Strategic bomber

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A contemporary U.S. Air Force strategic bomber, the Rockwell B-1 Lancer B-1B air refueling.jpg
A contemporary U.S. Air Force strategic bomber, the Rockwell B-1 Lancer

A strategic bomber is a medium- to long-range penetration bomber aircraft designed to drop large amounts of air-to-ground weaponry onto a distant target for the purposes of debilitating the enemy's capacity to wage war. Unlike tactical bombers, penetrators, fighter-bombers, and attack aircraft, which are used in air interdiction operations to attack enemy combatants and military equipment, strategic bombers are designed to fly into enemy territory to destroy strategic targets (e.g., infrastructure, logistics, military installations, factories, etc.). In addition to strategic bombing, strategic bombers can be used for tactical missions. There are currently only three countries that operate strategic bombers: the United States, Russia [1] and China.

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The modern strategic bomber role appeared after strategic bombing was widely employed, and atomic bombs were first used in combat during World War II. Nuclear strike missions (i.e., delivering nuclear-armed missiles or bombs) can potentially be carried out by most modern fighter-bombers and strike fighters, even at intercontinental range, with the use of aerial refueling, so any nation possessing this combination of equipment and techniques theoretically has such capability. Primary delivery aircraft for a modern strategic bombing mission need not always necessarily be a heavy bomber type, and any modern aircraft capable of nuclear strikes at long range is equally able to carry out tactical missions with conventional weapons. An example is France's Mirage IV, a small strategic bomber replaced in service by the ASMP-equipped Mirage 2000N fighter-bomber and Rafale multirole fighter.

History

First and Second World Wars

The Sikorsky Ilya Muromets was designed by Igor Sikorsky as the first ever airliner, but it was turned into a bomber by the Imperial Russian Air Force. Samolet "Il'ia Muromets".jpg
The Sikorsky Ilya Muromets was designed by Igor Sikorsky as the first ever airliner, but it was turned into a bomber by the Imperial Russian Air Force.

The first strategic bombing efforts took place during World War I (1914–18), by the Russians with their Sikorsky Ilya Muromets bomber (the first heavy four-engine aircraft), and by the Germans using Zeppelins or long-range multi-engine Gotha aircraft. Zeppelins reached England on bombing raids by 1916, forcing the British to create extensive defense systems including some of the first anti-aircraft guns which were often used with searchlights to highlight the enemy machines overhead. Late in the war, American fliers under the command of Brig. Gen. Billy Mitchell were developing multi-aircraft "mass" bombing missions behind German lines, although the Armistice ended full realization of what was being planned.

Study of strategic bombing continued in the interwar years. Many books and articles predicted a fearful prospect for any future war, paced by political fears such as those expressed by British Prime Minister Stanley Baldwin who told the House of Commons early in the 1930s that "the bomber will always get through" no matter what defensive systems were undertaken. It was widely believed by the late 1930s that strategic "terror" bombing of cities in any war would quickly result in devastating losses and might decide a conflict in a matter of days or weeks. But theory far exceeded what most air forces could actually put into the air. Germany focused on short-range tactical bombers. Britain's Royal Air Force began developing four-engine long-range bombers only in the late 1930s. The U.S. Army Air Corps (Army Air Forces as of mid-1941) was severely limited by small budgets in the late 1930s, and only barely saved the B-17 bomber that would soon be vital. The equally important B-24 first flew in 1939. Both aircraft would constitute the bulk of the bomber force for USAAF strategic bombing in Europe and Allied day bomber units more generally.

