1. Stephen Hu Deployment Vehicle Selection Helicopter Design Hours Worked: 98 1 Team Member Stephen Hu

2. Helicopter Design 2 Introduction General Characteristics Constraints Deployment Conclusions Recommendations 2Stephen Hu

3. Introduction 1.Investigation of the surface and lakes of Titan 2.VTOL capability 3.Dependable performance in hostile environments 4.Able to last four months under constant operation

4. Constraints Environment –Temperature –Wind –Solar Energy –Atmospheric Density Volume/Storage –Diameter of Heat Shield –Airship Storage Stephen Hu4

5. General Characteristics Vehicle: Helicopter Type: Coaxial Number of Blades per rotor: 2 blades Airfoil: NACA 0012 5Stephen Hu

6. Deployment Post-Airship Separation Generator startup Freefall rotor startup Heat Shield separation 6Stephen Hu

7. Mass and Power Constraints 7Stephen Hu

8. Blade Radius vs. Power Required 8Stephen Hu

9. Forward Velocity vs. Power Required 9Stephen Hu

10. 10 Characteristics/PerformanceExpectedContingency (20%) Mass (kg)155.4186.5 Payload Mass (kg)15.0018.00 Rotor Diameter (m)1.364 1.426 Main Blade Chord (m)0.091 0.095 Fuselage Length (m)2.56 Fuselage Height (m)0.77 Total Height (m)1 1 Total Width (m)0.8 Max Climb Rate (m/s)2.292 1.349 Spinup Time (s)7.961 9.096 Max Cruise Velocity (m/s)7.46 6.95 Optimal Cruise Velocity (m/s)3.1 3.6 Range (km)*188.0 175.1 Conclusions Stephen Hu

11. Recommendations More in-depth aerodynamic design Materials Payload Deployment 11Stephen Hu

12. References 1."The Vertical Profile of Winds on Titan." www.nature.com. 8 Dec. 2005. Nature: International Weekly Journal of Science.. 2.Wright, Henry S. Design of a Long Endurance Titan VTOL Vehicle. Georgia Institute of Technology.. 3.Leishman, Gordon. Principles of Helicopter Aerodynamics. Cambridge UP, 2006. 12Stephen Hu