juggernaut team 3 completed design review becca arvanites: structural design mark egan: structural...
Post on 15-Jan-2016
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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