At the start of World War II, so-called "strategic" bombing was initially carried out by medium bomber aircraft which were typically twin-engined, armed with several defensive guns, but only possessed limited bomb-carrying capacity and range. Both Britain and the US were developing larger two- and four-engined designs, which began to replace or supplement the smaller aircraft by 1941–42. After American entry into the war in December 1941, the U.S. 8th Air Force began to develop a daylight bombing capacity using improved B-17 and B-24 four-engine aircraft. In order to assemble the formations to carry out these bombing campaigns, assembly ships were used to quickly form defensive combat boxes. The RAF concentrated its efforts on night bombing. But neither force was able to develop adequate bombsights or tactics to allow for often-bragged "pinpoint" accuracy. The post-war U.S. Strategic Bombing Survey studies supported the overall notion of strategic bombing, but underlined many of its shortcomings as well. Attempts to create pioneering examples of "smart bombs" resulted in the Azon ordnance, deployed in the European Theater and CBI Theater from B-24s.

The only operational strategic bomber with the Luftwaffe in World War II was the troubled Heinkel He 177. Heinkel He 177A-02 in flight 1942.jpg
The only operational strategic bomber with the Luftwaffe in World War II was the troubled Heinkel He 177.

Following the untimely death of the top German advocate for strategic bombing, General Walther Wever in early June 1936, the focus of Nazi Germany's Luftwaffe bomber forces, the so-named Kampfgeschwader (bomber wings) became the battlefield support of the German Army as part of the general Blitzkrieg form of warfare, carried out with both medium bombers such as the Heinkel He 111, and Schnellbombers such as the Junkers Ju 88A. Support for the Ural bomber project before the start of WW II dwindled after Wever's death, with the only aircraft design that could closely match the Allied bomber force's aircraft – the Heinkel He 177A, originated in early November 1937, deployed in its initial form in 1941–42, hampered by a RLM requirement for it to also perform medium-angle dive bombing, not rescinded until September 1942 – unable to perform either function properly, with a powerplant selection and particular powerplant installation design features on the 30-meter wingspan Greif, that led to endless problems with engine fires. The trans-Atlantic ranged Amerika Bomber program started in March 1942 sought to ameliorate the lack of a long-range bomber for the Luftwaffe, but led only to three Messerschmitt- and two Junkers-built prototypes ever flying, and no operational "heavy bombers" for strategic use for the Third Reich beyond the roughly one thousand He 177s built.

By the end of the Second World War in 1945, the "heavy" bomber, epitomized by the British Avro Lancaster and American Boeing B-29 Superfortress used in the Pacific Theater, showed what could be accomplished by area bombing of Japan's cities and the often small and dispersed factories within them. Under Major General Curtis LeMay, the U.S. 20th Air Force, based in the Mariana Islands, undertook low-level incendiary bombing missions, results of which were soon measured in the number of square miles destroyed. The air raids on Japan had withered the nation's ability to continue fighting, although the Japanese government delayed surrender until atomic bombs were dropped on Hiroshima and Nagasaki in August 1945.

The Cold War and its aftermath

During the Cold War, the United States and United Kingdom on one side and the Soviet Union on the other kept strategic bombers ready to take off on short notice as part of the deterrent strategy of mutually assured destruction (MAD). Most strategic bombers of the two superpowers were designed to deliver nuclear weapons. For a time, some squadrons of Boeing B-52 Stratofortress bombers were kept in the air around the clock, orbiting some distance away from their fail-safe points near the Soviet border.

The British produced three different "V bombers" for the Royal Air Force which were designed and designated to be able to deliver British-made nuclear bombs to targets in European Russia. These bombers would have been able to reach and destroy cities such as Kiev or Moscow before American strategic bombers. While they were never used against the Soviet Union or its allies, two V bomber types, the Avro Vulcan and the Handley Page Victor, were used in the Falklands War towards the end of their operational lives.

The Soviet Union produced hundreds of unlicensed copies of the American Boeing B-29 Superfortress, which the Soviet Air Forces called the Tupolev Tu-4. The Soviets later developed the jet-powered Tupolev Tu-16 "Badger".

The People's Republic of China produced a version of Tupolev Tu-16 on license from the Soviet Union in the 1960s, which they named the Xian H-6.

