Stephen Hu Deployment Vehicle Selection Helicopter Design Hours Worked: 102 1 Team Member Stephen Hu.

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Presentation transcript:

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

Constraints Environment – Cryogenic Conditions Icing occurs above 10 km (around T~91 K) – Wind: 0-10 m/s – Solar Energy: Minimal - None – Atmospheric Density: 5.44 kg/m 3 Volume/Storage – Diameter of Heat Shield: 3.75 m – Airship Storage Stephen Hu2

3 Type: Coaxial Airfoil: NACA 0012 Helicopter Characteristics

Deployment 4Stephen Hu

Blade Radius vs. Power Required 5Stephen Hu

Forward Velocity vs. Power Required 6Stephen Hu

Altitude Ceiling Stephen Hu7

8 Characteristics/PerformanceExpectedMaximum Expected Mass Total Mass (kg)* Payload Mass (kg) Rotor Radius (m) Main Blade Chord (m) Fuselage Length (m)2.56 Fuselage Height (m)0.77 Total Height (m)1.0 Total Width (m)0.8 Max Climb Rate (m/s) Spin-up Time (s) Max Cruise Velocity (m/s) Optimal Cruise Velocity (m/s) Range (km)*183.7/ /100 Altitude (km)*12.6/ Conclusions Stephen Hu

Characteristics /Performance Georgia Tech Helicopter NASA AirshipDesigned Combination (Max. Mass) Total Mass (kg)318.8 Max Cruise Velocity (m/s) / Optimal Cruise Velocity (m/s) / Max Climb Rate (m/s) 4 Range (km)* 100 Altitude (km)* 10

Recommendations More in-depth aerodynamic design Materials Payload Deployment 10Stephen 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, Prouty, Raymond W. Helicopter Aerodynamics. 2nd ed. Peioria, ILL: PJS Publications, Lorenz, R. D. "Flexibility for Titan Exploration: The Titan Helicopter." Innovative Approaches to Outer Planetary Exploration Lunar and Planetary Lab, University of Arizona, Tucson, Az.. 6.Young, Larry A. "Vertical Lift - Not Just for Terrestrial Flight." Army/NASA RotorCraft Division, Ames Research Center, Moffett Field, CA.. 7.Lorenz, Ralph D. "Post-Cassini Exploration of Titan: Science Rationale and Mission Concepts." University of Arizona Lunar and Planetary Laboratory. Lunar and Planetary Lab, University of Arizona, Tucson, Az.. 11Stephen Hu

Mass and Power Constraints 12Stephen Hu

Helicopter Design 13 Introduction General Characteristics Constraints Deployment Conclusions Recommendations 13Stephen 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 14Stephen Hu