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

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

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

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

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

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

Mass and Power Constraints 7Stephen Hu

Blade Radius vs. Power Required 8Stephen Hu

Forward Velocity vs. Power Required 9Stephen Hu

10 Characteristics/PerformanceExpectedContingency (20%) Mass (kg) Payload Mass (kg) Rotor Diameter (m) Main Blade Chord (m) 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) Spinup Time (s) Max Cruise Velocity (m/s) Optimal Cruise Velocity (m/s) Range (km)* Conclusions Stephen Hu

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

References 1."The Vertical Profile of Winds on Titan." 8 Dec 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, Stephen Hu