During the 1960s France produced its Dassault Mirage IV nuclear-armed bomber for the French Air Force as a part of its independent nuclear strike force, the Force de Frappe , using French-made bombers and IRBMs to deliver French-made nuclear weapons. Mirage IVs served until mid-1996 in the bomber role, and to 2005 as reconnaissance aircraft.

The French Republic limited its strategic armaments to a squadron of four nuclear-powered ballistic missile submarines, with 16 SLBM tubes apiece. France also maintains an active force of supersonic fighter-bombers carrying ASMP stand-off nuclear missiles, with Mach 3 speed and a range of 500 kilometers. These missiles can be delivered by the Dassault Mirage 2000N and Rafale fighter-bombers; the Rafale is also capable of refueling others in flight using a buddy refueling pod.

A USAF B-2 Spirit stealth bomber. A B-2 flies over Shreveport (cropped).jpg
A USAF B-2 Spirit stealth bomber.

Newer strategic bombers such as the Rockwell B-1 Lancer, the Tupolev Tu-160, and the Northrop Grumman B-2 Spirit designs incorporate various levels of stealth technology in an effort to avoid detection, especially by radar networks. Despite these advances earlier strategic bombers, for example the B-52 last manufactured in 1962 and the Tupolev Tu-95, remain in service and can also deploy the latest air-launched cruise missiles and other "stand-off" or precision guided weapons such as the JASSM and the JDAM.

The Russian Air Force's new Tu-160M2 strategic bombers are expected to be delivered on a regular basis over the course of 10 to 20 years[ when? ]. The Tu-95 and Tu-160 bombers will be periodically updated, as was done during the 1990s with the Tu-22M bombers.

Strategic bombers of the Cold War were primarily armed with nuclear weapons. During the post-1940s Indochina Wars, and also since the end of the Cold War, modern bombers originally intended for strategic use have been exclusively employed using non-nuclear, high explosive weapons. During the Vietnam War, Operation Menu, Operation Freedom Deal, Gulf War, military action in Afghanistan, and the 2003 invasion of Iraq, American B-52s and B-1s were mostly employed in tactical roles. During the Soviet-Afghan war in 1979–88, Soviet Air Forces Tu-22Ms carried out several mass air raids in various regions of Afghanistan.

Notable strategic bombers

Nomenclature

Bombers listed below were used in the main or represented a shift in long-range bomber design (Maximum bomb load). In practice, bomb loads carried are dependent on factors such as the distance to target and the individual type, size or weight of bombs used.

Nomenclature for size classification of aircraft types used in strategic bombing varies, particularly since the time of World War II due to sequential technological advancements and changes in aerial warfare strategy and tactics. The B-29, for example was a benchmark aircraft of the heavy bomber type at end of World War II due to its size, range and load carrying ability; as the Cold War began, it became an intercontinental range strategic bomber with the development of new techniques, such as aerial refueling (which also greatly extended the range of other medium- to long-range bombers, fighter-bombers and attack aircraft).

During the 1950s the U.S. Strategic Air Command also briefly brought back the outdated term "medium bomber" to distinguish its Boeing B-47 Stratojets from somewhat larger contemporary Boeing B-52 Stratofortress "heavy bombers" in bombardment wings; older B-29 and B-50 heavy bombers were also redesignated as "medium" during this period. [2] [3] [4] SAC's nomenclature here was purely semantic and bureaucratic, however as both the B-47 and B-52 strategic bombers were much larger and had far greater performance and load-carrying ability than any of the World War II-era heavy or medium bombers.

Other aircraft such as the twin-jet US FB-111, Douglas A-3 Skywarrior and France's Dassault Mirage IV had nominal warloads of less than 20,000 lb (9,100 kg), and were significantly smaller in size and gross weight compared with their strategic bomber contemporaries, based on which they might be classified as medium bombers . In the nuclear strike role, France would replace its Mirage IVs beginning in the late 1980s with the even smaller, single-engine Mirage 2000N fighter-bomber, a further example of advancing technologies and changing tactics in military aviation and aircraft design. France's newer twin-engine Dassault Rafale multirole fighter also has nuclear strike capability.

