Table of Contents
Advertisement
T
c. The 36 body bound bolts located around the rim of the disc are
machined from AMS 6415E steel, hardened to Rc 38 to 40, and finished with
a black oxide coating.
d.
Scalloped flanges on the forward and aft sides of the disc near
the hub contain eight holes for attachment of the grease seal retainers.
e.
The wedge-shaped spacers (Figure 2.4-C) which are assembled to
the rim bolts on the forward and aft faces of the disc are machined from
titanium bar stock.
One face of the spacer is machined at an angle of 150
to provide a seating surface which is perpendicular to the center line of
the rim bolt.
A square shoulder is machined on the opposite face to fit
the slot in the blade retainer rings.
f.
Spacers are also machined from L605 stainless steel in a con-
figuration identical to that described above.
The spacers machined from
L605 material are approxiJ;i±tely twice as heavy as those machined from
titanium and are used as balance weights at assembly.
2.6
Blade Retainer Rings
a.
Each rotor assembly has two retainer rings; one forward and one
aft.
Both rings are formed with a U-shaped cross section from 0.020"
titanium sheet.
The configuration of the rings is similar but they are
not identical.
The lips on the forward retainer are about 5/16" high.
Tha lips on the aft retainer have different heights; the lip around the
inner diameter is about 5/16" high, the lip around the outer diameter is
about 9/16" high.
In addition, the aft retainer has 36 equally spaced
slots machined through the outer lip to provide clearance for the rotor
blade platforms.
Each retainer ring has 36 square holes pierced through
the surface which mate with the rim of the rotor disc; the sides of these
holes provide a seat for shoulders on the wedge-shaped spacers.
2.7
Rotor Blade Description
a.
The rotor has 36 blades which pump air downward to produce lift.
II-2.4
R-I
Advertisement
Chapters
Table of Contents
