Yakovlev Yak-142

$4 million narrow-body jet airliner

Elbrus Avia Yakovlev Yak 42D
photo: Dmitry

The Yak-142 is one of the variants of the Yakovlev Yak-42 three-engined mid-range narrow-body jet airliner introduced in December 1980. The Yak-142 features updated avionics and spoilers to enable faster descent, as well as a large cabin door to fit a jet bridge. The version was also designated as Yak-42A, Yak-42-100, and Yak-42D-100.

Manufacturer:
Yakovlev
Country:
Russia
Manufactured:
1980 to: 2003
ICAO:
YK42
Price:
US$4 million (1980)

Specifications

Avionics:
AlliedSignal avionics
Engine:
3x Lotarev D-36
Turbofan
Power:
14,330 pound-force
Max Cruise Speed:
440 knots
815 Km/h
Approach Speed (Vref):
130 knots
Travel range:
2,200 Nautical Miles
4,074 Kilometers
Fuel Economy:
Service Ceiling:
32,000 feet
Rate of Climb:
2500 feet / minute
12.70metre / second
Take Off Distance:
1800 metre - 5,905.44 feet
Landing Distance:
1100 metre - 3,608.88 feet
Max Take Off Weight:
57,500 Kg
126,765 lbs
Max Landing Weight:
51,000 Kg
112,435 lbs
Max Payload:
18,000 Kg
39,683 lbs
Fuel Tank Capacity:
4,887 gallon
18,499 litre
Baggage Volume:
Seats - Economy / General:
120 seats
Seats - Business Class:
Seats - First Class:
Cabin Height:
2.08 metre - 6.82 feet
Cabin Width:
3.8 metre - 12.47 feet
Cabin Length:
19.9 metre - 65.29 feet
Exterior Length:
36.38 metre - 119.36 feet
Tail height:
9.83 metre - 32.25 feet
Fuselage Diameter:
3.9 metre - 12.80 feet
Wing Span / Rotor Diameter:
34.88 metre - 114.43 feet
Wing Tips:
No Winglets
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Description

In 1972, the Russian manufacturer Yakovlev began to develop a short to medium range airliner that could carry one hundred to one hundred and twenty passengers. The said aircraft was meant to replace the current airliners of the time such as the Tupolev Tu-134, Ilyushin II-18, Antonov An-24 and An-26.

Preliminary proposed designs comprised of an aircraft with straight wings and fitted with two Soloviev D-30 turbofan engines. It took after the Yak-40, however, the design was not approved because it was viewed as not inclined to compete in comparison to other Western airliners with high-bypass ratio turbofan engines. The design bureau opted to build a three-engine aircraft fitted with Lotarev D-36 three-shaft high-bypass ratio turbofans, and as well as swept wings instead of straight ones. On April 28, 1978, the initial production aircraft was completed and on December 22, 1980, it performed its first passenger flight with Aeroflot. The aircraft was not produced in large quantities at first, with at most ten took to the air by mid-1981.

The Yak-42 is of all-metal construction and has a pressurized fuselage section. It has an external length of 36.38 meters, an external height of 5.5 meters, and the circular fuselage has a diameter of 3.9 meters. The cockpit has a tandem seating for two pilots. The aircraft is also built with airstairs located on the lower side of the rear fuselage and onward the cabin. It has a wingspan of 34.88 meters and a wing area of 150 square meters. The tail height is 9.83 meters and the wheelbase is 16 meters.

The manufacturing company built several variants for the Yak-42. The Yak-142 is a derivative of the long-range variant Yak-42D. It features a modernized, Western avionics systems from AlliedSignal, as well as spoilers to intentionally reduce the lift component in a controlled way. The Yak-142 is also fitted with a large cabin door for the jet bridge.

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