Aviatika-MAI-205 light agricultural autogiro by OSKBES MAI
| General Information | ||
|---|---|---|
| Type | MAI-205 | |
| Function | Crop duster | |
| Year | 2001 | |
| Crew | 1 | |
| Powerplant | ||
| Type | Rotax-914ULS | |
| Takeoff Power | 115hp | |
| Nominal Power | 100hp | |
| Size (m) | ||
| Length (w/o main rotor) | 5.32 | |
| Length (with main rotor) | 9.0 | |
| Height | 2.87 | |
| Main rotor diameter | 9.0 | |
| Rotor area | 63.6m2 | |
| Filling | 0.0453 | |
| Weights (kg) and loads | ||
| Empty | 370 (with chemical gear) | |
| Loaded | 410 (no chemical gear) | 530 (maximum) |
| Rotor Load (kg/m2) | 6.44 | 8.33 |
| Power load (kg/hp) | 4.1 | 5.3 |
| Speed (km/h) | ||
| Cruising, at 0m | 44 | 30 |
| Boosted, at 0m | 145 | 115 |
| Optimal for climb | 90 | |
| Technical limit | 160 | |
| Takeoff (no jump) | 60 | 66 |
| Takeoff (with jump) | 12 | 8 |
| Landing (with roll) | 35 | 40 |
| Landing (no roll) | 5 | 10 |
| Maneuverability | ||
| Turn radius | 30m | |
| g-Loads | +3.5/-0.5 | |
| Roll (m) | ||
| Takeoff (no jump) | 50 | 100 |
| Landing (with roll) | 35 | 40 |
| Landing (no roll) | 5 | 10 |
| Range km | ||
| Without dusting gear | 185 | n/a |
| Ceiling (m) | ||
| Practical | 4250 | 1750 |
| Climb (m/sec) | ||
| at 0m | 5.1 | 2.7 |
| Payload | ||
| Fuel | 30l, 22kg | |
| Chemicals | - | 100l, 70kg |
| other | ||
| Estimated cost | US$40,000 | |
;)
|
(OSKBES MAI)
The "205" is an very light jumping autogiro for non-aerobatic flights (training etc). Design program started in 1997, Construction of prototype began at the MAI Experimental-Trial Plant in 1998. Preliminary trials began in 2000, and first flight took place on April 26, 2001. MAI-205 was ordered and financed by undisclosed client from former Soviet republic Moldova.
MAI-205 construction is based on the MAI-890 ultralight. On the early design stages the autogiro was even considered as a field conversion of the biplane aircraft. But finally, only few parts (tail and nosewheel) remained unchanged. MAI-205 fuselage is made of aluminum alloy tubes. Enclosed fiberglass pilot's cabin has two side doors and extensive glazing. Back of the cabin is covered with noise-absorbing material. Wire-and-strut braced tailplane and rudder are of conventional type, covered with fabric.
;)
|
(OSKBES MAI)
Tricycle landing gear uses titanium alloy springs, all three wheels have 300x125mm pneumatics. Main gear has hydraulically activated brakes. Nosewheel is steerable, linked directly to rudder pedals. Controls (rudder, elevator, main rotor) are reversible, combination of rods and wires.
;)
|
(OSKBES MAI)
Vertical (jumping) takeoff is provided by pre-start acceleration of the main rotor. Switchable transmission boosts the rate to 40% above the cruising. When pilot pushes the "Jump" button, main rotor pitch automatically increases to 10°. For 2...3sec kinetic energy of the rotor provides sufficient lift for takeoff and acceleration (by the propulsion propeller). After takeoff, main rotor pitch returns to normal 4°, and aircraft goes into conventional autogiro climb.
Flight indicators include speed gauge, compass, altimeter, slide indicator, electronic engine control unit "FLYdat" and main rotor rate indicator.
;)
|
(OSKBES MAI)
Special snap-on crop dusting kit is developed for this autogiro. This equipment is also created at MAI and is a second model, improved version of one installed on the MAI-890SKh. Two conformal chemical tanks are visible right behind the cabin, under the engine. They are equipped by electric pump, which is also serves for non-stop mixing of the chemicals and on-the-ground tank cleaning. Dispensers are airflow driven. Control unit in the cockpit has a digital indicator of the chemicals
Rotax-914ULS (Austria) is a piston liquid-cooling opposite type 4-cylinder 4-stroke turbocharged carburetor engine.
| Predecessors | Modifications |
|---|---|
 MAI-890 |
None |
