Definitely not. I looked at it fairly closely before flight, and it definitely wasn't ready to fall apart.

More brainstorming: Have you calculated the differential pressure that your nosecone shear pins would have to withstand? Was the nosecone shoulder seated firmly against the airframe, to prevent your shear pins from taking G loads during the boost? Did the failure happen at burnout? If so, differential drag might have pulled the two pieces apart.

Chris,
Heard about your flight, sorry about the rocket.

Mike thanks for posting pics for those of us that didn't make it out.

-Chris

More brainstorming: Have you calculated the differential pressure that your nosecone shear pins would have to withstand? Was the nosecone shoulder seated firmly against the airframe, to prevent your shear pins from taking G loads during the boost? Did the failure happen at burnout? If so, differential drag might have pulled the two pieces apart.

The failure was pre-burnout, and the nose was seated fully against the airframe. I haven't run any CFD yet to determine the pressure on the nosecone though - I definitely plan to do that at some point.