Spark
Initially the Spark project was developed to power my first ever rocket named "Lil Glimmer". The rocket goal was to attempt PTR (Polish Rocketry Association) L1 certification. This means that the impulse class of this motor had to fall in between H (160-320 Ns) and I (320-640 Ns) impulse class.
With time the interest in model rocketry in Poland grew ever so larger and so more and more people in the community wanted to get their L1 certifications. The stockpiles of the H/I class motors begun dwindling fast and with the most powerful commercially available motors in Poland being in F class the shortage of appropriate engines hit the community hard.
Spark S3
Spark S3
The Spark S3 is designed to be affordable and robust