Malfunctioning Engine Statistical Survey
M.E.S.S.

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Manufacturer
Estes Industries
Designation
E12-0
Type
single-use
Date code
2 1 2 25 28 2 00
Failure date
Feb 21, 2026
Location
Gunter, Tx
Temperature
55 ℉
Nozzle blown out
Burning propellant ejected
Reported to mfr.
Have more motors
Comments
The Boosted Bertha was carrying my 1KHz flight computer recording; acceleration, thrust, and approximate chamber pressure. The motor burned 275ms before failure. It also exhibited a very short ignition delay of <50ms. A normal E12 has an ignition delay of 120-180ms. I'm including a graph of the CATO data and a comparison to a normal E12 ignition to peak thrust.
Photos
E12 Thrust & Pressure.jpg
Status
pending