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An-2 Single-engine general-purpose biplane versions:
An-2P (passenger with seating for 12 passengers),
An-2PK (five seat executive), An-2P-Photo (photogrammetry),
An-2R (agricultural; 1300 kg liquid or dry chemicals),
An-2S (ambulance, 6 stretchers and medical attendants),
An-2T (transport, 1500 kg cargo or 12 passengers),
An-2TD (for parachute jumping), An-2TP (cargo-passenger),
An-2M (on floats).
An-2P
An-2P can be characterized by the following: wings - unequal-span
single-bay biplane. Wing section RIIS 14o/o (constant). Dihedral,
both wings, approx. 2o48'. All-metal two-spar structure, fabric
covered aft of front spar. Differential ailerons and full-span
automatic leading-edge slats on upper wings, slotted trailing-edge
flaps on both upper and lower wings. Flaps operated electrically,
ailerons mechanically. Fuselage - all-metal stressed-skin
semi-monocoque structure. Crew of two on flight deck, with
access via passenger cabin. Standard accommodation for 12
passengers, in four of three rows with center aisle. Two folding
seats for children on the aisle between the 1st and 2nd rows.
Toilet at rear cabin on starboard side. Overhead racks for
baggage of up to 160 kg, with space for coats and additional
40 kg of baggage between the rear pair of seats and toilet.
Emergency exit on starboard side at rear. Walls of cabin are
lined with glass-wool mats to reduce internal noise level.
Cabin heating and starboard windscreen de-icing by engine
bleed air; port and center windscreen are de-iced electrically.
Cabin ventilation by. ram-air intakes. Air-conditioning system
in An-2R. Tail unit - braced metal structure. Fabric-covered
tailplane. Elevators and rudder operated mechanically. 
Electrically-operated trim tab in rudder and elevator. Landing
gear - non-retractable split-axle type, with long-stroke oleo
shock-absorbers. Main wheel tyres size 800 X 260 mm, pressure
230 kPa (2.3 kg/cm2). Pneumatic brakes on main units. Fully-castoring
and self-centering tailwheel with electro-pneumatic lock.
Interchangeable ski landing gear available optionally. Power
plant - one 736 kW (9B7 hp) PZL ASz-62IR nine-cylinder radial
air-cooled engine, driving an AW-2 four-blade variable pitch
metal propeller. Six fuel tanks in upper wing, with total
capacity of 1200 litters. Oil capacity - 120 litters. Systems:
Compressed air cylinder of 8 litters capacity for pneumatic
charging of shock-absorbers and operation of tailwheel lock
at 5000 kPa (50 kg/cm2) pressure and operation of main-wheel
brakes at 1000 kPa (10 kg/cm2). DC electrical system is supplied
with basic 27 V power by an engine-driven generator and a
storage battery. CO2 fire extinguishing system with automatic
fire detector. Equipment: Dual controls and blind-flying instrumentation
standard. R-860. HF and R-842 VHF radio transceivers (or R56102A
or Becker AR400 or Narco KX-170), RW-UM radio altimeter, ARK-9
radio compass, MRP-5EP marker beacon receiver, GB-1 gyro compass,
GPK-48 gyroscopic direction indicator, and SPU-7 intercom.
DESIGN DEVELOPMENT: The prototype of this large biplane was
designed according to the specification of the Ministry of
Agriculture and Forestry of the USSR and its first flight
was made on 31 August 1947. It was powered by a 560 kW (7B0
hp) ASh-21 engine and was known as the SKh-1. In 1948 design
went into production in the USSR as the An-2 with a 736 kW
(987 hp) ASh-62 engine. License rights were granted to China
where the first locally-produced An-2 was completed in December
of 1957. Since 1960, apart from a small Soviet-built quantity
of a developed version known as An-2M, , the continued production
of the An-2 has been taken over by the Polish PZL factory
at Mielec, the origin license arrangement providing for two
basic versions: the An-2T transport and An-2R agricultural
version. The first Polish-built An-2 made its first flight
on 23 October 1961. Since the very beginning of An-2 production,
PZL-Mielec has made numerous improvements to the airframe
of An-2R resulting in extension of TBO from 900 hr in 1961
to 1500 hr in 1970 and 2000 hr in 1973. The service life was
extended to 15 900 hr. More than 90 per cent of the aircraft
made up export deliveries, mainly to the former USSR. Since
1960 - 10 000 An-2s were built including 5500 agricultural
versions.
AN-2 TECHNICAL DATA:
Dimensions
| Wing span upper,lower |
18.18m, 14.24m |
| Lenght Overall (tail up),(tail
down) |
12.71m, 12.40m |
| Height overall (tail up),(tail
down) |
6.10m, 4.00m |
| Wheel track |
3.45m |
| Propeller diameter |
3.60m |
| Propeller ground clearance |
0.69m |
| Wing area |
71.6m |
| Cargo door (port) mean
height, mean width |
1.55m, 1.39m |
Dimensions internal:
Cargo compartment length, Max height, Max width
|
4.10m, 1.80m, 1.60m |
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WEIGHTS AND LOADINGS
| Weight empty |
3450kg |
| Max T-O weight |
5500kg |
| Useful load |
2050kg |
| Maximum fuel weight |
900kg |
| Max wing loading |
78.82kg/m |
| Max power loading |
5.5kg/hp |
| Performance
(at AUW of 5250 kg) |
| Max level speed at 1500
m |
253km/h |
| Econ. cruising speed |
185km/h |
| Stalling speed |
90km/h |
| Max rate of climb at S/L |
3m/s |
| Service ceiling |
4400m |
| T-O run.(grass) |
170m |
| T-O to 10.7, m (grass) |
320m |
| Landing run (grass)(hard
runway) |
185m, 170m |
| Range
at 1000m with 700 kg payload 1370 km Life time |
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FRAME
| Overhauls |
An-2T,An-2TD,An-2TP,An-2S,
AN-2P Life time (flight hours) |
An-2R Life
time (flight hours) |
| Till 1 Overhaul |
2500 |
2000 |
| Since 1 till 2 overhaul |
2500 |
2000 |
| Since 2 till 3 overhaul |
2200 |
1900 |
| Since 3 till 4 overhaul |
2200 |
1900 |
| Since 4 till 5 overhaul |
2000 |
1800 |
| Since 5 till 6 overhaul |
2000 |
1800 |
| Since 6 till 7 overhaul |
1800 |
1600 |
| Since 7 till 8 overhaul |
1800 |
1500 |
| Since 8 till 9 overhaul |
1500 |
1500 |
| Since 9 till 10 overhaul |
- |
1500 |
| Life time |
20000 |
18000 |
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Engine ASz-62IR-16
Engine life time till first overhaul - 1200 motohours.
Engine life time between overhauls -1000 motohours.
Total life time is 6200 motohours.
Propeller AB-2
Propeller life time till first overhaul 2000 motohours.
Propeller life time between overhauls 1500 motohours.
Total life time is 8000 motohours.
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