OP-769 16" Three Gun Turrets Part 2 - Personal Page of GENE ...

OP 769 16 I NCH THREE GUN T URRETS
From the B- end, elevation response is s im ultane ­
ously transmitted through the upper response drive
b racket to the elevation indicator and by a s haft and
a n adjustable coupling to the r eceiver -regulat or. In
t he receiver- regulator, the B -end response rotates
the loading cam and combines with roller path and
eros ion correction input to r otate the stators of the
coarse and fine s ynchros. The combined B-end and
s t r oke response inputs pos ition the limit stop valve
V 34 through gear s ector F and the limit stop adjustment
cam.
St r oke response gear. A-end stroke r esponse
is transmItted to the receiver- r egulator from the
neut ral retur n device by a system of s hafts and gears,
In the r eceiver-regulator , str oke r es ponse is combined
with B- end response through differential gearing
to position the limit stop valve V34 through gear
s ector F and the limit stop adjust ment ca m. Str oke
res ponse represents gun elevating s peed; it is combined
with B-end (gun position) response to make the
limit stop valve V34 operate sooner at high speeds
than it does at low speeds as the gun approaches its
limit .
Loading cam. The loading cam is rotated by the
B-end elevahon r esponse through a gear t r ain; it is
gear ed dir ectly, without correction input, so that
the gun loading position is always the s ame. The
loading pilot valve V12 is positioned by the loading
cam through a cam follower and c rank a r rangement.
Smooth deceleration and stopping at the load position
are provided by the cam, which is adjustable for gun
loading position.
Limit stop valve V34. T he limit s top valve V34
(fig. 5-9) 1S located m a valve block at t he bottom of
the r eceiver-regulator valve compartment . P ositioned
CIRCU IT 816
TO CONTRO L
SELECTOR
STROKE
RESPONSE
COVER TO
;-SPEED
SYNCHRO
VALVE
BLOCK
COVER
TO AUTO
LIMIT
STOPS
COVER TO VALVE
COMPARTMENT
CIRC U IT B 13 TO
SUMP PUMP
MOTOR CONTROLLER
CIRCU IT BIB 10
MAIN AU XILIARY
TRANSFER SWITCH
Figure 5-8. E levation Receiver-Regulator
Mk 10 Mod 0, Front View
5-16
by a ca m follower and linkage from the limit stop
adjusting cam, V 34 s hifts servo pressure flow to
and drain from the ser vo piston P2 to dreelerate and
stop t he gun at its pr eset limit.
Limit st op adjusting cam. The limit stop adjust ­
ing cam (fig. 5-31) IS locatea in the s ynchro compartment
of the r eceiver-regulator. T he limit stop m echanism
has two elements of data in its input. These
a r e the position of t he gun (B-end response) and the
speed of the gun's movement (stroke response). Because
both the pOSition of the gun and the speed of
gun movement are r equired for s mooth, even stopping
at all speeds at a definite stop pOSition, the
stroke response is added to t he gun response in a
gear differential within the r eceiver -regulator case.
The output of the differential turns the limit stop adjusting
cam (fig. 5- 12).
Stabilizing valve Vl. The stabilizing valve Vi,
located m t he valve block at the bottom of the receiv ­
er-r egulat or (fig . 5- 9), acts with the stabilizing piston
P 1 to prevent overtravel of the gun (B - end) ,
which would r esult in os cillation about the elevation
order signal. P ositioned by the stabilizing linkage
L2 , the stabiliZing valve V1 directs r eceiver-regulat
or control pressur e to one end or the othe r of the
stabiliz ing pis ton P l. Movement of Pl pos itions the
amplifier piston P3 and the amplifier linkage L1 and
also moves the stabilizing valve Vl back to its original
position.
Aut omatic str oking valve V2. The automat ic
str oking valve V2 is located adjacent to the stabiliz ­
ing valve V1, as s hown in figure 5- 9. P os itioned by
the stabilizing linkage L2, the automat ic str oking
valve V2 ports s ervo pressure flow to and drain from
the ser vo piston through the limit stop valve V34 .
Synchronizing valve V3A and s ynchr onizing pilot
valve V15. The synchr onizing valve V3A and the
synchronizing pilot valve V15 ar e located in the valve
block at the upper part of the r eceiver-regulator
valve compartment (fig. 5-9). The r otor of t he
coarse s ynchr o actuates the synchronizing linkage L4
that positions these two valves. V 15 ports servo
pressure to V3A, which dir ects the servo pr essure
t o the fine s ynchro valve V3 as long as gun position
is within four degrees of gun elevation orde r. V3
then controls servo piston movement through the
amplifier pist on P3, stabilizing linkage L2, and automatic
s t r oking valve V 2. When gun position is more
than four degrees away from gun elevation order, V3 A
cuts off ser vo pressur e t o V3 and ports servo pressure
dir ectly to P3 to drive the gun at full speed toward
its synchronized position.
Loading pilot valve V 12 and loading transfer valve
V13 . The loadIng pilot valve V 12 (fig . 5 - 9) and the
wading transfer valve Vl3 are located in the valve
block in the cente r of the receiver - regulator valve
compartm ent. Together with the loading interlock
valve V44, these valves act to drive the gun at fu ll
speed t oward the LOAD position, deceler ate it, and
stop it ther e . The loading t r ansfer valve V 13 is pos
itioned by s ervo pressur e ported to it fr om the loading
interlock valve V44. The loading pilot valve V12,
pos itioned by the loading control linkage 1.3 , por ts
s ervo pr essur e through the loading transfer valve
V13 to the amplifie r piston P3.
Loading control linkage L3. The loading contr ol
linkage L3 is located in the valve compartment of
the receiver- regulat or (fig. 5-9). Actuated by rotation
of the loading cam, the linkage positions the
loading pilot valve V12 .