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Yak-141 Yakovlev
Yak-141
ASCC codename: Freestyle
Multi-Role Fighter

DESCRIPTION:
Developed to replace the Yak-38 for Soviet aircraft carrier use, the Yak-41 (later redesignated Yak-141) was the world's first supersonic vertical/short-takeoff and landing aircraft. The design utilized three engines, one for forward flight and two for lift, and a complex fly-by-wire flight-control system. After initial flight tests, the airframe was modified to extend the aircraft's flight envelope. This new design, the Yak-141M, was also intended primarily for land-basing. Though a very advanced and capable design, Yakovlev was frustrated by shrinking funding from the Russian government and was forced to seek international partners to continue development of the design. Yakovlev engineers were also consulted by Lockheed during design of its V/STOL version of the F-35.
Data below for Yak-141
Last modified 29 August 2010

HISTORY:

First Flight March 1989 [STOL]
29 December 1989 [VTOL]

Service Entry did not enter service

CREW: one: pilot

ESTIMATED COST:

unknown

AIRFOIL SECTIONS:

Wing Root unknown

Wing Tip unknown

DIMENSIONS:

Length 60.00 ft (18.30 m)

Wingspan 33.15 ft (10.10 m)

Height 16.42 ft (5.00 m)

Wing Area 341 ft² (31.7 m²)

Canard Area not applicable

WEIGHTS:

Empty 25,685 lb (11,650 kg)

Normal Takeoff unknown

Max Takeoff 42,990 lb (19,500 kg) [short takeoff]
34,835 lb (15,800 kg) [vertical takeoff]

Fuel Capacity internal: 9,700 lb (4,400 kg)
external: 3,860 lb (1,750 kg)

Max Payload 5,840 lb (2,650 kg) [short takeoff]
2,205 lb (1,000 kg) [vertical takeoff]

PROPULSION:

Powerplant one MNPK Soyuz R-79V-300 and two RKBM RD-41 turbofans

Thrust R-79V: 24,206 lb (107.67 kN)
34,171 lb (152.00 kN) with afterburner
RD-41: 9,392 lb (41.78 kN) ea.

PERFORMANCE:

Max Level Speed at altitude: 1,120 mph (1,800 km/h) at 36,090 ft (11,000 m), Mach 1.7
at sea level: 775 mph (1,240 km/h), Mach 1.02

Initial Climb Rate unknown

Service Ceiling 49,215 ft (15,000 m)

Range typical: 755 nm (1,400 km) with max payload
ferry: 1,133 nm (2,100 km)

g-Limits +7

ARMAMENT:

Gun one 30-mm GSh-301 cannon (120 rds)

Stations six external hardpoints

Air-to-Air Missile R-27/AA-10 Alamo, R-73/AA-11 Archer, R-77

Air-to-Surface Missile Kh-31/AS-17 Krypton, Kh-25/AS-12 Kegler

Bomb 500 kg bombs, free-fall, cluster bombs

Other 23 mm gun pods, rocket pods, ECM pods

KNOWN VARIANTS:

Yak-41 or Yak-141 Single-seat V/STOL fighter for shipborne use

Yak-141M Single-seat land-based V/STOL fighter with structural improvements for increased performance

KNOWN COMBAT RECORD: none

KNOWN OPERATORS: Russia, Aviatsiya Voyenno-Morskoyo Flota Sily Rossii (Russian Naval Aviation)

3-VIEW SCHEMATIC:

Yak-141

SOURCES:

Donald, David, ed. The Complete Encyclopedia of World Aircraft. NY: Barnes & Noble, 1997, p. 921.

Spohrer, Jennifer and Frase, Tuesday. Jane's Combat Simulations: ATF Gold Users Manual. San Mateo, CA: Electronic Arts, 1997, p. 8.44-8.46.

Winchester, Jim. Concept Aircraft: Prototypes, X-Planes and Experimental Aircraft. San Diego, CA: Thunder Bay Press, 2005, p. 252-253, Yakovlev Yak-141 'Freestyle'.

