Life Support Systems Recap

What are hybrid LSS?

• a mix of biological and physico-chemical subsystems

• LSS that has two different sources of power

• chemical LSS that combine two or more materials during the process

• they do not exist

Which one is true?

• the carbon cycle can be closed in the biological LSS but not in the physico-chemical LSS

• the carbon cycle can be closed in the physico-chemical LSS but not in the biological LSS

Imagine you are an ESA flight surgeon. 3 days into the mission the crew memebrs complain about frequent headaches. Make an educated guess as to possible causes:

• the astronauts are lazy and are trying to get out of work

• the radiation exposure is causing immediate brain tumors

• the CO2 concentration in the cabin atmosphere is too high

• the crew has not fully adapted to micro-gravity yet

Which of these PC LSS technologies produce oxygen?

• Water Electrolysis

• Sabatier Reactor

• LiOH canister

• Vapor Compression Distillation

Which of these PC LSS technologies remove/reduce CO2?

• Water Electrolysis

• Sabatier Reactor

• LiOH canister

• Vapor Compression Distillation