This section will document my attempt to resurrect the Aerotech RMS Hybrid and launch it at Balls possibly in 2023. More to come.
GRAPHITE NOZZLE
AKA: Shipping Delays Cause Minor Design Change The single-use design of Aerotech nozzles may be cost-effective to include in a kit, but when ordering from RCS, the availability of a particular nozzle needed for the motor case may not be available due to shortages or other delays related to their business. Going with the original…
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FUEL GRAIN PART II
After gaining experience with the 54mm ABS grain shell, I decided to do the 98mm. Using a printed shell allows you to select the right amount of infill based on your fuel viscosity. You will need to account for the high shrinkage of paraffin, approximately 17%, so once it cools a little bit, top off…
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FUEL GRAIN
After a lengthy search, an easily obtainable and inexpensive fuel grain material that requires minimal processing has been found. Since using sorbitol in the previous series of experiments, I wanted to find a material that was cheap and easy to use; paper mache and high-melting-point paraffin fit the bill; large quantities can be had for…
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FLIGHT TANKS
The 98mm hybrid flight tank is readily available in the original configuration if you know what to look for. They do not need to be new, as there are plenty of sources available. I searched around by size based on the original drawing. As you can see, it is 3.2″ in diameter, as it is…
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Patrick Carroll 