Yakovlev Yak-50 (1975)

Yak-50

Role	Trainer/aerobatic aircraft
Manufacturer	Yakovlev
First flight	25 June 1975
Produced	1975-1986
Number built	314
Developed from	Yakovlev Yak-18
Variants	Yakovlev Yak-52

One of the survivors

VH-DZY's cockpit

The Yakovlev Yak-50 (Russian: Яковлев Як-50) aerobatic aircraft is a single-seat all-metal low-wing monoplane with retractable main wheels and exposed tail wheel. The control surfaces are fabric-covered to save weight. The aircraft is not equipped with flaps.

The supercharged engine may be the Vedeneyev M14P (standard production line version), M14PF or M14R, producing between 360 and 450 hp and driving the propeller via a reduction gearbox. The landing gear, brakes and engine starter are operated by compressed air. Replenished by an engine-driven compressor, the main and emergency air bottles are contained within the forward fuselage between the firewall and fuel tanks.

The Yak-50 had exceptionally fine handling characteristics enhanced by a relatively high power-to-weight ratio. It has a tough and agile airframe - the type was twice World Aerobatic Champion. It was used as a military trainer by several countries.

Aircraft serving with the Soviet National Aerobatic team were typically scrapped after about 50 flight hours, due to the intense stresses imposed on the airframe during unlimited aerobatics. There were numerous cases of main spar failure; among its victims were the 1976 World Aerobatic Champion Viktor Letsko and many others.

Two modifications (Service Bulletin 61DA for S/N 0102-2007 and Service Bulletin 79 for S/N 1201-2806) were made to strengthen the wings spars for the extreme loads experienced during unlimited aerobatics; and no further failures occurred.

Other aircraft serving with DOSAAF were "officially" scrapped or placed into storage after they were superseded by the Yak-55 and Su-26.

It is these aircraft that form the bulk of airworthy "survivors" today.^[1] Only a few (approx. 90+) are airworthy and remain in private hands in Europe, the USA and Australia.

Operators

Lithuania

Lithuanian National Defence Volunteer Forces - Ex DOSAAF aircraft

Russia

DOSAAF Russia

Ukraine

DOSAAF Ukraine

Soviet Union

DOSAAF

Specifications

Data from Yak-50 Flight Manual & Technical Description handbook

General characteristics

Crew: one, pilot
Length: 7.8 m (25 ft 7 in)
Wingspan: 9.5 m (31 ft 2 in)
Height: 3.2 m (10 ft 6 in)
Wing area: 15.0 m² (161.5 sq ft)
Airfoil: Clark YH
Empty weight: 750 kg (1653 lb)
Max. takeoff weight: 910 kg (2006 lb)
Powerplant: 1 × Vedeneyev M-14P, M-14PF or M-14R 9-cylinder air-cooled radial engine, 269/298/336 kW (360/400/450 hp)

Performance

Never exceed speed: 450 km/h V_NE (243 knots, 280 mph)
Maximum speed: 400 km/h V_A (216 knots, 249 mph)
Cruise speed: 270 km/h V_NO (146 knots, 168 mph)
Stall speed: 100 km/h (54 knots, 62 mph)
Range: 500 km (270 nmi, 308 mi)
Service ceiling: 4,000 m (13,123 ft)
Rate of climb: 11.3 m/s @ max T/O weight, 16.0 m/s @ max T/O power (2,224 ft/min @ max T/O weight, 3,145 ft/min @ max T/O power)
Wing loading: 60.7 kg/m² (12.43 lb/(sq ft))
Power/mass: 0.295 kW/kg (0.179 hp/lb)
G-loads: +9; -6 G dependent on tankage and smoke oil installation
Take-off roll: 100 m (328 ft)
Landing roll: 250 m (820 ft)
Take-off speed: 130 km/h (81 mph, 70 kn)
Landing speed: 110 km/h (68 mph, 59 kn)

References

Wikimedia Commons has media related to Yakovlev Yak-50.

