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Final Presentation Back-up Slides Orbital Transfer Vehicle (OTV) Power and Thermal Control. Ian Meginnis. OTV Power Subsystems. Solar Array. <200V. Solar Array. Acronym Definitions: PCDU - Power Conditioning and Distribution Unit PPU - Power Processing Unit LL - Lunar Lander
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Final Presentation Back-up SlidesOrbital Transfer Vehicle (OTV) Power and Thermal Control Ian Meginnis Ian Meginnis Power Systems
OTV Power Subsystems Solar Array <200V Solar Array Acronym Definitions: PCDU - Power Conditioning and Distribution Unit PPU - Power Processing Unit LL - Lunar Lander DC - Direct Current Note: Not to scale Ian Meginnis Power Systems Battery (LL) Individual OTV Components DC-DC Converters PCDU 100V 100V PPU (Electric Propulsion)
100g Payload Case Power Budget 10kg Payload Case Power Budget Large Payload Case Power Budget Ian Meginnis Power Systems
Power Distribution: 100g Payload OTV Power Distribution: 10kg Payload OTV Power Distribution: Large Payload OTV Ian Meginnis Power Systems
OTV Power Dimensions Ian Meginnis Power Systems
OTV Thermal Control (all payloads) Electronics Board Thermal Control Hall Thruster Thermal Control Acronym Definitions: PCDU - Power Conditioning and Distribution Unit PPU - Power Processing Unit Batt - Battery DC - Direct Current Note: Not to scale Ian Meginnis Power Systems Radiating Heat Shroud Radiating Heat Shroud (Exhaust) 2 Radiators Hall Thruster DC/DC Converter PPU PCDU Batt Aluminum Heat Pipes with Ammonia Aluminum Mount
OTV Electronics Thermal Control Ian Meginnis Power Systems
Single, Simplified Orbit of OTV (Large Payload) Moon • At least 1 of the OTV’s set of radiators will not be exposed to sun’s rays at any point during the trajectory • Each radiator, alone, can provide thermal control for OTV electronics Sun Earth Note: Not to scale Ian Meginnis Power Systems