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Antonov SKh-1
Antonov An-2
Yunshuji Y-5
Nanchang Y-5
PZL An-2

 

an-2

 

Designed originally for agricultural duties two prototypes of what became the An-2 were designated SKh-1 and the first example made its first flight on August 31, 1947. The type was developed by OKB-153 (Design Bureau 153) which was later named after Oleg Antonov. The prototypes had a Shvetsov ASh-61, respectively ASh-62, radial engine with the latter being selected for production aircraft. With an all metal fuselage and fabric wings aft of the main spar, the aircraft can carry a crew of 2 plus 14 passengers. NATO code name ‘Colt’ and is designated in US DoD nomenclature as the "Type 22".

 

Externally, the An-2 engine - powering a four-bladed propeller - is held in the extreme forward of the fuselage with the cockpit directly aft. The cockpit is heavily glazed and observation port windows can be seen along the fuselage sides. Wings are of an unequal span single bay biplane design, all metal construction, with fabric covering. Each wing is connected via a single large vertical strut making up a single wing bay and each wing has dihedral. The wings have full length automatic leading edge slats and ailerons droop with flap actuation to provide great STOL performance. Fuselage is of all-metal stressed skin semi-monocoque construction. The fuselage tapers slightly into the empennage which has a single large, smooth-edge vertical tail fin and stabilizers mounted to either tail fin side. Tail is a braced all metal structure with fabric covering. Wing area is 770 square feet total. Ailerons, rudder, and elevators are all manually controlled with pushrods and cables. Flaps and trim electrically operated.
 
The landing gear is of conventional configuration (tail wheel design) with split axle, long stroke oleo shock absorbers on the main mounts and a fully castoring and self centering tail wheel. The main landing gear legs feature wheel bogies angled inwards with each leg braced at two points along the underside of the fuselage. Brakes are pneumatically operated. Normally two pilots, but may be flown single pilot when no passengers are aboard.
 
The compressed air system has an 8 litre (490 cu.in) air cylinder at 49 bars (711 PSI) maintained by an engine driven AK-50M compressor and AD-50 relief valve. A pressure gauge is on pilot's left hand console. A pressure reducer supplies 10 bars (145 PSI) for the main brakes. The Air Pressure is required for the pneumatic main wheel brakes, but can be used to charge the landing gear shock absorbing oleo-pneumatic struts when dry nitrogen is not available. A fitting is also available to fill the tires from this system. The 8 litre air cylinder can also be charged from appropriate ground support equipment.
 
The electrical system has a 24 VDC battery with engine driven generator to maintain charge. A Voltmeter and Ammeter are on the Instrument Panel. The 28 VDC generator requires at least 900-1000 RPM to kick in. 36 Volt 3 phase 400hz AC power, supplied by two convertors, is used to power the Russian Gyroscopic compass, Artificial Horizon and ADF.
 
Nine fire detectors are located throughout the engine compartment. If the Fire Warning Lamp light, the CO2 system can be activated by breaking the safety seal and pushing the button. The CO2 bottle has an electrically activated pyro-technic cartridge to release the CO2 into the collector.  Portable CO2 Fire Extinguishers are normally installed in the cockpit and cabin as well.
The Oil System consists of a 125 litre (33 gal) max permitted 22 gal tank, suction pump and an external oil cooler with electrically controlled shutters. They use Aeroshell 100 Oil.

 

Accommodations are generally made for a crew of one pilot and cabin seating can hold an additional 12 passengers.

Almost 3600 An-2 were built at Kiev, ending in mid-1960s after limited manufacture of specialised agricultural An-2M. Production was transferred to PZL Mielec, Poland.

 

Ant-An2-03

 

The An-2R developed and built by WSK-PZL in Poland was a special agricultar model. Introduced in 1964, it carried a fiberglass container for 1960 litre pesticides or 1350 kg fertilisers.

China acquired licence and has built Yunshuji-5 (Y-5) versions from 1957.China has produced many versions of the An-2 beginning with the Fong Shou-2 ("Harvester-2"). This was the first An-2 built to agricultural specifications. The Nanchang Y-5 is a transport version since taken over in production by Harbin with 727 examples delivered. Nanchang Y-5II was an agricultural form seeing production number 229. Shijiazhuang Y-5A was a light passenger model based on the An-2T and produced in 114 examples. The agricultural derivative became the Shijiazhuang Y-5B based on the An-2 SKh. The PLAAF makes use of the Shijiazhuang Y-5B(T) para-drop model. The Nanchang Y-5C is an amphibious version of the Y-5A while the Nanchang Y-5D is a bomber crew trainer. The Nanchang Y-5K became a VIP passenger transport seating five.

By 1991 over 18.000 of the different types were built in the Ukraine (5000), Poland (12000) and China (1000).
In 1994 the Polish manufacturer of the An-2, Meliec, produced a version which conformed to the US FAR 23 requirements.

