Preliminary Detailed Design
Team Vision for Preliminary Detailed Design Phase
Our team planned to have a better idea on the details of the design we have chosen. We planned to test motors and create a first draft of a blade design based off the values determined from motor testing. Motor testing will allow us to better calculate the dimensions of the blade design. The RPM values at different voltages are used to determine a torque value and ideal water speed value. This calculation will also help with purchasing the correct magnets that will be used as a plan A to waterproof the system.
We tested the motors at different voltages and created a plot of the corresponding RPM to voltage. The RPM was measured using a tachometer, and the voltage was the controlled input. These RPM values along with the electrical power are used to calculate the torque and theta values to help design the blades. A first version of the detailed design has been modeled. A first version anchor system has been discussed.
Feasibility: Prototyping, Analysis, SimulationAssumptions: Product will operate in 0.7-6.8 mph water speeds, largest radius will be 3 inches, will need to produce 7V of power for the motor to output 5V. To be able to design our product the governing equations below are available In the testing section you will see how the RPM at the needed power was measured from chosen motors. Then, the angular velocity needed for the turbine is calculated.
This will be the starting point in picking the correct motor and an efficient blade design. The calculations also verify if the requirement of 5V output if possible in these various water conditions.
Test Set Up
- Acquire all materials and make the disk as indicated in Figure 2.
- Make electrical connections.
- Measure the RPM at varied voltages starting at 5V and increasing by 1V until 15V. 15V being the last measurement.
- Plot data collected. RPM vs. Voltage.
Drawings, Schematics, Flow Charts, Simulations
Hydro Charge Simulation Results
Hydro Charge Motor Testing Results
Pacific DC Motor Model
Input and Source
Output and Destination
Bill of Material (BOM)
Complied List of Expected Purchases:
- Coupling driven magnets
- Hub for the turbine
- Iterations of turbine blades
- Cord for electrical components
- Product to water proof electronics
- Offshore housing
- Anchor system
- Updated assessment from Subsystems Design. Have you driven the likelihood and/or severity down as you worked through the details of your design?
- Include a snapshot of your current risk assessment as well as a link to the live document.