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   The AN-3 airplane keeps all AN-2 modifications and can be used for any purposes.
The modification AN-2 into AN-3 allowed:
- to increase reliability of the airplane;
- to ensure comfort for the crew and the passengers by reducing noise and vibration,
ventilation and heat systems;
- to make fuselage longer and to install an additional door for the crew;
- to increase take-off weight of the airplane and payload by 300 kg respectively (for
forest fire-fighting variant - by 600 kg);
- to increase safety of the crew (during hard landing) by means of installation of
additional partition (barrier) between a cockpit and a cargo cabin.
- to raise air chemical work productivity by 1,6 times, thanks to new agricultural
equipment, improved flight performance, loading of chemicals without stopping an engine
(due to propeller braking and stopping).
The airplane can be modified into transport variant, if there are no Air chemical
works.
Main differences of the AN-3 airplane. - there is a pilot door between the 5-th and the
6-th fuselage frame on the left board; - horizontal tail is at +1 angle. Stabilisator and
elevator are updated
- horn balance is equipped, vertical tail is modified. New rudder with decompensator is
installed;
- TBD-20 turboprop engine (running on any type of kerosene) is installed;
Specific fuel consumption - 0,225 kg. Engine air-intake gauze filter is located on the
top of the cowling. Oil system includes a tank for 40 litres (instead of 125 litres on
AN-2) as oil consumption is greatly reduced (0,2 kg per hour). Engine mass is 285 kg, that
is twice less than ASH-62 engine. Engine starts without preheating at the temperature -
25'C (using synthetic oil - 40'C). Start -up time is about 40 seconds. Engine response
time (from idling conditions to take-off regime) is 2,5 seconds.
- new engine instruments and control system;
- more powerful GSP-6000 generator, 20 NK MBN accumulators, PT-200 transducers;
- new fire-protection system with SPS-3 fire warnings and fire suppression system with two
extinguishers;
- instrument panel is completed in accordance with the air - worthiness standards;
- slight-control and navigational equipment includes AGK-17US
- aero horizon DA-3OP combined instrument ARK-25 compass system;
- at customer's request A-137 radio altimeter, A-611 marker receiver, radio compass can be
installed;
- flight recorder of power plant and aircraft (BUR-4) is installed.
the additional fuel tanks for 400 litres are available for installation by customer's
request.
The modernization allowed:
- to use as a fuel any aviational kerosene;
- to increase: into 1,2 times the payload
- into 1,2 times the flight speed;
- into 1,85 times the climbing ability;
- to increase flight reliability and safety;
- to ensure comfort for the crew, to lower noise and vibration in the cockpit and to make
convenient entrance into it;
- to preserve ability of carrying out the flights from ground sites with length of 500 m;
- to improve economical figures: airplane productivity increased into 1,5 times.
Comparative performance of the AN-2 and AN-3 aircraft
| |
Transport variant |
Agricultural variant |
| |
AN-3 |
AN-2 |
AN-3 |
AN-2 |
| Engine: |
| type |
turboprop TVD-20 |
reciprocating ASh-62IR |
turboprop TVD-20 |
reciprocating ASh-62IR |
| power, kW (ë.ñ.) |
1010 (1375) |
736 (1000) |
1010 (1375) |
736 (1000) |
| type of fuel |
T1,TC2,RT |
B91 |
T1,TC2,RT |
B91 |
| fuel consumption kg/km |
0,8-0,9 |
0,7-0,8 |
0,9-1,0 |
0,8 |
| acceleration, sec |
2,5 |
| maximum take-off mass,kg |
5800 |
5500 |
5800 |
5250 |
| maximum landing, kg |
5800 |
5500 |
5800 |
5250 |
| maximum payload, kg |
1800 |
1500 |
|
|
| maximum chemicals mass,kg |
|
|
1800 |
1250 |
| Cruising speed km/h |
220-230 |
190 |
|
|
| Practical ceiling, m |
4400 |
4400 |
|
|
| Optimum flight altitude, m |
2000 |
1000 |
|
|
| Practical flight range, km |
| with the cargo 1500 kg |
770 |
530 |
|
|
| with the cargo 1250 kg |
900 |
750 |
|
|
| Take-off run, m |
140 |
230 |
|
|
| landing roll, m |
95 |
190 |
|
|
| Tank for chemicals capacity, l |
|
|
2200 |
1400 |
| Work speed at ACW,km/h |
|
|
150-170 |
150-160 |
| Efficiency, hectare/h |
|
|
|
|
| pollination (150 kg/hectare) |
|
|
74 |
42 |
| pulverization (50 l/ hectare) |
|
|
132 |
81 |
| middle |
|
|
114 |
70 |
| Required length of a runway, m |
500 |
500 |
500 |
500 |
| Rate of climb, m/sec |
5 |
2,7 |
3,3-3,7 |
1,7-2,0 |
| Airfield elevation, m |
to 3000 |
to 1500 |
to 3000 |
to 1500 |
| Crew, persons. |
2 |
2 |
1 |
2 |
The airplane AN-3 may be delivered in following kinds:
- transport type;
- convertible;
- sanitary;
- forest fire fighting;
- landing.
Producer:
POLYOT PO
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Video:
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