The Yakovlev Yak-11 (russian: Яковлев Як-11;
NATO reporting name
NATO reporting names are code names for military equipment from Russia, China, and historically, the Eastern Bloc (Soviet Union and other nations of the Warsaw Pact). They provide unambiguous and easily understood English words in a uniform manne ...
: "Moose") is a
trainer aircraft
A trainer is a class of aircraft designed specifically to facilitate flight training of pilots and aircrews. The use of a dedicated trainer aircraft with additional safety features—such as tandem flight controls, forgiving flight characteristi ...
used by the
Soviet Air Force
The Soviet Air Forces ( rus, Военно-воздушные силы, r=Voyenno-vozdushnyye sily, VVS; literally "Military Air Forces") were one of the air forces of the Soviet Union. The other was the Soviet Air Defence Forces. The Air Forces ...
and other Soviet-influenced air forces from
1947
It was the first year of the Cold War, which would last until 1991, ending with the dissolution of the Soviet Union.
Events
January
* January–February – Winter of 1946–47 in the United Kingdom: The worst snowfall in the country in ...
until
1962.
Design and development
The
Yakovlev design bureau
The JSC A.S. Yakovlev Design Bureau (russian: ОАО Опытно-конструкторское бюро им. А.С. Яковлева) is a Russian aircraft designer and manufacturer (design office prefix Yak). Its head office is in Aeroport D ...
began work on an advanced trainer based on the
Yak-3
The Yakovlev Yak-3 (Russian: Яковлев Як-3) was a single-engine, single-seat World War II Soviet fighter. Robust and easy to maintain, it was much liked by both pilots and ground crew.Glancey 2006, p. 180. One of the smallest and light ...
fighter in mid-1944, although the trainer was of low priority owing to the ongoing
Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
.
[Gunston 1995, p. 469.] The first prototype of the new trainer, designated Yak-UTI or Yak-3UTI flew in late 1945. It was based on the
radial
Radial is a geometric term of location which may refer to:
Mathematics and Direction
* Vector (geometric), a line
* Radius, adjective form of
* Radial distance, a directional coordinate in a polar coordinate system
* Radial set
* A bearing f ...
-powered Yak-3U, but with the new
Shvetsov ASh-21
The Shvetsov ASh-21 is a seven-cylinder single-row air-cooled radial aero engine.
Design and development
The ASh-21 is basically a single-row version of the Shvetsov ASh-82. The ASh-21 also incorporates a number of parts from the ASh-62 rad ...
seven-cylinder radial replacing the
ASh-82
The Shvetsov ASh-82 (M-82) is a Soviet 14-cylinder, two-row, air-cooled radial aircraft engine developed from the Shvetsov M-62. The M-62 was the result of development of the M-25, which was a licensed version of the Wright R-1820 Cyclone.
De ...
of the Yak-3U.
[Gordon Komissarov and Komissarov 2005, p. 249.] It used the same all-metal wings as the Yak-3U, with a fuselage of mixed metal and wood construction. The pilot and observer sat in tandem under a long canopy with separate sliding hoods. A single
synchronised UBS
UBS Group AG is a multinational Investment banking, investment bank and financial services company founded and based in Switzerland. Co-headquartered in the cities of Zürich and Basel, it maintains a presence in all major financial centres ...
12.7 mm machine gun and wing racks for two 100 kg (220 lb) bombs comprised the aircraft's armament.
[Gunston and Gordon 1997, p. 97.]
![LET C-11 ‘1706’ (33733903654)](https://upload.wikimedia.org/wikipedia/commons/1/1a/LET_C-11_%E2%80%981706%E2%80%99_%2833733903654%29.jpg)
An improved prototype flew in 1946, with revised cockpits and a modified engine installation with the engine mounted on shock absorbing mounts.
This aircraft passed state testing in October 1946, with production beginning at factories in
Saratov
Saratov (, ; rus, Сара́тов, a=Ru-Saratov.ogg, p=sɐˈratəf) is the largest city and administrative center of Saratov Oblast, Russia, and a major port on the Volga River upstream (north) of Volgograd. Saratov had a population of 901,36 ...
and
Leningrad
Saint Petersburg ( rus, links=no, Санкт-Петербург, a=Ru-Sankt Peterburg Leningrad Petrograd Piter.ogg, r=Sankt-Peterburg, p=ˈsankt pʲɪtʲɪrˈburk), formerly known as Petrograd (1914–1924) and later Leningrad (1924–1991), i ...
in 1947.
