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1. Nozzle shall expand exhaust to ambient pressure (since ambient pressure changes throughout flight, will choose pressure at altitude 0.75? of the way to target altitude → need to justify why)

   
   

   
   

2. Withstand 2x maximum operating pressure

   
   

3. Attach securely to motor case

   
   

4. Withstand temperature of fuel burn

   
   

5. Prevent gas leak between graphite, phenolic, and carrier interface

   
   

6. Support the fin can under high acceleration