World War I

The Boeing B-17 Flying Fortress B17 - Chino Airshow 2014 (framed).jpg
The Boeing B-17 Flying Fortress

Interwar/World War II

Cold War

Weapons loads can include nuclear-armed missiles as well as aerial bombs

RAF Avro Vulcan XH558 (G-VLCN) Avro Vulcan - Last Flight over Farnborough (cropped).jpg
RAF Avro Vulcan
A USAF Boeing B-52 Stratofortress B-52H Stratofortress bombers fly over the Pacific Ocean.jpg
A USAF Boeing B-52 Stratofortress

Post Cold War

Future

See also

Related Research Articles

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A bomber is a military combat aircraft that utilizes air-to-ground weaponry to drop bombs, launch torpedoes, or deploy air-launched cruise missiles. Bombs were first dropped from an aircraft during the Italo-Turkish War, with the first major deployments coming in the First World War and Second World War by all major airforces, damaging cities, towns, and rural areas. The first bomber planes in history were the Italian Caproni Ca 30 and British Bristol T.B.8, both of 1913. Some bombers were decorated with nose art or victory markings.

<span class="mw-page-title-main">Boeing B-29 Superfortress</span> US heavy bomber aircraft, 1942

The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 Flying Fortress, the Superfortress was designed for high-altitude strategic bombing, but also excelled in low-altitude night incendiary bombing, and in dropping naval mines to blockade Japan. B-29s dropped the atomic bombs on Hiroshima and Nagasaki, the only aircraft ever to drop nuclear weapons in combat.

<span class="mw-page-title-main">Tupolev Tu-16</span> Soviet heavy bomber

The Tupolev Tu-16 is a twin-engined jet strategic heavy bomber used by the Soviet Union. It has been flown for almost 70 years, Soviets retired many of them after the Cold War ended, however, the Chinese license-built version Xian H-6 remains in service with the People's Liberation Army Air Force, with more being built as of 2020.

<span class="mw-page-title-main">Heavy bomber</span> Bomber aircraft of the largest size and load carrying capacity

Heavy bombers are bomber aircraft capable of delivering the largest payload of air-to-ground weaponry and longest range of their era. Archetypal heavy bombers have therefore usually been among the largest and most powerful military aircraft at any point in time. In the second half of the 20th century, heavy bombers were largely superseded by strategic bombers, which were often even larger in size, had much longer ranges and were capable of delivering nuclear bombs.

<span class="mw-page-title-main">Medium bomber</span> Aircraft class designed to attack ground targets with medium-size bomb loads over medium distances

A medium bomber is a military bomber aircraft designed to operate with medium-sized bombloads over medium range distances; the name serves to distinguish this type from larger heavy bombers and smaller light bombers. Mediums generally carried about two tons of bombs, compared to light bombers that carried one ton, and heavies that carried four or more.

<span class="mw-page-title-main">Tupolev Tu-4</span> Soviet strategic bomber aircraft, copy of B-29

The Tupolev Tu-4 is a piston-engined Soviet strategic bomber that served the Soviet Air Force from the late 1940s to mid-1960s. The aircraft was a copy of the American Boeing B-29 Superfortress, having been reverse-engineered from seized aircraft that had made emergency landings in the USSR.

<span class="mw-page-title-main">Tupolev Tu-85</span> Prototype strategic bomber aircraft based on Tu-4

The Tupolev Tu-85 was a Soviet prototype strategic bomber based on the Tu-4, an unlicensed, reverse engineered copy of the Boeing B-29 Superfortress. It was the ultimate development of the B-29 family, being over 50% heavier than its progenitor and had nearly double the range. Only two prototypes were built before the program was cancelled in favor of the turboprop powered Tupolev Tu-95 bomber which could cover the same range at a far higher speed.

