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at 3, 9, and 6 o'clock.
The end covers at 3 and 9 o'clock (Figure 2.15-B)
differ only in that they are right and left hand; the cover at the
6 o'clock position (Figure 2.15-A) is "double" in that it provides a seal
for both scrolls at the 6 o'clock position.
The base plate and cap are
formed of 0.032" AMS 5536 steel; the seal spring is formed of 0.010" AMS
5542F steel and is riveted to the cap.
2.38
SCROLL SEAL SEGMENTS
a.
The seal segments are assembled to the forward side of the scroll
seal lips around the nozzle exit.
There is a total of 18 segments; nine
on the OD of the scroll and nine on the ID.
The scroll seal lips are
sandwiched between the seal segments and the rear frame flange on the OD
of the scroll and between the seal segments and the air seal flange on
the ID.
The segments are made of 0.015" Inconel X sheet.
The four end
segments and two center segments can be identified by a notch in the OD
of the inner segments and in the ID of the outer segments.
11-2.18
R-1
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