The one-piece tail ro tor drive shaft re quires no in ter me di ate cou plings
or bear ings. Ex ces sive os cil la tion of the drive shaft dur ing ac cel er a -
tion and de cel er a tion of the drive sys tem is sup pressed by the drive
shaft damper, lo cated near the cen ter of the tailboom.
The tail ro tor trans mis sion is lo cated at the aft end of the tailboom and
has a self-con tained lu bri cant sup ply. The tail ro tor is mounted on the
out put shaft of the tail ro tor trans mis sion and con sists of two vari -
able-pitch blades. The blades are in ter con nected by a high-strength,
ten sion-tor sion strap as sem bly.
The he li cop ter main fuel tank has a ca pac ity of 30 or 33 U.S. gal lons
(113 or 114 li ters) de pend ing on air craft S/N, and is lo cated ex ter nally
on the right-hand seat struc ture; an aux il iary tank may be in stalled aft
of the left-hand seat struc ture. The aux il iary fuel tank with a ca pac ity
of 19 U.S. gal lons (72 li ters) may be at tached to the left side of the
bulk head. The tanks (main and aux il iary) may be ser viced from ei ther
filler neck by grav ity. See Sup ple ment CSP-C-1R for the 65 gal lon
aux il iary fuel sys tem or CSP-C-1U for the 66 gal lon aux il iary fuel sys -
tem.
GEN ERAL DI MEN SIONAL DATA
This sum mary cov ers per ti nent in for ma tion on ar eas, di men sions, and
air foil data.
Air foil Areas and Ra tios
Eng lish
Met ric
Main ro tor blade area
22.64 ft
2
2.103 m
2
Main ro tor geo met ric disc area
565.49 ft
2
52.534 m
2
Main ro tor geo met ric
so lid ity ra tio
0.04
0.04
Tail ro tor blade area
1.69 ft
2
0.157 m
2
Tail ro tor geo met ric disc area
14.19 ft
2
1.318 m
2
Tail ro tor geo met ric ef fec tive
so lid ity ra tio
0.116
0.116
Hor i zon tal sta bi lizer area
(to tailboom)
2.65 ft
2
0.246 m
2
Ver ti cal sta bi lizer area
(to tailboom)
2.53 ft
2
0.235 m
2
General
SCHWEIZER
Model 269C Helicopter
Pilot's Flight Manual
Reissued:
16 Jan 2019
1-9
This Document contains technical data subject to EAR. See WARNING and classifications on first page.
CSP Book 1 CSP-C-1.indd 35
8/4/19 12:45 PM
