×
Aircraft / Aviation Vehicles & Artillery Small Arms Warships & Submarines Military Ranks Military Pay Chart (2024) Special Forces
HOME
AVIATION INDEX
MODERN AIR FORCES
AIRCRAFT BY COUNTRY
AIRCRAFT MANUFACTURERS
COMPARE AIRCRAFT
AIRCRAFT BY CONFLICT
AIRCRAFT BY TYPE
AIRCRAFT BY DECADE
4TH GENERATION AIRCRAFT
COLD WAR AIRCRAFT
X-PLANE AIRCRAFT
Aviation / Aerospace

Yakovlev Yak-41 (Freestyle / Yak-141)


Prototype VTOL Fleet Defense Fighter Aircraft [ 1987 ]



The Yakovlev Yak-41 Freestyle was a promising VTOL naval fighter derailed by Soviet events of the late 1980s and early 1990s.



Authored By: Staff Writer | Last Edited: 02/21/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

VIEW SPECIFICATIONS [+]
Vertical Take-Off and Landing (VTOL) flight of fixed-wing fighter aircraft eluded aeronautical engineers for decades until several of the many initiatives of the 1960s ultimately yielded viable forms. The most famous of these became the British "Harrier" which was produced in two distinct marks - a land-based attack form and the "Sea Harrier" navalized form, the latter seeing combat service during the Falkland War of 1982. For the Soviet Union, the concept only ever truly materialized in the Yakovlev Yak-38 "Forger" which served the Soviet Navy from 1976 to 1991. 231 of the type were produced but these aircraft were limited in their ordnance-carrying capabilities and overall performance - as such not an outright success. Other programs, such as the Yak-36 "Freehand" of 1963 (the program yielding four prototypes), helped to further the Soviet goal of VTOL fighter flight.

In 1975, Yakovlev OKB was directly given the task of broadening the capabilities of its Yak-36 design with a formal government contract. The product was envisioned to become a fleet defense fighter for the Soviet Navy with inherent supersonic capabilities to keep pace with fighters of the West. This meant that the aircraft would have to display fighter-like qualities such as agility, sound weapons integration, and performance for the ranged interception role needed against incoming aerial threats. The new VTOL fighter program was born under the "Product 48" name and came to be known by the Soviet Navy as "Yak-41".

Design studies began to weed out incompatible engine arrangements and configurations. The chief challenge lay in providing supersonic performance while maintaining a vectored thrust capability and this led engineers to adopt a single-engine layout for both safety and simplicity. The thrust vectoring would come from a nozzle set at amidships in the fuselage (aided by smaller "thrust jets" installed at the forward section of the airframe) and general forward thrust/lifting through a jetpipe at the rear of the aircraft. The rear jetpipe was designed to turn down to 90 degrees to further support the VTOL action at the rear of the aircraft - an arrangement now seen in the American Lockheed F-35 "Lightning II" 5th Generation strike fighter.

With this single engine layout in mind, engineers developed the airframe to include twin tailbooms straddling either side of the engine installation. The remainder of the aircraft mimicked the design lines seen in previous Soviet high-speed aircraft of the period - namely the Mikoyan-Gurevich MiG-25 "Foxbat" and MiG-31 "Foxhound" with their slab-sided forward fuselages, large and rectangular intake openings (located to either side of the cockpit), and small-area wings clipped at their ends and showcasing sweep along their leading edges. The wing mainplanes were designed with a folding feature to aid in carrier storage and the reinforced wheeled tricycle undercarriage was retractable. Titanium was used to protect those surfaces expected to be exposed to the extreme temperatures of the list units while general areas were completed with composites where possible. The Yak-41 design ultimately utilized a three-engine layout. Its primary forward thrusting/lift unit was a Soyuz R-79V-300 turbofan engine outputting 24,300lbf on dry thrust and 34,170lbf with afterburner engaged. The lift engines comprised 2 x RKBM RD-41 turbojets delivering 9,300lbf of thrust apiece.©MilitaryFactory.com
As a combat aircraft, the production-quality Yak-41 (Yak-41M) was slated to carry a 30mm GSh-301 series internal cannon as standard for close-in work, the cannon was fed by a 120-round cassette. Five hardpoints were integrated (four underwing, one fuselage centerline) for the carrying of various Soviet air-to-air missiles - up to 5,735lb of external stores in multiple combinations to suit short-, medium-, and long-ranged targets.

Yakovlev OKB was cleared to constructed four total prototypes during development and this lead to four aircraft designations in sequential order: 48-0, 48-1, 48-2, and 48-3. 48-0 was reserved as a static testbed and 48-1 trialed the engines so it was left to 48-2 to complete the series' first flight on March 9th, 1987 when the aircraft completed a conventional take-off and landing. The first hovering attempt was successfully completed on December 29th, 1989 with prototype 48-3 followed by the first compound action (vertical take-off with forward flight) recorded on June 13th, 1990. The first vertical carrier-based landing took place on September 26th, 1991.

In practice, the Yak-41 exhibited strong qualities and pilots reported a responsive aircraft with excellent fighter-like performance. Indeed, the prototypes claimed several aviation records though, due to the top secret development of the design, the "Yak-141" designation was submitted to the record books instead. Once this designation became known to the West, NATO assigned the design the codename of "Freestyle". During October of 1991, one of the prototypes was extensively damaged by a fire brought about from a hard carrier deck landing. Though this airframe was reclaimed, its flying days were over as it served out the rest of its tenure as a display piece.

