Yakovlev Yak-52

Yakovlev Yak-52
Jak-52TW
Type:	Training and aerobatic aircraft
Design country:	Soviet Union
Manufacturer:	Jakowlew and Aerostar SA, Bacau / Romania
First flight:	1976
Production time:	1979–1991, partly continued by Aerostar SA
Number of pieces:	~ 1800

Jak-52 (Classic Aviation Company)

Four Yak-52s at an air show

Jak-52 with ski undercarriage

The Jakowlew Jak-52 ( Russian Яковлев Як-52 ) is a former Soviet military training aircraft based on the Jakowlew Jak-50 .

history

The two-seat Jak-52 emerged from the single-seat aerobatic aircraft Jak-50 as a trainer for basic training. It was to be used as a replacement for the Jak-18A mainly at the DOSAAF , which estimated the demand for the next ten years at 1000 pieces. In contrast to its predecessor, the Jak-52, like the Jak-50, was an all-metal construction. Individual assemblies such as the tandem cockpit with hood and the three-point nose wheel were adopted from the Jak-18A, in contrast to the Jak-50 equipped with a tail wheel. After the development in the Soviet Union, a contract for license production was negotiated with Romania on July 15, 1976 . For this purpose , a manufacturing facility, initially named Fabrica de Avioane Usoare , was built in Bacau for series production. In the same year the technical documents were handed over to the Romanian side. The first prototype , which was still built and flown in the Soviet Union, was flown to Bacau in an An-12 , but was not tested there, but only used as a demonstration model. The construction of the Romanian prototype began in 1977. He received the work number 780102 and led its rollout by April 28 the following year. After a first ground inspection, the engine test runs began on May 9, 1978 and the first, non-official flight was carried out on May 20, 1978. The official acceptance flight was carried out by Yakovlev test pilot Dmitri Mitikov on July 22nd. The aircraft was then handed over to the Soviet Union and the first two series copies were produced by the end of the year. In 1978 the company was renamed Intrepinderea de Avioane Bacău (since 1991 Aerostar SA). In 1979 the actual series production began in Romania. On May 8, 1978, the new trainer aircraft was officially introduced at the DOSAAF. At the end of 1994, around 1800 copies were built. Aerostar SA stopped production in 2017.

Versions

• Jak-52 : Basic version as a trainer
• Jak-52M : modernized version of the Jak-52 with the Wedenejew-M-14Ch - radial engine , other propeller , additional fuel tanks and the Zvezda-SKS-94MYa ejection seat . Forerunner of the Yak-152 .
• IAK-52 : Name of the Jak-52 produced under license in Romania for the Romanian armed forces. 23 pieces were built.
• Jak-52W : Romanian export version of the Jak-52 for the USA and Western Europe with higher fuel capacity, night flight equipment, hydraulic brakes and a luggage compartment in the fuselage and tailwheel design. Jak-52TW stands for Tail Wheel .
• Jak-52TD : see Jak-52W, but in a tail wheel design. TD stands for Tail Dragger .
• Jak-52PSch : Study carried out by Jakowlew in the early 1980s on the conversion as a light ground attack aircraft for use in Afghanistan . For this purpose, at least two of these were equipped at Plant No. 3 in Moscow, each with two underwing external supports to accommodate either guided missiles or containers with unguided missiles. The instrument panel in the rear cabin was removed and replaced by a computer with a weapon control system.
• "Kondor" : Romanian version of the Jak-52 with Lycoming -AEIO-540-L1-B-5D engine and new cockpit equipment. Between 1991 and 1993 two Yak-52s were converted in this way and subjected to some ground tests, but the program was discontinued before the first flight.

Operator in German-speaking countries

The Flugsportverein Andelsbuch operates an airworthy Jakowlew Jak-52 at the Hohenems airfield in the Austrian state of Vorarlberg and offers sightseeing flights in the summer months.

Technical specifications

Three-sided tear

Parameter	Jak-52	Jak-52W	Jak-52TW	Jak-52TD
crew	2
length	7.74 m	7.75 m	9.98 m	7.70 m
span	9.30 m		9.90 m	9.30 m
height	2.70 m	2.40 m	2.70 m
Wing area	15.00 m²		15.42 m²	15.00 m²
Wing extension	5.8		6.4	5.8
Empty mass	1015 kg	960 kg	980 kg
Max. Takeoff mass	1305 kg	1315 kg	1320 kg	1415 kg
Engines	1 × M-14P with two-blade propeller W-530TA-D35 (ø 2.40 m)	1 × M-14P-ChDK with three-blade propeller MTV-9 (ø 2.50 m)		1 × M-14P or MF with propeller W-530TA-D35 (two-bladed, ø 2.40 m) or MTV-9 (three-bladed, ø 2.50 m)
power	268 kW (364 hp)	294 kW (400 hp)		268 kW (364 PS) or 294 kW (400 PS)
Fuel supply	122 l (88 kg)	280 l (202 kg)		180 l (120 kg) with additional tanks 270 l (195 kg)
Top speed	360 km / h		420 km / h	320 km / h
Cruising speed	240 km / h	285 km / h	300 km / h	270 km / h
Minimum speed	105 km / h	90 km / h with flaps	85 km / h with flaps	105 km / h
Rate of climb	7.0 m / s		k. A.	8.0 m / s
Range	550 km	1200 km		k. A.
Summit height	4000 m	k. A.		4000 m
Load factor	+ 7 / −5
Take-off run	170 m		140 m	300 m
Landing runway	300 m		270 m	260 m

See also

• List of aircraft types

literature

• Jaks in Germany . In: Detlef Billig (Ed.): Typenschau . No. 02 . TOM-Modellbau, Friedland 2005, p. 14-21 .

Web links

Commons : Jakowlew Jak-52  - Collection of images

• Jak-52 of the Classic Aviation Company
• Greg Goebel: Yakovlev Piston Trainers & Stunters. www.airvectors.net, July 20, 2020, accessed on August 13, 2020 . 

Individual evidence

1. ↑ Як-52 Фото. Видео. Арактеристики. Скорость. Вес. oruzhie.info, accessed April 4, 2020 (Russian). 
2. ↑ ^{a b c} IAR-823. www.iar823.com, accessed April 4, 2020 . 
3. ↑ Flugsportverein Andelsbuch
4. ↑ ^{a b c d} Jaks in Germany . In: Detlef Billig (Ed.): Typenschau . No. 02 . TOM-Modellbau, Friedland 2005, p. 4/5 .