1. Group 2 Sunny Wicks, Rebecca Sampson, Nikki Akraboff, Ellis Langford, Garret Crandall

2. Objective of Presentation To present our finalized design and receive constructive input To make clear our motives for altering our preliminary design To back up our design with aerodynamic analysis

3. Final Design One main truss 2 balloons One back stabilizer Hanging motor arrangement

4. Final Design Snapshots

8. Aerodynamic Analysis Weight Balsa Truss.0387 kg Motor Assembly.2864 kg Its counterweight.05031 kg Servo Set.0806 kg Battery Pack.156 kg Balloons.14 kg Servo Battery Assembly.0883 +.0399 =.1282 kg Stabilizer~.02 kg Total Mass*9.8m/s^28.822 N

9. Aerodynamic Analysis

11. Hooray! The Lift needed is less than the Lift Max!

12. Design Evolution and Analysis Total design overhaul… Total design overhaul… Our design changed mainly because we directed our focus from creatively thoughtful to practical Our design changed mainly because we directed our focus from creatively thoughtful to practical We realized that although many other arrangements of balloons and propellers might theoretically work exceedingly well, if we couldn’t build it, it wouldn’t work We realized that although many other arrangements of balloons and propellers might theoretically work exceedingly well, if we couldn’t build it, it wouldn’t work

13. Conclusion :-D :-D