Schweizer 269C-1 - General Dimensional Data; Airfoil Data; Airfoil Areas and Ratios

GEN ERAL DI MEN SIONAL DATA
This summary covers pertinent information on areas, dimensions, and airfoil
data.
Airfoil Areas and Ratios Eng lish Met ric
Main rotor blade area 22.64 ft
2
2.103 m
2
Main rotor geometric disc
area
565.49 ft
2
52.534 m
2
Main rotor geometric solidity
ratio
0.04 0.04
Tail rotor blade area 1.69 ft
2
0.157 m
2
Tail rotor geometric disc
area
14.19 ft
2
1.318 m
2
Tail rotor geometric
effective solidity ratio
0.116 0.116
Horizontal stabilizer area (to
tailboom)
2.65 ft
2
0.246 m
2
Vertical stabilizer area (to
tailboom)
1.00 ft
2
.093 m
2
Airfoil Data Eng lish Met ric
Main Rotor
Diameter 26.83 ft. 8.178 m
Blade chord (constant) 6.75 in. 171.5 mm
Airfoil (NACA) 0015
Blade twist -8°39´
Number of blades 3
RPM limits, power on 442 to 471 rpm
power off 390 to 504 rpm
General
Pilot's Flight Manual
1-8 Reissued: 16 Jan 2019
SCHWEIZER
Model 269C-1 Helicopter
CSP book 2..indd 34 8/4/19 12:53 PM