우주환경을 반영한 달탐사로버 열해석2

Thermal Analysis Cases

Objectives & Results:

• Moon-Ranger : explore the south pole for lunar ice (50K~200K)
• The validation of the viability of the thermal control of micro-rovers at the lunar poles for future missions

- Passive : Surface finish, VDA (Vapor Deposit Aluminum) tape, interface…

- Active : heaters, on/off logic

- -10℃ to 35℃ for surface operations, -15℃ to 40℃ for transit for avionics

참고문헌 : THERMAL MODELING AND DESIGN OF A MICRO-ROVER FOR LUNAR POLAR EXPLORATION, i-SAIRAS2020-Papers (2020)

Cislunar Transit

Surface Operations Model

참고문헌 : THERMAL MODELING AND DESIGN OF A MICRO-ROVER FOR LUNAR POLAR EXPLORATION, i-SAIRAS2020-Papers (2020)

Hot case : 270° azimuth and 15° elevation

Cold case : Roving in Complete Darkness

참고문헌 : THERMAL MODELING AND DESIGN OF A MICRO-ROVER FOR LUNAR POLAR EXPLORATION, i-SAIRAS2020-Papers (2020)

MLI Analysis

Power Analysis

Transit 동안 필요한 Rover heater 용량

• MLI ε* = 0.01
• Power input 8W ~ 14W

참고문헌 : THERMAL MODELING AND DESIGN OF A MICRO-ROVER FOR LUNAR POLAR EXPLORATION, i-SAIRAS2020-Papers (2020)

Objectives & Results:

• Thermal control of a light-weight rover system in the permanently shadowed regions of the lunar south pole between -20 ℃ to +50 ℃

• The Lunar surface thermal model is correlated with Apollo 17 data

참고문헌 : Thermal control of a light-weight rover system in the permanently shadowed regions of the lunar south pole, ICES-2020-209

참고문헌 : Thermal control of a light-weight rover system in the permanently shadowed regions of the lunar south pole, ICES-2020-209

Thermal Simulation Roles

Simulation Based Digital Twin