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AN-70
Tactical military transport aircraft |
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The
An-70 is a four-engine medium-range military transport aircraft designed
and manufactured by the Ukrainian aviation Company Antonov. The AN-70
aircraft belongs to a new generation of the short takeoff and landing
tactical military medium transports. AN-70 is extremely required by
army. This aircraft is capable of solving qualitatively new tasks beyond
possibilities of previous military transports. It was proved by the
wide programme of the Joint State Russian Ukrainian tests, main part
of which had been completed. AN-70 can transport almost any item of
aeromobile military and engineering vehicles used by armies of the world
and to deliver them to poorly-equipped unpaved runways directly to the
destination. On this ability, AN-70 surpasses all the existent airplanes.
The development of An-70 began in the 1990s and the first prototype
was rolled out in January 1994. Antonov launched the second prototype
in December 1996 and its maiden flight took place in April 1997. The
prototype was showcased at the Moscow Air Show in August 1997. On 24
June 2010 Lt. Gen. Vladimir Shamanov stated that he had ordered 60 An-70s
for his service in accordance with the new rearmament program for 2011–2020.
Then, it was reported in early March 2011 that Russia planned to receive
60 aircraft of a redesigned version in the 2015–2016 timeframe.
The first aircraft sold to the Russian Air Force. The Ukrainian Air
Force ordered five An-70 aircraft in November 2005. The fuselage of
the first serial production aircraft was completed in December 2012.
Deliveries are expected to begin in 2013. |
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| Design | ||||||||||||||||||||||
The
An-70 is a high-wing monoplane with four wing-mounted propfan engines,
it has a full glass cockpit and fly-by-wire controls. The aircraft has
a 19.1 metre (22.4 metre with the ramp) x 4 metre x 4.1 metre cargo
space and can carry 47 ton of cargo. The airframe is constructed with
composite materials to reduce the overall weight of the aircraft by
20% to 30%. Onboard aerial delivery system ensures autonomous loading/unloading
of a wide variety of cargoes and their air dropping. The onboard loading
equipment comprises four overhead rail electric motor hoists with total
cargo lifting capacity of 12 t, two onboard electric winches each with
a 1.5-ton tractive force. |
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| Avionics | ||||||||||||||||||||||
The
AN-70 is fitted with modern electronic equipment and systems of fully
digital control. The AN-70 is competitive enough as for the airframe
and power pant characteristics as well as airborne system. The first
production AN-70s constructed at ANTONOV Serial Plant will have modern
configuration of electronic equipment. Onboard monitoring and diagnostic
systems make possible the autonomous operation of the AN-70 aircraft
from poorly equipped airfields without the need for any special ground
facilities. Aircraft maintenance is based on the “on-condition”
strategy. The integrated digital complex of onboard equipment provides
operation of the aircraft in all latitudes, all and around-the-clock,
in VFR and adverse weather conditions, flights over unmarked terrain,
protection against antiaircraft means, formation flying, takeoff and
landing on unequipped unpaved airfields. Use of equipment with multiplex
channels of data exchange makes it possible to easily modify and adapt
the onboard avionics structure to suit any version. |
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| Propulsion | ||||||||||||||||||||||
The AN-70 is powered by four Progress D-27 propfan engines, each turning
a pair of contra-rotating scimitar propellers. Each engine can produce
10,350kW of output power. FADEC compatible, the D-27 engine is fitted
with two remote gearboxes, a single stage compressor, a four stage low
pressure turbine and a jetpipe. |
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AN-70
can perform the typical transport mission (transportation of 20 t payload
at a range of 3000 km) from unpaved airfield of 600-800 m length only.
There is no other airplane with such ability. Taking into account all
likely possibilities it is possible to come to conclusion that the AN-70
STOL capabilities as much as twice reduce both the number of aircraft
required for the mission and the cost of the operation. According to
the design estimations, AN-70 can be operated from/to elevated airfields
placed at altitudes up to 3000 m over sea level. In comparison with
the analogues aircraft, the AN-70 can perform air dropping of cargoes
and parachutists with twice less scatter and its crew can guide the
aircraft to the calculated touchdown point with a pin-point accuracy. |
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