Yakovlev Yak-141
| Industry | Aerospace |
|---|---|
| Founded | 1934 |
| Headquarters | Moscow , Soviet Union |
| Products | Aircraft, including Yakovlev Yak-141 fighter jet |
Yakovlev Yak-141
The Yakovlev Yak-141 (Russian: Яковлев Як-141), identified by NATO as "Freestyle", and sometimes referred to as the Yak-41, was a Soviet-designed supersonic VTOL (vertical takeoff and landing) fighter aircraft developed by the Yakovlev design bureau. Conceived to succeed the Yak-38, this aircraft was intended to serve as a supersonic fleet defense fighter with STOVL/VTOL capabilities, optimized for deployment from Soviet naval carriers. The program produced four prototype units before being terminated.[1]Template:Page needed
Design and development
Internally designated as "Product 48," the Yak-41 was developed to succeed the Yak-38 within the Soviet Navy's fleet. Its design underwent considerable refinement throughout the development process. Yakovlev explored several configurations, including a twin-engine layout, which was ultimately dismissed due to concerns about asymmetric thrust if an engine failed during landing. Instead, a single-engine design complemented by lift jets for vertical takeoff and landing was chosen.[1]Template:Page needed
The propulsion system was managed through digital controls, while maneuvering during hover was facilitated by reaction control jets that utilized surplus airflow from the engines, positioned at the wingtips and beneath the nose.[1]Template:Page needed The cockpit was pressurized and equipped with an automatic ejection seat system, which activated automatically when the engine nozzle rotated beyond 30° at speeds under 300 kilometres per hour (160 kn; 190 mph). Prototype cockpits resembled those of the Yak-38M; however, production models were intended to feature a fully redesigned digital avionics suite incorporating a helmet-mounted sight.[1]Template:Page needed The aircraft employed tricycle-type landing gear, with the nose wheel retracting rearward and the main wheels folding forward.[1]Template:Page needed
The high-mounted wings were designed to fold for efficient storage aboard aircraft carriers. The main engine powering the aircraft was a Tumansky R-79V-300, supported by two Rybinsk (RKBM) RD-41 lift jets angled at 85°, located in the forward fuselage behind the cockpit.[1]Template:Page needed
A total of four prototypes were constructed: one static test model, one non-flying testbed, and two flight-capable prototypes intended for airborne evaluation.[1]Template:Page needed
Operational history
The Yak-41's maiden flight occurred on 9 March 1987 at Zhukovsky. The first hovering flight followed on 29 December 1989, with the initial complete transition from vertical takeoff to horizontal flight achieved on 13 June 1990. Flight trials on a simulated aircraft carrier deck at Saky commenced in April 1991. The testing outcomes were deemed favorable, highlighting the aircraft's exceptional combat maneuverability.[1]Template:Page needed During its flight testing phase, twelve world records were established; since the designation Yak-41 remained classified, these records were officially attributed to the "Yak-141".[1]Template:Page needed
On 26 September 1991, the first landings on the Russian aircraft carrier Admiral Gorshkov took place using the second prototype—the first flying model—with another prototype landing approximately an hour later. Between then and 5 October, eight flights were completed from the carrier before a hard landing caused a fuel tank rupture, resulting in a fire and pilot ejection. The damaged aircraft was subsequently repaired for exhibition purposes.[1]Template:Page needed Funding shortages led to program suspension later that October.[1]Template:Page needed
Following the dissolution of the Soviet Union, Lockheed Aircraft partnered with Yakovlev in 1991 to continue development of the aircraft, now officially designated as Yak-141. This collaboration was publicly acknowledged by Yakovlev on 6 September 1992 and confirmed by Lockheed in June 1994.[1]Template:Page needed The surviving prototype was showcased at the Farnborough Airshow in 1992.[1]Template:Page needed Plans for this joint effort included building three more prototypes plus an additional static test airframe—one of which would be a two-seat trainer—with all variants designed to handle increased gross weights,[1]Template:Page needed but no further aircraft were ultimately produced.
Variants
- Yak-41
- This includes the pair of flying prototypes along with the ground test model.
- Yak-41M
- A planned production version featuring enlarged leading-edge root extensions (LERXs) and various enhancements, notably in the avionics systems.
- Yak-43 (Izdeliye 201)
- A conceptual advancement of the Yak-41M 'Freehand', designed to incorporate Kuznetsov NK-321 powerplants.
- Yak-141
- The designation initially assigned to a single Yak-41 for purposes of disinformation and propaganda during record registrations with the FAI (Fédération Aéronautique Internationale)[2]: 120–121 [3] and subsequently used by Yakovlev for promotional activities.[4]
Operators
Surviving aircraft
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- Yak-41M (serial number 48-2, call sign "75") is exhibited at the Central Air Force Museum located in Monino. It is presented with its 1992 olive and grey camouflage paint scheme.
- Yak-41M (serial number 48-3, call sign "77") is housed at the Yakovlev OKB Museum. This aircraft is shown in its 1992 olive/grey camouflage with "141" painted in white replacing the original call sign.[1]
Specifications (Yak-141)
See also
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References
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External links
- Detailed walkaround of Yak-41 at Monino Museum (Russia)
- Yak-141 Archived 26 December 2014 at the Wayback Machine hosted on AeroFlight
- Template:Usurped
Template:Yakovlev aircraft Template:USAF/DoD reporting names
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- Abandoned military aircraft projects of the Soviet Union
- Carrier-based aircraft
- 1980s Soviet fighter aircraft
- Twin-boom aircraft
- Yakovlev aircraft
- Lift jet
- Aircraft with auxiliary jet engines
- Single-engined jet aircraft
- High-wing aircraft
- Aircraft first flown in 1987
- Fourth-generation jet fighters
- Aircraft with retractable tricycle landing gear