TECHNIEK
(Specifications (An-2), in Engels)
GENERAL CHARACTERISTICS
• Crew: 1-2
• Capacity: 12 passengers
• Length: 12.4 m (40 ft 8 in)
• Wingspan:
Upper wing: 18.2
m (59 ft 8 in)
Lower wing: 14.2 m (46 ft 9 in))
• Height: 4.1 m (13 ft)
• Wing area: 71.52 m² (769.8 ft²)
• Empty weight: 3,300 kg (7,300 lb)
• Loaded weight: 5,500 kg (12,000 lb)
• Useful load: 2,140 kg ()
• Powerplant: 1× Shvetsov ASh-62R 9-cylinder supercharged
radial engine 1,000hp (750 kW)
PERFORMANCE
• Maximum speed: 258 km/h (139 knots, 160 mph)• Cruise speed: 190 km/h (100 knots, 120 mph)
• Stall speed: ~50 km/h (26 knots, 30 mph)
• Range: 845 km (456 nm, 525 mi)
• Service ceiling 4,500 m (14,750 ft)
• Rate of climb: 3.5 m/s (700 ft/min)
• Power/mass: 140 W/kg (0.83 hp/lb)
The An-2 was designed as a utility aircraft for use in forestry and agriculture. However, the basic airframe is highly adaptable and numerous variants have been developed. These include hopper-equipped versions for crop-dusting, scientific versions for atmospheric sampling, water-bombers for fighting forest-fires, flying ambulances, float-equipped seaplane versions, lightly armed combat versions for dropping paratroops, and of course the most common An-2T version, which is the 12-seater passenger aircraft. All versions (other than the An-3) are powered by a 1000-horsepower 9-cylinder Shvetsov ASh-62 radial engine, which was developed from the Wright R-1820.
An-2 on skis at Volosovo air field, Moscow regionThe An-2 has design features which make it suitable for operation in remote areas with unsurfaced airstrips:
• It has a pneumatic brake system (similar to those used on heavy
road vehicles) to stop
on short runways.
• It has an air line fitted to the compressor, so the pressure
in the tires and shock
absorbers can be
adjusted without the need for special equipment.
• The batteries are large and easy to remove, so the aircraft
does not need a
ground power unit
to supply power.
• There is no need for an external fuel pump to refuel the aircraft,
as it has an
onboard pump that
allows the tanks to be filled from simple fuel drums.
• It has a minimum of complex systems. The crucial wing leading
edge slats
that give the aircraft
its slow flight ability are fully automatic, being held
closed by the airflow
over the wings. Once the airspeed drops below
40 mph (64 km/h),
the slats will extend because they are on elastic
rubber springs.
• Take-off run: 170 m, landing run: 215 m (these numbers will
of course vary depending
on take-off/landing
weight, outside air temperature, surface roughness, and headwind).
bron: Engelstalige Wikipedia