Integrated System and Build P19463 Agenda Update on Engineering - - PowerPoint PPT Presentation

Integrated System and Build

P19463

Agenda

• Update on Engineering requirements
• Subsystems

○ Housing ○ Blades ○ Magnet spacing ○ Motor

• System overall
• Risk and Problem Assessment
• Next 4 week plan

Update on Engineering Requirements

Customer Requirement Engineering Requirement Update Engineering Requirements Function Mapping to Functional Decomposition One USB output 5 V output Unchanged Electrical Deliver Electricity Self sustaining after set-up 10ft Cord 20ft Cord Mechanical Anchor System Operates in different depths of water Minimum of 6 inches Minimum of 10 inches Generate Electricity Portable Minimum Volume Unchanged N/A 5lb Unchanged N/A

Subsystem: Housing

• Motor has same outer diameter
• Can use the same components
• Still need to test waterproofing
• Add cement
• Add gasket
• No need to remachine!

Subsystem: Blades

Subsystem: Coupling Magnets Data

# Magnets 12 10 8 6 Distance (in) Torque (Nm) 0.039 10.462 6.823 2.426 1.603 0.057 9.097 4.928 2.123 1.403 0.065 7.733 4.549 1.819 1.336 0.076 7.733 4.170 1.819 1.102 0.087 6.823 3.791 1.213 1.002 0.093 5.913 3.412 1.213 1.002 0.123 4.549 3.032 1.213 1.002

Conclusion: A distance of 0.065in to 0.123 should be used with 12 magnets. To ensure functionality 0.06in would be ideal.

Subsystem: Motor Testing

Risk and Problem Assessment

• Blades do not spin the motor enough to get desired output

○ Change the size of the blade ○ Test another motor

• 5 pounds 15.7 ounces

○ Lighter motor

• Buoyancy

○ Adding floaties

• Problem: DC-DC converter not working effectively

○

Order a step up transformer to prevent the overshoot from the generator that harms the buck-boost

System Overall

• Motor
• Old motor has given an output of about 1.5 Volts maximum
• We are trying a new motor (easy swap)
• Weight is slightly over spec, we think it will be under with new motor
• Magnet spacing we have works (0.1 inches, 12 magnets)
• Will be testing multiples blades in the pool
• 3 good iterations to test

To Do List

• Waterproofing
• Testing in pool with current
• New motor output
• Order transformer, new buck boost
• Buoyancy
• Anchor system
• Rope/ retrieve system
• Attempt in real river (not the pool)
• Painting
• Final presentation, paper and poster

Next 4 weeks: individual week

4/2: order transformer, order buck boost (by the end of the day) Thursday: Waterproofing, test with new motor Sunday: pool, start paper 4/9: Buoyancy / anchor system / rope system 4/16: Attempt in river 4/23: Buffer week / painting / final presentation / paper