Figure 2-19.Spreading gun assembly.
main parachute canopy, and it reduces random
inflation time of the canopy during high-speed
ejections (figs. 2-19 and 2-20).
The spreader gun assembly consists of a
spreader housing, 14 pistons, slugs, and retainers,
an impulse cartridge, a fail-safe mechanism, and
a hardware retention lanyard.
The spreader gun is provided with a fail-safe
assembly in the event of a cartridge malfunction.
The fail-safe assembly consists of a nylon sleeve
clipped to the sheer band assembly.
A safety pin is inserted in the firing mechanism
during handling to prevent accidental firing. The
cartridge for the spreader gun is threaded into the
breech of the housing and has a retention cord
attached. The spreader gun is positioned at the
hem of the main parachute between the retaining
cord and lower firing lanyards.
The retaining cord is looped around the vent
lines and the pilot parachute connector cord.
Figure 2-20.Spreading gun assembly parts breakdown.