| Aircraft performance |
Models of helicopters |
| AK1-3 |
R22 Beta II |
Schweizer 300C |
| Basic |
| Manufacturing company |
|
Ukraine |
USA |
USA |
| Manufacturer |
|
DB Aerocopter Ltd. |
Robinson Helicopter Company |
Schweizer Aircraft Corporations |
| Crew + passengers |
|
1+1 |
1+1 |
1+2 |
| Dimensions |
| Fuselage length |
m |
5,806 |
6,58 |
6,76 |
| Fuselagewith rotors length |
m |
8,096 |
8,76 |
9,40 |
| Maximum cabin width at the shoulders level |
m |
1,35 |
1,12 |
1,30 |
| Helicopter height |
m |
2,27 |
2,72 |
2,65 |
| Lifting propeller diameter |
m |
6,84 |
7,68 |
8,18 |
| Disc area |
m^2 |
36,74 |
46,21 |
52,49 |
| Anti-torque rotor diameter |
m |
1,28 |
1 |
1,3 |
| Main wheel track |
m |
1,65 |
2 |
1,99 |
| Engine |
| Type and model |
|
SUBARU EJ25 |
Textron Lycoming О-360 |
Textron Lycoming HO-360-DIA |
| Fuel type |
|
A 95 |
L 100 |
L 100 |
| Takeoff output |
kW/hp
|
115/156 |
93/124 |
142/190 |
| Standard fuel range |
l |
72 |
72.6 |
82 |
| Fuel flow rate |
l/h |
24-35 |
30-38 |
35-45 |
| Weight data |
| Gross weight |
kg |
650 |
621.5 |
930 |
| Empty helicopter weight |
kg |
398 |
391.5 |
499 |
| Disposable load |
kg |
252 |
230 |
431 |
| Performance |
| Maximum speed |
km/h |
186 |
189 |
176 |
| Course speed |
km/h |
160 |
177 |
159 |
| Maximum rate-of-climb |
m/s |
8,5 |
5 |
7 |
| Dynamic ceiling |
m |
3000 |
3000 |
3000 |
| Hover ceiling (without ground effect) |
m |
1300 |
1350 |
1700 |
| Maximal flying distance |
km |
350 |
320 |
354 |
| Maximum endurance |
h |
2,6 |
2,2 |
3,3 |
| Minimum vertical sink rate upon planning inautorotation regime |
m/s |
8,4 |
8 |
9 |