Stephen HuDeployment

Vehicle SelectionHelicopter DesignHours Worked: 98

1

Team Member

Stephen Hu

Helicopter Design

2

IntroductionGeneral CharacteristicsConstraintsDeploymentConclusionsRecommendations

2Stephen Hu

Introduction

1. Investigation of the surface and lakes of Titan

2. VTOL capability3. Dependable performance in hostile

environments4. 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 Hu 4

General Characteristics

Vehicle: Helicopter

Type: Coaxial

Number of Blades per rotor: 2 blades

Airfoil: NACA 0012

5Stephen 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/Performance Expected Contingency (20%)

Mass (kg) 155.4 186.5

Payload Mass (kg) 15.00 18.00

Rotor Diameter (m) 1.364 1.426

Main Blade Chord (m) 0.091 0.095

Fuselage Length (m) 2.56 2.56

Fuselage Height (m) 0.77 0.77

Total Height (m) 1 1

Total Width (m) 0.8 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

Recommendations

• More in-depth aerodynamic design

• Materials

• Payload

• Deployment

11Stephen Hu

References

1. "The Vertical Profile of Winds on Titan." www.nature.com. 8 Dec. 2005. Nature: International Weekly Journal of Science. <http://www.nature.com/nature/journal/v438/n7069/full/nature04060.html>.

2. Wright, Henry S. Design of a Long Endurance Titan VTOL Vehicle. Georgia Institute of Technology. <https://wiki.umn.edu/pub/titanedd/deployment/vtol_design_paper.pdf>.

3. Leishman, Gordon. Principles of Helicopter Aerodynamics. Cambridge UP, 2006.

12Stephen Hu