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Antonov An-22
Antonov An-22 Антей (Antaeus) (NATO reporting name "Cock") was the world's largest aircraft, until the advent of American C-5 Galaxy and later the Soviet An-124. Powered by 4 contra-rotating turboprops, the design remains the world's largest turboprop-powered aircraft. It first appeared outside the Soviet Union at the 1965 Paris Air Show.

Design featuresEdit

The An-22 has the general appearance of an enlarged version of the earlier Antonov An-12 except that it is fitted with a twin tail. This gives the An-22 better engine-out performance, and reduces height restrictions for hangars. Also of note are large anti-flutter masses on the top of each tail.

Being designed as a strategic airlifter, it has the capability to takeoff from austere, unpaved and short airstrips. This is achieved by four pairs of contra-rotating propellers, similar to those on the Tupolev Tu-114. The engines generate significant thrust, and produce a slipstream over the wings and large double-slotted flaps. The landing gear is ruggedized for rough airstrips, and, in early versions, tire pressures could be adjusted in flight for optimum landing performance, although that feature was removed in later models.

The An-22 follows traditional cargo transport design with a high-mounted wing allowing a cavernous cargo space of 33m in length and a usable volume of 639m³. The forward fuselage is fully pressurized and provides space for 5 to 8 crew and up to 28 passengers, but the cargo space is pressurized to only 3.55 PSI / 0.245 bar allowing for a lighter airframe. A door equipped pressure bulkhead is located at frame 14, separating the cargo attendant's compartment from the main cargo compartment. This allows the rear cargo doors to be opened during flight for paratroops and equipment drop. Like the An-12, the aircraft has a circular fuselage section. The An-22 has set a number of payload and payload-to-height world recordsTemplate:Fact.

Only one production variant was built, the standard An-22. Prototypes, such as the one first featured at the 1965 Paris Air Show had fully-glazed noses that lacked the nose mounted radar of production models. Those aircraft had the radar mounted below the right wheel well fairing, forward of the wheels.

Operational HistoryEdit

The An-22 was originally built for the Soviet Air Force and Aeroflot, the state airline. One unit that operated it was the 566th 'Solnechnogorsk' Military Transport Aviation Regiment, which used the An-22 from 1970 to 1987. Approximately 45 remained in service by the mid-1990s, mostly with the Russian Air Force, but these are slowly being replaced by the bigger turbofan-powered Antonov An-124. The remaining An-22s appear to be operated by an independent military transport aviation squadron at Tver (Migalovo). Currently one An-22 is in use for civilian cargo duties with Antonov Airlines.

A proposed civil airliner version capable of seating 724 passengers on upper and lower decks was not built. (For comparison, a typical Boeing 747 can carry 400-500 passengers.)

As of 2004 there had been 8 accidents with a total of 83 fatalities.

The aircraft is also used in special operations.

VariantsEdit

An-22
Prototypes built at Kiev-Svyatoshino with glass nose, three built.
An-22
Initial production variant with external start system, 37 built at Tashkent.
An-22A
Improved variant with air-start capability, modified electrical system, and updated radio and navigation equipment, 28 built at Tashkent.

OperatorsEdit

MilitaryEdit

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CivilEdit

In August 2006 a single Antonov An-22 aircraft remains in airline service with Antonov Airlines.[1]

Operators included:

Template:BUL
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Specifications (An-22)Edit

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C-123 Provider

Transport Aircraft

The Fairchild C-123 Provider is a twin-engined military transport aircraft produced by the US American manufacturer Fairchild Aircraft, developed by Chase Aircraft.

Crew 4

Propulsion 2 Radial Engines Engine Model Pratt & Whitney R-2800-99W Double Wasp Engine Power (each) 1715 kW 2300 hp

Speed 367 km/h 198 kts

 228 mph 

Service Ceiling 8.839 m 29.000 ft Range 2.367 km 1.278 NM 1.471 mi.

Empty Weight 13.562 kg 30.000 lbs max. Takeoff Weight 27.216 kg 60.000 lbs

Wing Span 33,53 m 110,0 ft Wing Area 113,6 m² 1223 ft² Length 23,09 m 75,8 ft Height 10,39 m 34,1 ft

gatherd from http://www.flugzeuginfo.net/acdata_php/acdata_c123_en.php

See alsoEdit

Template:Aircontent

ReferencesEdit

  1. Flight International, 3-9 October 2006

External linksEdit

Template:Commons

Template:Antonov aircraft

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