| Aircraft Performance | Models of helicopters | |||
|---|---|---|---|---|
| AK1-3 | R22 Beta II | Schweizer 300C | ||
| Manufacturing company | DB Aerocopter | Robinson Helicopter Company | Schweizer Aircraft Corporation | |
| Crew + passengers | 1+1 | 1+1 | 1+1 | |
| Fuselage length | m | 5.806 | 6.58 | 6.76 |
| Fuselage with 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 | m2 | 36.74 | 46.21 | 52.49 |
| Anti‐torque rotor diameter | m | 1.28 | 1.00 | 1.30 |
| Main wheel track | m | 1.65 | 2.00 | 1.99 |
| AK1-3 | R22 Beta II | Schweizer 300C | ||
|---|---|---|---|---|
| Type and model | m | SUBARU EJ25 |
Textron Lycoming O-360 | Textron Lycoming O-360 |
| Fuel type | A95 | L100 | L100 | |
| 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 |
| Gross weight | kg | 650 | 621.5 | 930 |
| Empty helicopter weight | kg | 398 | 391.5 | 499 |
| Disposable load | kg | 252 | 230 | 431 |
| AK1-3 | R22 Beta II | Schweizer 300C | ||
|---|---|---|---|---|
| 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 in autorotation regime |
m/s | 8.4 | 8 | 9 |
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Wide 53'' cabin. Excellent neutral conventional dual collective counterbalance system and light control forces..
Composite Main Rotor and Tail Rotor blades with non linear twist. Three easily attachable/detachable blades. 15mins / two persons.
The excellent power to weight. AK1-3 out-climbs the 300CBi by 500ft/min with two persons on board.
"Is there any possibility of trailing this aircraft in the australian conditions for mustering as from what you have demonstrated to me this aircraft could be the next generation mustering helicopter."– K. F., Oz
"I can never see my self flying R22 again after flying some good hours on this machine, Out standing quality and strength. Pleasure to fly this smooth and quiet two seat helicopter"– Aaron Fredrick Bate, SA
"I rate the engineering design and build quality as outstanding. There is copious use of carbon for all blades and cabin and also plenty of Titanium for weight savings.– Albert Questiaux, SA
It would be an injustice to compare this helicopter to existing crop of kit-helicopters. I would rate this craft between a R22 Beta II and the Schweitzer 269C in terms of its weight lifting capacity, performance and cabin size.
"I am proud of the work you are doing for the helicopter industry. You are a true pioneer!"– J.H., Knoxville, Tennessee
