Juggernaut

1
Juggernaut
Team 3 Completed Design Review
Becca Arvanites Structural Design Mark Egan
Structural Analysis Stability Karl Kulling RC
Operator/communications Propulsion Chris
Savage Stability Structural Design Dawn
Wheeler Propulsion RC Communications
2
Why a Four-Balloon Diamond Design?

• Benefits
• Advantageous payload
• Stability in all directions
• Vectored Thrust

3
Control Systems

• Vectored Thrust one servo controls pitch of
  motors, another servo controls yaw of motors
• RC control (human factors)

4
Aerodynamic Analysis

• Maximum Thrust (from table) 1.4N total from 2
  large motors
• Mass 1.2-1.4kg
• Maximum Acceleration Thrust/Mass .9-1m/s2
• Terminal Velocity 1-1.2 m/s
• Time Estimate 90-130 seconds

5
Design Evolution

• Reshaping control assembly to allow room for
  propellers to turn
• Motors mounted under control assembly instead of
  on top
• Extra bracing required on control assembly
• Psychological evolution new improved team name!

lt-- motor mount prototype
6
Conclusions

• Designed for stability and payload rather than
  aerodynamics/speed
• Building left attach motor mount to fuselage,
  balloon attachment net
• Testing controls response, practice using rc
  controller