Thermal: Deliverables and information needed from other groups

 PPT - Thermal: Deliverables and information needed from other groups

 Josh Sloane, Scott Wingate

 1/29/13

Radiator
SA: 15m^2

mass: 200 kg

Multi-Layer Insulation
SA: 37 m^2

mass: 23 kg

Power Group
Total power dissipated

Is there any interest in using fuel cells for power? The excess water can be used for Water-Ice sublimators instead of radiators. This will probably not be feasible, but it may be worth considering as a trade study

Propulsion Group
Non-insulated SA

The Thermal subgroup will collaborate with the Propulsion subgroup to determine if cryogenic propellants are feasible

Crew Systems
Insulated surface area of capsule(s)

Confirm that the Crew Systems group is in charge of making sure the temperature inside the capsule is uniform (via. airflow)

Mission Planning
Mission architecture (orbits, lunar landing site)

Is there any temperature-sensitive scientific instrumentation?

Avionics
Avonics temperature requirements

Confirm that the Avionics group will be in charge of cooling their equipment, and then Thermal will just need to consider how much heat is genierated.

Method(s) of cooling avionics. Air-cooled (therefore adding heat to the crew cabin air), liquid cooled (where the liquid can pump heat more directly to the radiators), or some other method?

Structures
Structures temperature requirements

Confirm that the Structures group is responsible for considering the effects of thermal cycling on the materials.

Who is in charge of the heat shield

Systems Integration
Mass/volume budget

Are the recommendations for the responsibilities of the other groups appropriate? I want to make sure that these tasks aren’t forgotten, or done by several groups seperately

Are the deliverables for the Thermal subgroup (listed below) appropriate? Is there anything else that should be on that list?

Deliverables
Thermal controls to keep cabin around 295 K

insulation type and location

radiator size and location

Maintain structural temperature requirements

Cool avionics

Maybe thermal simulations

Maintain reasonable temperature in any spacecraft kept in orbit for long durations

E.g. cryogenic propellent in orbit for long durations would need significant cooling/thermal considerations

Ideas
Radiators

Water-Ice sublimators

Geothermal

http://www.slideshare.net/IngesAerospace/spacecraft-thermal-control-6-radiators