Yakovlev Yak-18
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The Yakovlev Yak-18 (NATO reporting name Max) was a tandem two-seat military primary trainer aircraft. Originally powered by one 160 hp Shvetsov M-11FR-1 radial piston engine, it entered service in 1946.
A member of the second generation of Russian aircraft designers, and best known for fighter designs, Alexander S. Yakovlev always retained a light aircraft design section. In May 1945, Yakovlev initiated design of the Yak-18 two-seat primary trainer. He designed it to replace the earlier Yakovlev UT-2 and Yak-5 in service with the Soviet Air Forces and DOSAAF (Voluntary Society for Collaboration with the Army, Air Force and Navy, which sponsored aero clubs throughout the USSR). The new aircraft flew a year later, powered by a Shvetsov M-11 five-cylinder radial engine and featuring a retractable tailwheel landing gear. The design proved exceptionally easy to build and maintain, and it continues in production today, 55 years later, in two of its many variants, the four-seat Yak-18T and two-seat Yak-54. The Yak-18 became the standard trainer for Air Forces flying schools and DOSAAF, is in wide use in China, and many other nations have used it.
[edit] Variants
- Yak-18 - The original production version.
- Yak-18A - Re-engined version, powered by a 194-kW (260-hp) Ivchenko AI-14 FR engine. Built in large numbers.
- Yak-18U - This version was built in small numbers, but it had retractable tricycle landing gear.
- Yak-18P (NATO reporting name: Mouse) - Single-seat aerobatic aircraft for use by flying clubs. Adaptation of Yak-18 two-seat trainer.
- Yak-18PM - Aerobatic aircraft.
- Yak-18PS - Aerobatic aircraft with retractable tailwheel.
- Yak-18T - Aeroflot training aircraft. The Yak-18T is also a light passenger transport aircraft, with a 4-seat cabin for one pilot and three passengers.
- Nanchang CJ-5 - The Yak-18 was built under licence in China as the CJ-5.
- Nanchang CJ-6 - Chinese version, which uses a Zhuzhou HS-6 radial piston engine.
- Nanchang Cj-6a - Chinese version, powered by a 285-hp (213-kW) Zhuzhou Huosai radial piston engine.
- Nanchang CJ-6B - Armed border patrol, observation aircraft.
- Nanchang BT-6 - Export designation of the CJ-6 and CJ-6a. The CJ-6 was sold to Albania, Bangladesh, Cambodia, North Korea, Sri Lanka, Tanzania, Zambia.
- Nanchang Haiyan (Petrel) - Civil agricultural aircraft. Used for topdressing and aerial spraying.
- Nanchang Haiyan A - Prototype.
- Nanchang Haiyan B - Civil fire-fighting, aricultural aircraft.
- Nanchang Haiyan C - Civil patrol and observation aircraft.
[edit] Operators
Afghanistan: 14 acquired from 1957 and retired by 2001.
Albania
Algeria
Bangladesh
Bulgaria
Cambodia
China
Czechoslovakia
East Germany
Egypt
Guinea
Hungary
Iraq
Laos
Mali
Mongolia
DPR Korea
Poland (replaced by the similar indigenous PZL TS-8 Bies)
Romania
Somalia
Soviet Union
Syria
Turkmenistan
Vietnam
Yemen
Zambia
[edit] Specifications (Yak-18A)
General characteristics
- Crew: two, student and instructor
- Length: 8.35 m (27 ft 5 in)
- Wingspan: 10.60 m (34 ft 9 in)
- Height: 3.35 m (11 ft 0 in)
- Wing area: 17.8 m² (191 ft²)
- Empty weight: 1,025 kg (2,255 lb)
- Loaded weight: kg (lb)
- Max takeoff weight: 1,320 kg (2,904 lb)
- Powerplant: 1× Ivchenko AI-14RF radial , 224 kW (300 hp)
Performance
- Maximum speed: 300 km/h (187 mph)
- Range: 700 km (436 miles)
- Service ceiling: 5,060 m (16,596 ft)
- Rate of climb: m/s (ft/min)
- Wing loading: kg/m² (lb/ft²)
- Power/mass: kW/kg (hp/lb)
[edit] External links
[edit] Related content
Related development
Comparable aircraft
Zlin Trener - LWD Junak - De Havilland Chipmunk
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The initial version of this article was based on material from aviation.ru. It has been released under the GFDL by the copyright holder.
Fighters: Yak-1 · Yak-3 · Yak-7 · Yak-9 · Yak-15 · Yak-17 · Yak-23 · Yak-25 (II) · Yak-28 · Yak-38
Bombers: Yak-2 · Yak-4 · Yak-28 - Reconnaissance: Yak-25 · Yak-27 · Pchela
Transports: Yak-6 · Yak-8 · Yak-10 · Yak-12 · Yak-14 · Yak-40 · Yak-42 · Yak-112 - Helicopters: Yak-24
Trainers: UT-1 · UT-2 · Yak-7 · Yak-11 · Yak-17 · Yak-18 · Yak-28 · Yak-30 (II) · Yak-32 · Yak-50 (II) · Yak-52 · Yak-54 · Yak-55 · Yak-130
Experimental: Yak-5 · Yak-13 · Yak-19 · Yak-25 (I) · Yak-26 · Yak-30 (I) · Yak-36 · Yak-41 · Yak-43 · Yak-44 · Yak-46 · Yak-50 (I)
