EPS & Thermal

Which of these systems require electrical power and thermal control?

• Payloads

• Communication system

• Attitude & Orbit Control System

• EVA System

Which primary energy sources have been used in space so far?

• Solar Arrays

• Stirling Reactors

• Energy wheels

• Fuel Cells

Which power systems would be useful for a long term mission in LEO?

• Fuel cells

• Photovoltaic systems

• Nuclear reactor

• Batteries

Which power system would you use for missions with a very high power demand?

• Fuel cells

• Photovoltaic systems

• Nuclear reactor

• Batteries

In which orbit is the solar power influenced by the seasons?

• GEO

• LEO

What is considered as comfort temperature range at a relative humidity range of 28-65%?

• 17.5-22°C

• 18.5-24°C

• 20-25.6°C

• 19-22°C

Which of the following is not considered a source for external heat loads?

• Free molecular heating

• Earth albedo

• Solar radiation

• Electrical power

What are advantages of a passive thermal control system?

• No power, fluid flow & control equipment needed

• Accurate temperature control possible

• Unlimited heat transfer and sink/source capacity available

• Good feedback/telemetry possible

What are advantages of an active thermal control system?

• High transport and transfer capability

• Low energy compsution

• Accurate temperature control

• Risk of leakage or damage

Which of the components on the ISS are used for thermal control?

• Body-mounted heat pipe radiators

• Internal water/ethylene glycol loops

• Single-phase water loops

• Radiator panels