The four lengths of drogue bridle are joined at one point
upper end. Riveted within the lower end of the canister
by stitching to a 2.5-inch diameter light alloy ring.
is a shear ring, incorporating a shouldered portion
axially separated from the base of the canister by 0.1
When installed on the ejection seat, the lower
inch. At the lower end of the end cap, the same bolt that
drogue bridle spools are secured in two lower drogue
secures the drogue strop attaches a link assembly.
bridle release units built into the multipurpose initiators
When installed on the ejection seat, the link assembly
on the lower main beams. The upper drogue bridle
attaches to the drogue bridle and the canister assembly
spool is secured in an upper drogue bridle release unit
is retained in the body by a threaded locking ring. At the
in the top cross-beam and the extension strop spool is
upper end of the catapult body is riveted a threaded ring
attached to the lower end of the link assembly in the
onto which the locking ring is screwed when installing
drogue deployment catapult. The drogue bridle is
the drogue canister.
retained in channels on the rear face of the seat main
beams and folded into a frangible container mounted at
DROGUE AND BRIDLE SYSTEM.--The
the top rear of the main beams. The three bridle release
drogue and bridle assembly (fig. 2-9) is fitted to
units are activated at the correct time in the ejection
decelerate and stabilize the ejection seat prior to
sequence by gas pressure from an electrically operated
deployment of the personnel parachute.
impulse cartridge CCU-100/A installed in a breech in
The drogue bridle is manufactured from
the RH ballistic manifold.
2000-pound Kevlar cord environmentally protected by
The drogue is an Irvin T108-2, 57-inch diameter,
heat-shrink sleeving and consists of:
20-degree conical ribbon drogue, attached at the
two lower bridle legs, 42 inches long,
confluence of the rigging lines to a drogue strap. The
an upper bridle leg, 43 inches long, and
opposite end of the strap ends in a spool and is attached
by a nut and bolt to the link in the drogue deployment
an extension strop, 37 inches long.
catapult.
UPPER DROGUE BRIDLE
RELEASE MECHANISM
UPPER
BRIDLE LEG
RING
END CAP
LINK ASSEMBLY
EXTENSION
STROP
DROGUE
LOWER
BRIDLE LEGS
LOWER DROGUE
BRIDLE RELEASE
MECHANISMS
Figure 2-9.--Drogue deployed.
2-9
