This summary covers pertinent information on areas, dimensions and
airfoil data.
Rotor Characteristics*
Main
Tail
Number of Blades
3
2
Rotor Diameter, Feet
26.83
4.25
Rotor Disc Area, square feet
565.49
14.19
Blade Cord (constant), inches
6.75
4.81
Blade Twist, degrees
-8°39’
-8°00’
Blade Area (total blades x C x R),
square feet (tabs not included)
22.64
1.69
Solidity (thrust weighted)
.04
.116
Airfoil Section, NACA
0015
0014
(modified)
δ
3
, degrees
0
30°
* Rotor Dimensions do not take into account blade tab area. The above
characteristics are valid for the 269A1185-1 (23.75 in. tab) and
269A1185-5 (74.25 in. tab) main rotor blades.
General
Schweizer RSG, LLC.
Model
269D
Helicopter
GENERAL
DIMENSIONAL
DATA
Pilot's Flight Manual
1-9
Reissued:
16
Jan 2019
Book 3.indd 21
8/4/19 1:25 PM