As built, the Yak-41 was an impressive aircraft for her time. Performance specifications included a maximum speed of over Mach 1.4 (approximately 1,120 miles per hour) with a ferry range out to 1,865 miles, a service range out to 1,300 miles, a service ceiling up to 50,855 feet, and a rate-of-climb of 49,215 feet per minute.

Also in October of 1991 the Soviet Navy announced that the Yak-41 program would not be furthered (this coming during the tumultuous days of the fall of the Soviet Empire, a period in which the Soviet military suffered greatly from budget cuts). The proposed Yak-41M, expected to be the production model, was therefore not brought along. This mark would have incorporated an improved avionics suite as well as Leading-Edge Root Extensions (LERXs) at the wings. An alternatively-engined mark - the Yak-43 - also fell to naught. This would have carried a Kuznetsov/Samara NK-321 series engine (from a Tupolev Tu-160 bomber) and RD-41 lift engines. Yak-41U was to become a two-seat trainer to help reveal the intricacies of VTOL flight to incoming Russian naval pilots.

American defense-industry powerhouse Lockheed involved itself with the Yak-41 program for a short time in the early 1990s, this as the company was working on selling the USAF with its own VTOL-minded fighter product, the X-35 (to become the F-35 "Lightning II"). Beyond a last showing of prototypes 48-2 and 48-3 in 1993, the Yak-41 product fell to history after only two aircraft made up the line (not counting the two static/test members) - it was never adopted for Russian Navy service.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.

Specifications



Yakovlev - Soviet Union
Manufacturer(s)
Russia; Soviet Union
Operators National flag of Russia National flag of the Soviet Union
1987
Service Year
Soviet Union
National Origin
Cancelled
Project Status
1
Crew
4
Units


AIR-TO-AIR COMBAT
General ability to actively engage other aircraft of similar form and function, typically through guns, missiles, and/or aerial rockets.
INTERCEPTION
Ability to intercept inbound aerial threats by way of high-performance, typically speed and rate-of-climb.
MARITIME / NAVY
Land-based or shipborne capability for operating over-water in various maritime-related roles while supported by allied naval surface elements.
X-PLANE
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


60.2 ft
(18.36 meters)
Length
33.2 ft
(10.11 meters)
Width/Span
16.4 ft
(5.00 meters)
Height
25,684 lb
(11,650 kilograms)
Empty Weight
42,990 lb
(19,500 kilograms)
Maximum Take-Off Weight
+17,306 lb
(+7,850 kg)
Weight Difference


1 x MNPK Soyuz/Kobchenko R-79V-300 vectored-thrust turbofan cruise engine developing 34,170lbf thrust with afterburning; 2 x Rybinski/Kuznetsov (RKBM) RD-41 turbojet lift engines of 9,300lbf thrust each.
Propulsion
1,118 mph
(1,800 kph | 972 knots)
Max Speed
50,853 ft
(15,500 m | 10 miles)
Ceiling
1,305 miles
(2,100 km | 1,134 nm)
Range
49,213 ft/min
(15,000 m/min)
Rate-of-Climb


MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


STANDARD:
1 x 30mm GSh-30-1 internal cannon

OPTIONAL:
4 x R-73 (AA-11) Archer short-range IR-guided air-to-air missiles.
4 x R-77 (AA-12) Adder radar-guided medium-range air-to-air missiles.
4 x R-27 (AA-10) Alamo radar-guided medium-range air-to-air missiles.
Kh-35 anti-ship missiles
Kh-31P anti-radar missiles
Kh-58 (AS-11) Kilter anti-radar missiles
Conventional Drop Bombs
Unguided Rockets (in launch pods)
1 x Fuel Tank on fuselage centerline

Up to 5,733lbs of external ordnance on four underwing pylons and a single centerline fuselage hardpoint. Vertical take-off max is 2,204lbs while Standard Take-Off max was 5,732lb.


5
Hardpoints


Yak-41 (Freestyle) - Base Series Designation
48-0 - Static airframe testbed
48-1 - Engine testbed
48-2 - Flyable prototype
48-3 - Flyable prototype; damaged by fire and reclaimed as static showpiece.
Yak-41M - Initial Project Designation and internal Soviet military designation; developmental model; single vectoring jet nozzle; directional afterburner exhaust.
Yak-41M - Proposed production model designation; to be finished with LERXs and improved avionics package.
Yak-41U - Abandoned Two-Seat Trainer Prototype; tandem-seat cockpit.
Yak-43 - Proposed version of the Yak-41M but fitting Kuznetsov/Samara NK-321 engines from Tupolev Tu-160 bomber with 2 x RD-41 lift engines instead; revised trapezoidal wings on lengthened fuselage; limited stealth characteristics; increased internal payload capacity and fuel load, the latter for improved range.
Yak-141 - Western designation applied to Yak-41


Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for Special Forces
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Ukranian-Russian War
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft

Images



1 / 1
Image of the Yakovlev Yak-41 (Freestyle / Yak-141)
Front left side view of the Yakovlev Yak-41/Yak-141 Freestyle jump jet

Disclaimer | Privacy Policy | Cookies

2024 Military Pay Chart Military Ranks DoD Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content; site is 100% curated by humans.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons. Special Interest: RailRoad Junction, the locomotive encyclopedia.


©2023 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2023 (20yrs)