I understand.
In this particular design I can’t have a fixed bulkhead, so I employ a multi-layered Nomex blanket on the forward end of the CR secured to the tether that attaches to the forward closure of the motor. Probably the wrong example to provide.
In my other hybrid boosters I use exactly the same technique as you have used with the fitted bulkhead at the head of the booster and a CR just below the bulkhead coupler near the top of the motor.
In this particular design I can’t have a fixed bulkhead, so I employ a multi-layered Nomex blanket on the forward end of the CR secured to the tether that attaches to the forward closure of the motor. Probably the wrong example to provide.
In my other hybrid boosters I use exactly the same technique as you have used with the fitted bulkhead at the head of the booster and a CR just below the bulkhead coupler near the top of the motor.