KEVIN DAHYA STRUCTURES – ERV

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Presentation transcript:

KEVIN DAHYA STRUCTURES – ERV

KEVIN DAHYA STRUCTURES - ERV Shape – Cylindrical with nose cone Better Pressure Vessel Easier to fit into faring Weight reduction Aerodynamics

KEVIN DAHYA STRUCTURES - ERV Red – Crew Quarters Grey – Outer Shell Gold – Rover Garage

KEVIN DAHYA STRUCTURES - ERV

KEVIN DAHYA STRUCTURES - ERV Sizing Breakdown Crew Quarters ~300m3 Propulsion/ In-Situ Plant ~200m3 Rover Garage ~110m3

KEVIN DAHYA STRUCTURES - ERV Hoop Stress (insignificant) Sigma (hoop) = 25 Mpa Sigma (yield) = 276 Mpa Weight Studies Solid Aluminum 0.0127m ~8 Tonnes Sigma (hoop) = 60MPa Current Configuration ~3.5 Tonnes Sigma (hoop) = 25Mpa

KEVIN DAHYA STRUCTURES - ERV Modal Analysis Natural Frequency (fnat) Fnat Axial = 166 Hz Fnat Lateral = 31 Hz Must be greater than 35Hz (Axial) and 15 Hz Lateral

KEVIN DAHYA STRUCTURES - ERV Future Work More Accurate Launch Loads Landing Loads Design of Landing Legs Weight Refinement

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