- An igniter is the device used to ignite a rocket engine.
- Pyrogen is the main chemical involved in the ignition
- Its a loop of fine gauge nichrome wire coated in pyrogen.
- When a small current is applied the wire heats up and the pyrogen ignites the motor.
Pyrogen
- It is an non-toxic solid that remains stable until electrically or thermally activated.
- It is used for rockets because after it ignites the rocket, it produces a gas-like extinguishing aerosol preventing explosions or fires.
- The aerosol attacks the fire chemically giving virtually instant extinguishment & prevents re-ignition.
- It is used by firemen to extinguish fires.