[Gunston and Gordon 1997, p. 99.]
Production Yak-11s were heavier than the prototypes, with later batches fitted with non-retractable tailwheels and revised propellers. A 7.62 mm
ShKAS machine gun
The ShKAS (Shpitalny-Komaritski Aviatsionny Skorostrelny, Shpitalny-Komaritski rapid fire for aircraft; Russian: ШКАС - Шпитального-Комарицкого Авиационный Скорострельный) is a 7.62 mm calibre ...
was sometimes fitted instead of the UBS, while some were fitted with rear-view periscopes above the windscreen.
Soviet production totalled 3,859 aircraft between 1947 and 1955. with a further 707 licence-built by
Let
Let or LET may refer to:
Sports
* Let serve, when the served object in certain racket sports hits the net and lands in the correct service court, such as;
** Let (badminton)
** Let (pickleball)
** Let (tennis)
* Ladies European Tour, the ladi ...
in
Czechoslovakia
, rue, Чеськословеньско, , yi, טשעכאסלאוואקיי,
, common_name = Czechoslovakia
, life_span = 1918–19391945–1992
, p1 = Austria-Hungary
, image_p1 ...
as the C-11.
[Gordon Komissarov and Komissarov 2005, pp. 250–251.]
Yak-11U
In 1951, Yakovlev revised the design of the Yak-11, adding a retractable
tricycle landing gear
Tricycle gear is a type of aircraft undercarriage, or ''landing gear'', arranged in a tricycle fashion. The tricycle arrangement has a single nose wheel in the front, and two or more main wheels slightly aft of the center of gravity. Tricycle g ...
, with two variants proposed, the Yak-11U basic trainer and Yak-11T proficiency trainer, which carried similar equipment to contemporary jet fighters. The new aircraft had reduced fuel capacity and was unsuitable for operations on rough or snow-covered runways, and so was rejected for Soviet service, although a few examples were built in Czechoslovakia as the C-11U.
[Gordon Komissarov and Komissarov 2005, p. 251.]
Operational history
![Yak 11 Egyptian 1964](https://upload.wikimedia.org/wikipedia/commons/e/ed/Yak_11_Egyptian_1964.jpg)
The Yak-11 entered service in 1947, serving as a standard advanced trainer with the
Soviet Air Forces
The Soviet Air Forces ( rus, Военно-воздушные силы, r=Voyenno-vozdushnyye sily, VVS; literally "Military Air Forces") were one of the air forces of the Soviet Union. The other was the Soviet Air Defence Forces. The Air Forces ...
and
DOSAAF
DOSAAF (russian: ДОСААФ), full name ''Volunteer Society for Cooperation with the Army, Aviation, and Navy'' (russian: Добровольное общество содействия армии, авиации и флоту), was a parami ...
.
[Gordon Komissarov and Komissarov 2005, p. 250.] Both the Yak-11 and C-11 were used in all
Warsaw Pact
The Warsaw Pact (WP) or Treaty of Warsaw, formally the Treaty of Friendship, Cooperation and Mutual Assistance, was a collective defense treaty signed in Warsaw, Poland, between the Soviet Union and seven other Eastern Bloc socialist republic ...
countries and were exported to eighteen countries, including many African,
Middle East
The Middle East ( ar, الشرق الأوسط, ISO 233: ) is a geopolitical region commonly encompassing Arabian Peninsula, Arabia (including the Arabian Peninsula and Bahrain), Anatolia, Asia Minor (Asian part of Turkey except Hatay Pro ...
ern and Asian countries.
North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and shares borders with China and Russia to the north, at the Yalu River, Y ...
n Yak-11s were used in combat in the
Korean War
, date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...
, with one Yak-11 being the first North Korean aircraft shot down by US forces when it was destroyed by a
North American F-82 Twin Mustang
The North American F-82 Twin Mustang is the last American piston-engined fighter ordered into production by the United States Air Force. Based on the North American P-51 Mustang, the F-82 was originally designed as a long-range escort fighter ...
over
Kimpo Airfield
Gimpo International Airport (), commonly known as Gimpo Airport , formerly rendered in English as Kimpo International Airport, is located in the far western end of Seoul, some west of the Central District of Seoul. Gimpo was the main interna ...
on 27 June 1950.
