Missile with propulsion plug - has guide bush for gases to tracer charge in plug shutting off gap

摘要

The missile with propulsion plug has a tracer charge in its body and an ignition passage in the plug directing the propulsion gases at the charge on firing, while a gap is left between plug and body. A bush is inserted in the passage and/or the tracer charge recess, directing the gases straight at the tracer charge. Thus shuts off the gap between passage and recess on firing. ADVANTAGE - No gas escape occurs through the gap.