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Yakolev Yak-18

Development of the Yakolev Yak-18 by Aleksandr Sergei Yakolev started during the Second World War. During the closing stages of the War, the Yak-18 tandem two-seat primary trainer appeared, entering service with Soviet training elements in 1946. Since the Yak-18 has been progressively developed and has remained in continuous production for over forty years.

Yak-18-2
Yakovlev 18

The initial Yak-18 tandem two-seat version was powered by the 160 hp M-11 engine in a “helmeted” cowling and tailwheel landing gear.

The Yak-18U featured a tricycle landing gear (the main units which retracted forward) and a lengthened front fuselage.

The Yak-18A was a development of the Yak-18U with a 260 hp AI-14R (later 300 hp AI-14RF) engine, NACA-type cowling, enlarged canopy, and dorsal fin extension.

The Yak-18P single seat development of the -18A was built in two versions. One with the cockpit aft of the wing and forward retracting main wheels. The other with the cockpit over the wing and inward retracting main wheels. There was a fuel system for 5 minutes of inverted flight and longer span ailerons.

The Yak-18PM single seat aerobatic version was produced for the 1966 World Aerobatic Championships was powered by an AI-14RF engine and featured reduced dihedral, and the cockpit further aft than the -18P.

Yak-18PM

The Yak-18PS was similar to the -18PM but with tailwheel landing gear.

Evolved from Yak-18, the Yak-18T has an extensively redesigned cabin, a new fuselage centre section, and a new wing centre section and an increased wing span. The aircraft was designed by the Yakolev Design Bureauas as a multi-role light transport aircraft. The Yak-18T was noticed first in 1967 and over 200 aircraft were built. Production initially ceased in 1989, but was resumed by the Smolensk Aircraft Factory in 1993. While primarily used for training Aeroflot pilots, the Yak-18T was widely used for more generalised flight training, air ambulance and light transport. The Yak-18T is equipped with a 269kW / 300 hp Ivchenko Vedeneyev AI-14RF nine cylinder, air-cooled engine. The 400 hp Vedeneyev M-14P 9-cylinder air-cooled radial engine can also be fitted.

Yak-18T

NATO code name ‘ Max’, both the -18PM and -18PC had 300-hp Ivchenko AI14RF engines. The Yakolev Yak-18T is aerobatic-capable, with an inward retractable tricycle landing gear.

Gallery

Yak-18

Engine: M-11FR, 160 hp / 118kW

Max take-off weight: 1112 kg / 2452 lb

Empty weight: 810 kg / 1786 lb

Wingspan: 10.6 m / 35 ft 9 in

Length: 8.0 m / 26 ft 3 in

Height: 2.2 m / 7 ft 3 in

Wing area: 17.0 sq.m / 182.99 sq ft

Max. speed: 248 km/h / 154 mph

Ceiling: 4000 m / 13100 ft

Range: 1015 km / 631 miles

Crew: 2

Yak-18U

Seats: 2

Yak-18A

Engine: 260 hp AI-14R

Seats: 2

Yak-18A

Engine: 300 hp AI-14RF

Seats: 2

Yak-18P

Seats: 1

Yak-18PM

Engine: Ivchenko AI-14RF, 300 hp

Wingspan: 34 ft 9.25 in / 10.60 m

Length: 27 ft 4.75 in / 8.35 m

MTOW: 2425 lb / 1100 kg

Max level speed: 173 kt / 199 mph / 320 kph

ROC SL: 970 fpm / 600 m/min

Range max fuel: 217 nm / 250 mi / 400 km

Seats: 1

Yak-18T

Engine: 300 hp AI-14RF

Seats: 4

Yak-18T

Engine: 400 hp Vedeneyev M-14P

Seats: 4

Yakolev Yak-18

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