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(If relevant) A clearly labeled diagram (or diagrams) clearly pertaining to your analysis with a coordinate system and relevant labels. Final answer with appropriate units and significant figures.  A 2-3 sentence reflection on your answer. Does it make sense? Why or why not? What are some implications? Do not just summarize your solution procedure.

(If relevant) A clearly labeled diagram (or diagrams) clearly pertaining to your analysis with a coordinate system and relevant labels. Final answer with appropriate units and significant figures.  A 2-3 sentence reflection on your answer. Does it make sense? Why or why not? What are some implications? Do not just summarize your solution procedure.

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  1. (If relevant) A clearly labeled diagram (or diagrams) clearly pertaining to your analysis with a coordinate system and relevant labels.
  2. Final answer with appropriate units and significant figures. 
  3. A 2-3 sentence reflection on your answer. Does it make sense? Why or why not? What are some implications? Do not just summarize your solution procedure.
Sputnik I was a Russian artificial satellite launched in 1957. The aluminum hull was a spherical shell of diameter 585 mm and wall thickness 2 mm. a) Although Sputnik carried no life forms (Spunik II would carry a dog, Laika), the hull was pressurized to 130 kPa (gauge) to prove the integrity of the hull. Calculate the in-plane stress and strain due to pressure alone. Solution: Reflection: b) The hull is depressurized and opened to ambient air at 20°C at seal level, and sealed prior to launch. During orbit, the temperature swings from -100°C to +150°C as the satellite passes in and out of Earth's shadow. Find the maximum and minimum in-plane stress and in-plane strain during orbit.
Transcribed Image Text:Sputnik I was a Russian artificial satellite launched in 1957. The aluminum hull was a spherical shell of diameter 585 mm and wall thickness 2 mm. a) Although Sputnik carried no life forms (Spunik II would carry a dog, Laika), the hull was pressurized to 130 kPa (gauge) to prove the integrity of the hull. Calculate the in-plane stress and strain due to pressure alone. Solution: Reflection: b) The hull is depressurized and opened to ambient air at 20°C at seal level, and sealed prior to launch. During orbit, the temperature swings from -100°C to +150°C as the satellite passes in and out of Earth's shadow. Find the maximum and minimum in-plane stress and in-plane strain during orbit.
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