Yakovlev Yak-42

The first Soviet airliner fitted with improved high-bypass turbofan engines

Overview

Yakovlev Russia ICAO: YK42 1979–2003 Active $36 million

The Yakovlev Yak-42 was designed by the Yakovlev design bureau as a narrow-body jet airliner. Introduced on December 22, 1980, it is a mid-range passenger jet powered by three engines and can accommodate one hundred to two hundred passengers. The Yak-42 was the first airliner built and produced in the Soviet Union fitted with improved high-bypass turbofan engines. It was produced from 1979 to 2003.

Live Fleet Activity (YK42)

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Specifications

Units
Engine
3 × ZMKB Progress D-36
Engine type
Turbofan
Thrust
3 × 14,300 lbf · 64 kN
Avionics
—
Wing tips
No winglets
Seats
120 economy · 96 business
Crew
—
Cabin width
12 ft 6 in  ·  3.80 m
Cabin height
6 ft 10 in  ·  2.08 m
Cabin length
65 ft 3 in  ·  19.89 m
Exterior length
119 ft 4 in  ·  36.38 m
Tail height
32 ft 3 in  ·  9.83 m
Fuselage diameter
12 ft 10 in  ·  3.90 m
Wing span
114 ft 5 in  ·  34.88 m
Baggage volume
—
Gross weight
—
Empty weight
—
Max takeoff weight
127,000 lb  ·  57,500 kg
Max landing weight
—
Max payload
29,800 lb  ·  13,500 kg
Fuel capacity
6,100 gal · 23,100 L · 18,500 kg (Jet A)
Max cruise speed
440 kt  ·  506 mph  ·  815 km/h
Maximum speed
—
Cruise speed
—
Approach speed
130 kt  ·  150 mph  ·  241 km/h
Range
2,200 nm  ·  2,530 mi  ·  4,070 km
Fuel burn
0.42 nm/gal  ·  0.21 km/L
Ceiling
31,500 ft  ·  9,600 m
Rate of climb
2,500 ft/min  ·  13 m/s
Takeoff distance
2,300 ft  ·  700 m
Landing distance
5,900 ft  ·  1,800 m
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‘RA-42422’ Elbrus Avia Yakovlev Yak-42D

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Operational Context

In 1972, the development of an airliner capable of flying on short to medium ranges while transporting one hundred to two hundred passengers was started by the Yakovlev design bureau. The aircraft was planned to take over the Tupolev Tu-134 narrow-body jet, and the Ilyushin Il-18, Antonov An-24, and An-26 turboprop airliners.

The Yak-42 features low wings with a wingspan of 34.88 meters and a wing area of 150 square meters. The pressurized circular fuselage has an external length of 36.38 meters, a height of 5.5 meters, and a diameter of 3.9 meters. The tail height is 9.83 meters and the wheelbase is 16 meters.

The aircraft can accommodate up to one hundred and twenty passengers in a six-abreast configuration or one hundred passengers with more space for carry-on baggage and coat storage. It has a cabin length of 19.89 meters, a cabin height of 2.08 meters, and a cabin length of 19.89 meters.

The cockpit is flown by two pilots seated side-by-side. It is also fitted with airstairs for easy access one is located under the rear fuselage and the other one is at the forward part of the cabin.

The aircraft is powered by three Lotarey D-36 three-shaft high-bypass ratio turbofan with a single-stage fan incorporating twenty-nine titanium blades and a Kevlar outer shell, and a three-stage turbine. The engine has a six-stage low-pressure compressor and a single-stage non-cooled low-pressure turbine, a seven-stage high-pressure compressor, and a steel blade high-pressure turbine. Each engine produces a maximum thrust of 14,330 lbf.

The Yak-42 has a maximum speed of 440 knots and a cruise speed of 400 knots. The travel range is 2,200 nautical miles. It can fly up to 31,500 feet and can climb at a rate of 2,500 feet per minute. The aircraft has a maximum takeoff weight of 57,500 kg, a maximum payload of 13,500 kg, an empty weight of 33,000 kg, and a fuel capacity of 6,115 US gallons.