From Propellant Ignition To Contact Of The Case Wall With The Chamber
- The case wall deflects rapidly in the radial direction, under a relatively low gas pressure,
until it contacts the chamber.
- This happens so quickly that the temperature increase of the case wall is negligible at the
time of contact.
- During this stage, the case material may be stressed into the plastic range, depending on the
magnitude of the radial clearance.
- The impact of the case wall on the chamber causes a dynamic response in the chamber and
case that damps out rapidly in time.
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