JuggernautTeam 3 Completed Design Review

Becca Arvanites: Structural Design Mark Egan: Structural Analysis & StabilityKarl Kulling: RC Operator/communications & PropulsionChris Savage: Stability & Structural DesignDawn Wheeler: Propulsion & RC Communications

Why a Four-Balloon Diamond Design?

Benefits:Advantageous payloadStability in all directionsVectored Thrust

Control Systems

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

Aerodynamic Analysis

Maximum Thrust (from table):1.4N total from 2 large motors

Mass: 1.2-1.4kgMaximum Acceleration = Thrust/Mass = .9-1m/s2

Terminal Velocity = 1-1.2 m/sTime Estimate: 90-130 seconds

Design Evolution

Reshaping control assembly to allow roomfor propellers to turn

Motors mounted under control assembly instead of on topExtra bracing required on control assemblyPsychological evolution: new improved team name!

<-- motor mount prototype

Conclusions

Designed for stability and payload rather than aerodynamics/speedBuilding left: attach motor mount to fuselage, balloon attachment netTesting: controls response, practice using rc controller