[Thompson 2001, pp. 160–161.] East Germany
East Germany, officially the German Democratic Republic (GDR; german: Deutsche Demokratische Republik, , DDR, ), was a country that existed from its creation on 7 October 1949 until its dissolution on 3 October 1990. In these years the state ...
used the Yak-11 to intercept American
reconnaissance balloons.
Surviving aircraft
![86 Yak 11 N5934 Czech Mate 2014 gold heat photo D Ramey Logan](https://upload.wikimedia.org/wikipedia/commons/d/d9/86_Yak_11_N5943_Czech_Mate_2014_gold_heat_photo_D_Ramey_Logan.jpg)
Due to its Yak-3 lineage, the Yak-11 has recently seen widespread popularity among
warbird
A warbird is any vintage military aircraft now operated by civilian organizations and individuals, or in some instances, by historic arms of military forces, such as the Battle of Britain Memorial Flight, the RAAF Museum Historic Flight, or the ...
enthusiasts. Highly modified versions of the Yak-11 are often seen at
air race
Air racing is a type of motorsport that involves airplanes or other types of aircraft that compete over a fixed course, with the winner either returning the shortest time, the one to complete it with the most points, or to come closest to a prev ...
s. About 120 Yak-11s remain airworthy.
Operators
![Jak 11 D-FYAK](https://upload.wikimedia.org/wikipedia/commons/7/77/Jak_11_D-FYAK.jpg)
;
*
Royal Afghan Air Force received 14 aircraft from 1958. None remain in service since 1999.
;
*
Albanian Air Force
The Albanian Air Force ( sq, Forca Ajrore e Republikës së Shqipërisë - Air Force of the Republic of Albania) is the air force of Albania and one of the branches of the Albanian Armed Forces.
History
Early history
In 1914 the governmen ...
received four aircraft.
;
*
Algerian Air Force
The Algerian Air Force (AAF) ( ar, القُوَّاتُ الجَوِّيَّةُ الجَزَائِرِيَّةُ, links=, lit=, translit=al-Quwwāt al-Ǧawwiyyah al-Ǧazāʾiriyyah, french: Forces aériennes algériennes, links=, lit=, translit ...
;
*
National Air Force of Angola
The National Air Force of Angola or FANA ( pt, Força Aérea Nacional de Angola) is the air branch of the Armed Forces of Angola.
With an inventory of more than 300 aircraft, FANA is (on paper) one of the largest and strongest air forces of A ...
;
*
Austrian Air Force
The Austrian Air Force (german: Österreichische Luftstreitkräfte, , Austrian Air Combat Force) is a component part of the Austrian Armed Forces.
History
The Austrian Air Force in its current form was created in May 1955 by the victorious Al ...
;
*
Bulgarian Air Force
The Bulgarian Air Force ( bg, Военновъздушни сили, Voennovazdushni sili) is one of the three branches of the Military of Bulgaria, the other two being the Bulgarian Navy and Bulgarian land forces. Its mission is to guard and p ...
;
*
People's Liberation Army Air Force
The People's Liberation Army Air Force (PLAAF; ), also known as the Chinese Air Force (中国空军) or the People's Air Force (人民空军), is an aerial service branch of the People's Liberation Army, the regular armed forces of the Peo ...
;
*
Czechoslovak Air Force
The Czechoslovak Air Force (''Československé letectvo'') or the Czechoslovak Army Air Force (''Československé vojenské letectvo'') was the air force branch of the Czechoslovak Army formed in October 1918. The armed forces of Czechoslovakia ce ...
;
*
East German Air Force
The Air Forces of the National People's Army (german: Luftstreitkräfte der Nationalen Volksarmee; LSK) was the Air Force of East Germany. As with the , the , and the Border Troops, it was a military branch of the National People's Army (NVA).
...
;
*
Egyptian Air Force
The Egyptian Air Force (EAF) ( ar, القوات الجوية المصرية, El Qūwāt El Gawīyä El Maṣrīya), is the aviation branch of the Egyptian Armed Forces that is responsible for all airborne defence missions and operates all milit ...