↑ "Yak-50s The Survivors". p. 1. Retrieved 2009-05-09.

Yakovlev aircraft

Early aircraft	AIR-1 AIR-2 AIR-3 AIR-4 AIR-5 AIR-6 AIR-7 AIR-8 AIR-9 AIR-10 AIR-11 AIR-12 AIR-14 AIR-15 AIR-16 AIR-17 AIR-18 Ya-19 Ya-20 Ya-21 Ya-22

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

Transports	Yak-6 Yak-10 Yak-12 Yak-14 Yak-18T Yak-40 Yak-42 Yak-58 Yak-112 Yak-242

Reconnaissance	Yak-25 Yak-27 Pchela

Helicopter	Yak-24 Yak-100

Trainers	UT-1 UT-2 Yak-7 Yak-11 Yak-17 Yak-18 Yak-21 Yak-28 Yak-30 (II) Yak-32 Yak-50 (II) Yak-52 Yak-53 Yak-54 Yak-55 Yak-130 Yak-152 Yak-200 Yak-210

Experimental	EG Yak-5 Yak-8 Yak-13 Yak-16 Yak-19 Yak-25 (I) Yak-26 Yak-30 (I) Yak-36 Yak-41 Yak-43 Yak-44 Yak-46 Yak-50 (I) Yak-60 Yak-140 Yak-1000

Aerobatics

Aircraft	List of aerobatic aircraft

Competitions	European Gliding Championships FAI European Aerobatic Championships FAI World Aerobatic Championships FAI World Grand Prix Red Bull Air Race World Championship World Gliding Championships

Maneuvers	Loop (Inside & Outside) Aileron roll Barrel roll Cuban Eight Falling leaf Hesitation roll Immelmann turn Kulbit Lomcevak Pugachev's Cobra Slip Spin Split S Stall Turn/Hammerhead Tailslide The Scissors Whifferdill turn Zurabatic Cartwheel

Organizations	British Aerobatic Association Fédération Aéronautique Internationale (Aresti Catalog) International Aerobatic Club International Miniature Aerobatic Club

Pilots	Cecilia R. Aragon Hannes Arch Princess Basmah Bani Ahmad Lincoln J. Beachey Péter Besenyei Ladislav Bezák Marta Bohn-Meyer Paul Bonhomme Pip Borrman Kirby Chambliss Julie Clark Marion Cole Vicki Cruse Mario de Bernardi Glen Dell Matthias Dolderer Wilhelm Düerkop Walter Extra Markus Feyerabend Gerhard Fieseler Jozef Gabris Michael Goulian Matt Hall Wayne Handley Ray Hanna Charlie Hillard Bob Hoover Bevo Howard Petr Jirmus Steve Jones Jurgis Kairys Georgij Kaminski Svetlana Kapanina Sándor Katona Charlie Kulp Anatoly Kvochur Nigel Lamb Jim LeRoy François Le Vot Leo Loudenslager Nancy Lynn Alejandro Maclean Pete McLeod Jerzy Makula Stanisław Makula Mikhail Mamistov Mike Mangold Scott Manning Catherine Maunoury Neil Williams Pyotr Nesterov Alexandr Panfierov Ivy May Pearce Adolphe Pégoud František Peřina Tom Poberezny Maciej Pospieszyński Sergey Rakhmanin Amelia Reid Olaf Schmidt Art Scholl Klaus Schrodt Betty Skelton Erde Skip Stewart Martin Šonka Gene Soucy Chris Sperou Victor Tchmal Reinhold Tiling Ferenc Tóth Sean D. Tucker Nick Turvey Ernst Udet Gabor Varga Juan Velarde Frank Versteegh Patty Wagstaff Kermit Weeks Walter Wolfrum Janusz Żurakowski

Other	3D Radio control Virtual Festival of Aerobatic Teams

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