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	Yakovlev Yak-141 ASCC codename: Freestyle Multi-Role Fighter

DESCRIPTION: Developed to replace the Yak-38 for Soviet aircraft carrier use, the Yak-41 (later redesignated Yak-141) was the world's first supersonic vertical/short-takeoff and landing aircraft. The design utilized three engines, one for forward flight and two for lift, and a complex fly-by-wire flight-control system. After initial flight tests, the airframe was modified to extend the aircraft's flight envelope. This new design, the Yak-141M, was also intended primarily for land-basing. Though a very advanced and capable design, Yakovlev was frustrated by shrinking funding from the Russian government and was forced to seek international partners to continue development of the design. Yakovlev engineers were also consulted by Lockheed during design of its V/STOL version of the F-35. Data below for Yak-141 Last modified 29 August 2010
HISTORY:
First Flight	March 1989 [STOL] 29 December 1989 [VTOL]
Service Entry	did not enter service
CREW:	one: pilot
ESTIMATED COST:	unknown
AIRFOIL SECTIONS:
Wing Root	unknown
Wing Tip	unknown
DIMENSIONS:
Length	60.00 ft (18.30 m)
Wingspan	33.15 ft (10.10 m)
Height	16.42 ft (5.00 m)
Wing Area	341 ft² (31.7 m²)
Canard Area	not applicable
WEIGHTS:
Empty	25,685 lb (11,650 kg)
Normal Takeoff	unknown
Max Takeoff	42,990 lb (19,500 kg) [short takeoff] 34,835 lb (15,800 kg) [vertical takeoff]
Fuel Capacity	internal: 9,700 lb (4,400 kg) external: 3,860 lb (1,750 kg)
Max Payload	5,840 lb (2,650 kg) [short takeoff] 2,205 lb (1,000 kg) [vertical takeoff]
PROPULSION:
Powerplant	one MNPK Soyuz R-79V-300 and two RKBM RD-41 turbofans
Thrust	R-79V: 24,206 lb (107.67 kN) 34,171 lb (152.00 kN) with afterburner RD-41: 9,392 lb (41.78 kN) ea.
PERFORMANCE:
Max Level Speed	at altitude: 1,120 mph (1,800 km/h) at 36,090 ft (11,000 m), Mach 1.7 at sea level: 775 mph (1,240 km/h), Mach 1.02
Initial Climb Rate	unknown
Service Ceiling	49,215 ft (15,000 m)
Range	typical: 755 nm (1,400 km) with max payload ferry: 1,133 nm (2,100 km)
g-Limits	+7
ARMAMENT:
Gun	one 30-mm GSh-301 cannon (120 rds)
Stations	six external hardpoints
Air-to-Air Missile	R-27/AA-10 Alamo, R-73/AA-11 Archer, R-77
Air-to-Surface Missile	Kh-31/AS-17 Krypton, Kh-25/AS-12 Kegler
Bomb	500 kg bombs, free-fall, cluster bombs
Other	23 mm gun pods, rocket pods, ECM pods
KNOWN VARIANTS:
Yak-41 or Yak-141	Single-seat V/STOL fighter for shipborne use
Yak-141M	Single-seat land-based V/STOL fighter with structural improvements for increased performance
KNOWN COMBAT RECORD:	none
KNOWN OPERATORS:	Russia, Aviatsiya Voyenno-Morskoyo Flota Sily Rossii (Russian Naval Aviation)
3-VIEW SCHEMATIC:
SOURCES: Donald, David, ed. The Complete Encyclopedia of World Aircraft. NY: Barnes & Noble, 1997, p. 921. Spohrer, Jennifer and Frase, Tuesday. Jane's Combat Simulations: ATF Gold Users Manual. San Mateo, CA: Electronic Arts, 1997, p. 8.44-8.46. Winchester, Jim. Concept Aircraft: Prototypes, X-Planes and Experimental Aircraft. San Diego, CA: Thunder Bay Press, 2005, p. 252-253, Yakovlev Yak-141 'Freestyle'.