are installed on hubs mounted at each end of the shuttle
frame. The shuttle is installed in a track between and
above the launching engine cylinders. The trough
covers form the shuttle track, which supports and
guides the shuttle.
The bearings of the rollers are lubricated through
fittings, which are accessible through the slot in the
shuttle track. The shuttle blade is part of the shuttle
frame and is the only part that protrudes above the
shuttle track. The nose gear launch spreader is attached
to the shuttle blade.
WATER-BRAKE CYLINDERS
The water-brake cylinders (fig. 4-27) are installed
at the forward end of the launching engine cylinders.
4-19
BRIDLE SPREADER
GUIDES
RAMP
PIN
FRAME
DOGS
RETAINER
NUT
ROLLER
REAR SWEEPER
PLATE AND CLEVIS
NOSE GEAR LAUNCH
SPREADER
ABEf0427
Figure 4-26.—Shuttle assembly.
LAUNCHING
ENGINE CYLINDER
JET RING
CHOKE RING
FWD
END PLUG
CHOKE
VANE
ANNULUS RING
STRIKER RING
WATER
SUPPLY
ABEf0428
Figure 4-27.—Water-brake cylinder installation.
