What is the rmr consensus wrt hpr igniter failure modes:
1) bad bridge-wire connection
2) bad clip connection
3) insufficient delivered power (controller problem)
4) insufficient pyrogen quantity (too short burn)
5) poor pyrogen quality (not hot enough)
Have heard that some people use redundant igniters, especially for AP
clusters. But I wonder what happens if one of the igniters fails, leaving a
big chunk of unburned pyrogen that has to slide/be pushed out through the
nozzle. Can this cause an over-pressurization cato? or something else?
Am trying to decide whether it makes sense to experiment with dual-filament
4-lead igniters. Would like to hear of your experiences.
- posted 17 years ago