CORAX System Integration

1
CORAX System Integration

• Group 10
• Members
• Jenny Chu
• Steve Han
• Eric Seto
• Kevin Wu
• Advisor
• Kelley Ristau

2
Week 45 Agenda

• Meet with Dr. Guest to discuss test methods.
• Implement any new test methods.

3
Gantt Chart Week 5
GREEN completed BLUE pending
4
Obstacles

• Propeller flew off every time we tried load
  testing.
• Could not perform additional testing due to
  campus closure and said propeller flying off.

5
Background Info Graupner Speed 600

• 8.4v nominal, 9.6v max, 4.8v min
• No load speed 15500-17000 RPM
• Load speed 9500-11800 RPM
• Current drain at max efficiency 9.5-11A
• No load current 1.8A

6
Motor Tests I vs. V curve (no load)
7
Quantitative Determination of RPMs

• Shine flashlight on rotating propeller
• Use photodiode circuit to generate AC voltage
• Measure AC frequency to determine RPM

8
Work In Progress

• Determining characteristics of battery charger.
• Run motor tests with different propellers for
  different load curves.

9
Summary

• Consulted with Dr. Guest about test methods
• Began initial I-V characterization of motor
• Propeller flew off