;
*
Iraqi Air Force
The Iraqi Air Force (IQAF or IrAF) ( ar, القوات الجوية العراقية, Al Quwwat al Jawwiyah al Iraqiyyah}) is the aerial warfare service branch of the Iraqi Armed Forces. It is responsible for the defense of Iraqi airspace as well ...
;
*
Hungarian Air Force
The Hungarian Air Force ( hu, Magyar Légierő), is the air force branch of the Hungarian Defence Forces.
The task of the current Hungarian Air Force is primarily defensive purposes. The flying units of the air force are organised into a single ...
;
*
Mongolian People's Air Force
The Mongolian Air Force ( mn, Монгол Улсын Зэвсэгт Хүчний Агаарын цэрэг) is the aerial warfare service branch of the Mongolian Armed Forces.
History
Early years and WWII
On 25 May 1925, a Junkers F.13 pilot ...
;
*
North Korean Air Force
The Korean People's Army Air and Anti-Air Force (KPAAF; ; Hanja: 朝鮮人民軍 航空 및 反航空軍 ) is the unified military aviation force of North Korea. It is the second largest branch of the Korean People's Army comprising an estimated ...
;
*
Polish Air Force
The Polish Air Force ( pl, Siły Powietrzne, , Air Forces) is the aerial warfare branch of the Polish Armed Forces. Until July 2004 it was officially known as ''Wojska Lotnicze i Obrony Powietrznej'' (). In 2014 it consisted of roughly 16,425 mil ...
used 101 Soviet Yak-11s and 37 Czech-built C-11s
;
*
Romanian Air Force
The Romanian Air Force (RoAF) ( ro, Forțele Aeriene Române) is the air force branch of the Romanian Armed Forces. It has an air force headquarters, an operational command, five airbases and an air defense brigade. Reserve forces include one ai ...
90
;
*
Somali Air Corps – Retired
;
*
Soviet Air Force
The Soviet Air Forces ( rus, Военно-воздушные силы, r=Voyenno-vozdushnyye sily, VVS; literally "Military Air Forces") were one of the air forces of the Soviet Union. The other was the Soviet Air Defence Forces. The Air Forces ...
*
DOSAAF
DOSAAF (russian: ДОСААФ), full name ''Volunteer Society for Cooperation with the Army, Aviation, and Navy'' (russian: Добровольное общество содействия армии, авиации и флоту), was a parami ...
;
*
Syrian Air Force
)
, mascot =
, anniversaries = 16 October
, equipment =
, equipment_label =
, battles = * 1948 Arab-Israeli War
* Six-Day War
* Yom Kippur War
...
;
*
Vietnam People's Air Force
The Vietnam People's Air Force (VPAF, ), formally refers itself as the Air Defence - Air Force (ADAF, ) or the Vietnamese Air Force (VNAF, ), is the Air force, aerial warfare service branch of Vietnam. It is the successor of the former North V ...
;
*
Yemen Air Force
The Yemeni Air Force ( ar, القوات الجوية اليمنية, al-Quwwat al-Jawwiya al-Yamaniya) is the air operations branch of the Yemeni Armed Forces. Numbers of aircraft can not be confirmed but serviceability of these aircraft is low. ...
Specifications (Yak-11)
See also
Notes
Citations
References
*
* Gordon, Yefim, Dmitry Komissarov and Sergey Komissarov. ''OKB Yakovlev: A History of the Design Bureau and its Aircraft''. Hinkley, UK: Midland Publishing, 2005. .
*
Gunston, Bill. ''The Osprey Encyclopedia of Russian Aircraft 1975–1995''. London, UK: Osprey, 1995. .
* Gunston, Bill and Yefim Gordon. ''Yakovlev Aircraft since 1924''. London, UK: Putnam Aeronautical Books, 1997. .
* Thompson, Warren. "Twin Mustang in Korea". ''International Air Power Review''. Volume 3, Winter 2001/2002. Norwalk, Connecticut, USA:AIRtime Publishing. . . pp. 156–167.
{{Czech trainer aircraft
Yak-011
Low-wing aircraft
1940s Soviet military trainer aircraft
Aerobatic aircraft
Single-engined tractor aircraft
Aircraft first flown in 1945