m
Spring Constant Used:
~21.14 N·m/rad (≈ 369 N·mm/deg)
Return Time of Arm: ~0.025–0.05 seconds
Arm Mass: 233 g
About the Design:This is a functional concept of an impact model where water flow drives a spring-loaded arm, incrementally rotating the body.
Designed in SolidWorks
Fluid flow validated using SolidWorks Flow Simulation
Realistic water-jet behavior modeled to calculate torque
Quarter-circle deflector & angled jet diverter ensure smooth motion
What’s Missing (and How You Can Help!):Due to limited time, the following elements are functional placeholders:
Cam and follower mechanism (for sweep control)
Ratchet gear + pawl system (for incremental barrel rotation)
If you have experience with cam/ratchet design, your input is highly appreciated!Feel free to remix, review, or improve the mechanisms — just tag me or share it back!
Thanks!If you’d like to bring this design into reality — I’d be glad to help guide you through the build process.