The discussion focuses on launching a rocket from a high-altitude weather balloon, specifically at altitudes around 70 km. The primary concern is the igniter's ability to ignite the engine due to low oxygen levels. The proposed solution involves using the rocket fuel compound as part of the igniter, ensuring that sufficient energy from a spark or heat from a wire coil can initiate combustion. The integration of a high-resistance wire coil embedded in the solid fuel near the exhaust nozzle is recommended for effective ignition.
PREREQUISITESAerospace engineers, hobbyist rocket builders, and anyone involved in high-altitude rocket launches will benefit from this discussion.
How would I integrate this into the igniter?JBA said:If this is a solid fuel rocket then use the rocket fuel compound as a part of the igniter and there should not be a problem because the sufficient energy from a spark or heat from a wire coil is all that should be required.
So basically embed the igniter coil directly into the engine of solid based fuel closest to the exhaust nozzle?JBA said:For example, use a small high resistance wire coil embedded into a small molded slug of the fuel compound or the bottom of the solid fuel at the exhaust nozzle.