Aircraft / Aviation Vehicles & Artillery Small Arms Warships & Submarines Military Ranks Military Pay Chart (2024) Special Forces
Aviation / Aerospace

Lavochkin La-250 (Anaconda)

Long-Range, High-Altitude Interceptor Prototype [ 1956 ]

The Soviet-era La-250 Anaconda prototype interceptor became the last notable submission for Lavochkin - it failed to see formal adoption.

Authored By: Staff Writer | Last Edited: 10/28/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

The Lavochkin concern of the Soviet Union became perhaps best known for its contribution of fighters during World War 2 (1939-1945). In the post-war years, the company attempted to keep pace with others worldwide in pursuit of viable jet-powered designs. This development stood alongside the growth in missile technology which was seen by many as the long term replacement for onboard cannon. The line of Lavochkin aircraft came to an end with several developmental types with the last official entry becoming the Lavochkin La-250 interceptor.

Prior to the widespread acceptance of submarine-launched ballistic nuclear missiles the primary threat for both sides of the Cold War was the long-range, high-flying heavy bomber which, in some cases, could out-fly ground-based defenses and fast-responding interceptors. For the Soviets, whose empire spanned a great many kilometers from east-to-west and north-to-south, the threat was primarily strategic bombers emerging from the United States. As such, a 1954 Soviet requirement officially called for a long-range, high-altitude missile-armed interceptor (the "Interceptor 250") to counter the threat at hand. From this was formed the La-250 design which was to be paired with the "Vozdukh-1" ground control radar guidance system (the "Uragan", or "Hurricane", with 18.5 mile acquisition range) and an onboard missile fire control system manning the proposed liquid-fueled K-15 air-to-air missile (the model "275"). Two of these missiles would be carried by the aircraft.

At its core, the aircraft showcased smooth, well-contoured lines with all wings being swept for maximum aerodynamic efficiency. The nose cone section was intended for the powerful radar fit. The twin K-15 beam-riding air-to-air missiles were carried along the fuselage in semi-recessed positions. The mid-mounted wing mainplanes were swept-back elements and propulsion was through 2 x Klimov VK-9 turbojets. Each engine was aspirated by a semi-circle intake seated to either side of the cockpit walls. A sole vertical tail fin was featured on the empennage and a tricycle undercarriage would support the aircraft when on the ground. Seating in the cockpit was for one. One of the key engineering features of the aircraft was its complete power-assisted control surface scheme with built-in backup (non manual form).

As it stood, the interceptor was to be operationally fielded as a single-seat form but, for testing purposes, prototypes were completed with a second cockpit to help collect data and other pertinent information during design and trials. The La-250 was available in prototype form for 1956 to which a first flight was conducted on July 16th. Issues with the engines forced a switch to the lower-rated Lyulka AL-7F series (14,330 pounds thrust) and the temperamental K-15U series radar fit gave way to the K-15M model. This, in turn, forced a change to the lighter weight "275A" missile form.

After a rewrite of the design, the La-250A emerged and this model featured a delta-wing planform, doing away with the original's swept-wing appendages. The missiles were also relocated from their semi-recessed fuselage positions to underwing hardpoints. The second prototype emerged in June of 1956 but was lost in a landing accident on November 28th, 1957. The third prototype was also crippled by a landing accident, this occurring on September 8th, 1958. A fourth and fifth prototype followed.

These five aircraft were all that was realized in the La-250 program for continuous delays from accidents and unreliable equipment helped to ensure that the investment was abandoned by the Soviets (the missile program itself was abandoned in 1959). As designed, the aircraft held a maximum speed of 1,243 miles per hour, about Mach 1.88, a range out to 1,240 miles and a service ceiling up to 55,750 feet which would have given it strong performance against enemy bombers of the period.

During its development program, the La-250 garnered the nickname of "Anaconda" for its unique, slim shape.©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.


Lavochkin OKB - Soviet Union
Soviet Union (cancelled)
Operators National flag of the Soviet Union
Service Year
Soviet Union
National Origin
Project Status

Ability to intercept inbound aerial threats by way of high-performance, typically speed and rate-of-climb.
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.

87.9 ft
(26.80 meters)
45.9 ft
(14.00 meters)
21.3 ft
(6.50 meters)
41,888 lb
(19,000 kilograms)
Empty Weight
60,627 lb
(27,500 kilograms)
Maximum Take-Off Weight
+18,739 lb
(+8,500 kg)
Weight Difference

2 x Lyulka AL-7F turbojet engines developing 19,840 lb thrust with afterburner (14,330 lb dry).
1,243 mph
(2,000 kph | 1,080 knots)
Max Speed
55,774 ft
(17,000 m | 11 miles)
1,243 miles
(2,000 km | 1,080 nm)

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

2 x K-15 Model "275" long-range air-to-air missiles.


La-250 - Base Series Designation; five prototypes completed.
La-250A - Revised model with delta-wing planform.

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


1 / 1
Image of the Lavochkin La-250 (Anaconda)
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

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)