The Antonov An-2 has seen combat action. It was debuted during the Korean War (1950-1953) and later in the Vietnam War - the latter by the North Vietnamese. Some An-2's were converted from their traditional crop dusting roles to become make-shift bombers in the Croatian War of Independence (1991).

Notable operators of the An-2 have included Afghanistan, China, Cuba, East Germany (and Germany proper), Egypt, Georgia, Hungary, Iraq, Laos, Lithuania, Macedonia, North Yemen, North Korea, Poland, South Korea, Romania, Russia, Serbia, Somalia, Sudan, Syria, Turkey, Ukraine, Vietnam, Yemen and Yugoslavia.

The An-3 was originally considered as a turboprop development of An-2, but was offered as a midlife upgrade of the An-2 to have a turboprop engine and other improvements (first flown 1980).
 

Another organization working on a "better" An-2 is SibNIA (Siberian Aeronautical Research Institute) in Novosibirsk, Russia. In this version, the An-2MS (An-2MC in Russian) and later usually referred to as the TVS-2MS), the radial engine was replaced by an 1,100 hp Honeywell TPE331-12UHR turbine, driving a five-bladed Hartzell propeller. The first An-2MS/TVS-2MS was first flown on September 5, 2011 and by 2015 well over fifteen examples had been delivered by SibNIA and Rusaviaprom JSC, all built, from existing An-2 airframes retaining the An-2 wings and tail feathers.

 

An-2-100
An-2-100

 

An-2 04 was modified for meteorological research by the addition of an observation cockpit in front of the fin, and a turbo-supercharger on its Ash-621R radial engine.
 
Ant-An2-07
 
On 19 July 1954 it established an FAI altitude record for iits class of 11,248 m (36,880 ft).

 

Gallery

 

 

 


Antonov An-2 (Colt)
Engines: 1 x Shvetsov ASh-62IR 9-cylinder supercharged radial, 1,000 horsepower.
Length: 40.68ft (12.4m)
Wingspan: 59.71ft (18.20m)
Height: 13.45ft (4.10m)
Empty Weight: 7,275lbs (3,300kg)
Maximum Take-Off Weight: 12,125lbs (5,500kg)
Maximum Speed: 160mph (258kmh; 139kts)
Cruise: 100-110 kt.
Maximum Range: 525miles (845km)
Rate-of-Climb: 700ft/min (213m/min)
T/O roll: 220 ft.
Service Ceiling: 14,750 ft (4,500m)
Accommodation: 2 + 12

 

Engine: Shvetsov ASz-62 IR, 1000 hp max
Propeller: 4 blade AW-2
Wing Span: 59 ft 8 in / 18.18 m or 14.2 m / 46 ft 7 in
Length: 41 ft 9 in / 12.74 m
Height: 4.1 m / 13 ft 5 in
Total Wing Area: 256.6 sq.ft
Upper wing area: 156.2 sq.ft
Lower wing area: 100.4 sq.ft
Empty weight: 7,600 lb
Max Take Off weight: 12,125 lb / 5500.0 kg
Max Landing weight: 11,574 lb
Max fuel: 2,000 lb / 312 USG
Oil Qty: 22 Gallons Max / 13 Gallons minimum to 18 Gallons normal
Useful load max fuel: 2,525 lb
Useful load half fuel: 3500 lbs
VNE:  162 kt
VFE: 70 kt
Best Glide: 65 kt
Maximum Speed: 139kt / 160 mph / 258 km/h
Economy Cruise: 100kt / 115 mph
Minimum Speed: 49kt / 56 mph
Take-Off Speed: 43kt / 50 mph (15 degrees of flap)
Landing Speed: 46kt / 53mph (30 degrees of flap)
Stall Speed: 35-40kt (controlled descents are possible at 25kt / 30mph)
Typical SL Take-Off to 50 ft: 1600 ft
Minimum SL Take-Off Run: 560 ft
Typical SL Landing distance 50 ft: 1400 ft
Normal Range: 485nm / 900 km with 45 min. res
Max Range: 550nm / 6 hours endurance
Max SL Rate of Climb: 680 fpm
Time to 14,425 ft: 30 min
Service ceiling: 16404 ft / 5000 m
Ceiling: 14,425 ft with 1,100 lb cargo
Cross wind component: 8 kt with full flaps
Max wind speed for taxy: 20 kt
Cargo compartment: 13.5 ft long x 5 ft wide x 5.9 ft high
Cargo compartment capacity: 398.25 cu.ft
Cargo door opening: 4.5 ft wide x 5 ft high
Crew: 2 + 16

 

an-2
 
 Ant-An2-08
 
 Ant-An2-09
 
 Ant-An2-10
 
 Ant-An2-11
 
 Ant-An2-12
 
 Ant-An2-13
 
 Ant-An2-14
 
 Ant-An2-27
 
 Ant-An2-15
 
 Ant-An2-16

 

 



 


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