GROUP I ROLLER COASTER

Team Members:

Sam Knepley

Laura Alman

Bob Carroll

Sarah Jacobsen

Nick Morris

Outline

Brainstorming Ideas Initial Paper Design Revisions of Design Result Design Problems and Solutions Conclusion

Brainstorming

Each Group Member Presented Ideas Downward Slope Vertical Loop Figure Eight Double Downward Horizontal Loop

Initial Paper Design

Featuresdesignplacement

Structural SupportDifficult drawingDifficult deciding design of support

Initial Paper Design Velocity Calculations

Feature Velocity (in) m/s Velocity (out) m/s Banking Angle Critical Velocity (m/s)

Start to First Feature 0 2.65 Vertical Loop Start to Top 2.65 1.699 ≥ 0.997838Vertical Loop Top to Bottom 1.699 2.03 Vertical Loop to Figure 8 2.03 2.01

Figure 8 Start to End 2.01 1.623 72.8779 Figure 8 to Double Downward Loop 1.623 1.6 Double Downward Start to End 1.6 1.458 55.759 Double Downward to Bump 1 1.458 1.35 Beginning of Bump 1 to Top 1.35 0.71 ≤ .997838Top of Bump 1 to Bottom 0.71 1.27 Curve From Bump 1 to Bump 2 1.27 1.02 28.368 Beginning of Bump 2 to Top 1.02 0.25 ≤ 0.86415Top of Bump 2 to Bottom 0.25 0.78 Bump 2 to End 0.78 0.569

First Build

First Build First Build

Time Adjustments to Initial DesignFinding Parts

InventorKeep Track of PartsDiagram For future builds

Second Build

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Second Build

Build on First SessionVertical Loop and Figure 8

AccomplishedDouble Downward Loop and Bump

More EfficientFitting PartsMaking adjustments

Final Build

Final Build

RevisionsExcess Parts

○ Switch Elbows for TeesEnergy

○ Too little for bumpSnap Fits

○ Add Stability

Final Design

Final

Results

Final Design CalculationsFeature V in (m/s) V out (m/s) Banking Angle Critical V (m/s) Actual V (m/s)

Start to First Feature 0 2.597 2.41346

Vertical Loop Start to Top 2.597 1.649 >.9899 1.47232

Vertical Loop Top to Bottom 1.649 1.9818 1.15321

Figure 8 Start to End 1.9818 1.775 68.236 2.05357

Figure 8 to Double Downward Loop 1.775 1.719 0.65029

Double Downward Start to End 1.719 2.046 66.677 1.01124

Double Downward to Bump 1 2.046 1.88675

Beginning of Bump 1 to Top 1.88675 1.4308 <.6261 0.66224

Top of Bump 1 to Bottom 1.4308 1.4075

Bump 1 to Horizontal Curve 1.4075 1.384

Horizontal Curve to end 1.384 0.872 50.696 0.450195

Total

Problems & Solutions

DesignVelocityFigure 8

BuildTrackDimensions

Conclusion

Design Process - Trial/Error Teamwork Designed an Interesting

Working Coaster

Questions?