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3.4.3. Rotation speed around vertical axis during hovering < 45 degrees/s
3.4.4. Static ceiling for hovering 1500 m
3.4.5. Maximum ground climbing capacity 8 m/s
3.4.6. Minimal vertical descent rate while floating in autorotation regime at VDesc=90 km/h 7,4 m/s
3.4.7. Flight duration at Н=0 - 500 m with 5 % necessary fuel supply 3 hrs
3.4.8. Practical ground range ability with 5 % necessary fuel supply 450 km
3.4.9. Maximum exploitation load range +0.5…+2.5
3.5. GEOMETRICAL DIMENSIONS
3.5.1. Tail unit
Keel area 0.267 m2
Stabilizer area 0.15 m2
3.5.2. Cockpit
Internal dimensions:
- length 1.5 m
- width 1.4 m
- height 1.2 m
Entrance door 0.95х1 m
3.5.3. Undercarriage
- length 1.8 m
- distance between skids 1.6 m
3.6. ENGINE INFORMATION
3.6.1. Engine quantity, type, and marking:
one horizontal piston four-cylinder four-act liquid-cooled engine Subaru EJ-25.
3.6.2. General characteristics of Subaru EJ-25:
Engine working volume 2500 cm3
Engine power 165 horsepower (121 kW)
Engine dry weight 110 kg
Overall dimensions of the engine:
- length 0.8 m
- height 0.7 m
- width 0.5 m
3.6.3. Subaru EJ-25 operating limitations:
Continuous working time in regime - unlimited
3.6.4. Engine mounting units:
- three shock-absorbing pads, of which two are on the engine mounting, and one near the flywheel.
3.7. GEOMETRICAL ADJECTIVES OF THE ROTORS
3.7.1. Geometrical adjectives of the rotor
- rotor diameter 6.84 m
- blade number 3
- carrier blade chord 0.17 m
- blade profile NACA 63012/63015
- outline blade shape rectangular
- peripheral velocity of blade tip 205 m/s
- duty factor 0.0475
3.7.2. Geometrical adjectives of the anti-torque rotor
- rotor diameter 1.28 m
- blade number 2
- carrier blade chord 0.115 mm
- blade profile NACA 63012
- peripheral velocity of blade tip 186.3 m/s
- duty factor 0.1144
3.8. ALTITUDE RANGES, OPERATING TEMPERATURE RANGES, AND WEATHER CONDITIONS
3.8.1. Temperature range: –30…+30°С
3.8.2. Altitude range (limited by the absence of oxygen equipment) 0…3000 m
3.8.3. The helicopter is designated for use under normal weather conditions in daylight according to visual flight rules in any latitudes.
3.9. LIFETIME
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本文链接地址：Ultra light Helicopter AK1-3(3)
