New answers tagged solid-fuel
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Increasing Propellant Mean Bulk Temperature (PMBT) increases the burn rate which increases the thrust and causes the motor to burn out sooner. The opposite is true for decreasing PMBT.
This graph from Sutton, 4th edition, shows the effect for large changes in PMBT.
I don't have numbers for Isp but I doubt it affects it much, because both thrust and mass ...
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