<span class="mw-page-title-main">Tupolev Tu-80</span> Prototype for a longer-ranged version of the Tu-4 bomber

The Tupolev Tu-80 was a Soviet prototype for a longer-ranged version of the Tupolev Tu-4 bomber, an unlicensed, reverse engineered copy of the Boeing B-29 Superfortress. It was cancelled in 1949 in favor of the Tupolev Tu-85 program which offered even more range. The sole prototype was used in various test programs before finally being used as a target.

The Tupolev Tu-75 was a military transport variant of the Tu-4 bomber, an unlicensed, reverse engineered copy of the Boeing B-29 Superfortress. The Tu-75 was similar to the Tu-70 airliner, both using a new, purpose-designed fuselage. The first Soviet military machine of this class, it was equipped with a rear fuselage loading ramp. It was not placed into production because the VVS decided it would be cheaper to modify its existing Tu-4s for the transport mission and to use its existing Lisunov Li-2 and Ilyushin Il-12 transports.

The Tupolev Tu-70 was a Soviet passenger variant of the Tu-4 bomber, an unlicensed, reverse engineered copy of the Boeing B-29 Superfortress. Designed immediately after the end of World War II, it used a number of components from Boeing B-29s that had made emergency landings in the Soviet Union after bombing Japan. It had the first pressurized fuselage in the Soviet Union and first flew on 27 November 1946. The aircraft was successfully tested, recommended for serial production, but ultimately not produced because of more pressing military orders and because Aeroflot had no requirement for such an aircraft. A military cargo aircraft version was the Tupolev Tu-75.

<span class="mw-page-title-main">Tupolev Tu-22</span> Soviet supersonic heavy bomber

The Tupolev Tu-22 was the first supersonic bomber to enter production in the Soviet Union. Manufactured by Tupolev, the Tu-22 entered service with Long-Range Aviation and Soviet Naval Aviation in the 1960s.

<span class="mw-page-title-main">Boeing B-50 Superfortress</span> Piston-engined strategic bomber aircraft family, 1947

The Boeing B-50 Superfortress is an American strategic bomber. A post–World War II revision of the Boeing B-29 Superfortress, it was fitted with more powerful Pratt & Whitney R-4360 radial engines, stronger structure, a taller tail fin, and other improvements. It was the last piston-engined bomber built by Boeing for the United States Air Force, and was further refined into Boeing's final such design, the prototype B-54. Although not as well known as its direct predecessor, the B-50 was in USAF service for nearly 20 years.

<span class="mw-page-title-main">Myasishchev M-4</span> Soviet strategic bomber and tanker aircraft

The Myasishchev M-4 Molot was a four-engined strategic bomber designed by Vladimir Mikhailovich Myasishchev and manufactured by the Soviet Union in the 1950s to provide a Long Range Aviation bomber capable of attacking targets in North America.

<span class="mw-page-title-main">Dassault Mirage IV</span> French supersonic strategic bomber

The Dassault Mirage IV was a French supersonic strategic bomber and deep-reconnaissance aircraft. Developed by Dassault Aviation, the aircraft entered service with the French Air Force in October 1964. For many years it was a vital part of the nuclear triad of the Force de Frappe, France's nuclear deterrent striking force. The Mirage IV was retired from the nuclear strike role in 1996, and the type was entirely retired from operational service in 2005.

<span class="mw-page-title-main">Tupolev Tu-95</span> Russian strategic bomber aircraft

The Tupolev Tu-95 is a large, four-engine turboprop-powered strategic bomber and missile platform. First flown in 1952, the Tu-95 entered service with the Long-Range Aviation of the Soviet Air Forces in 1956 and was first used in combat in 2015. It is expected to serve the Russian Aerospace Forces until at least 2040.

<span class="mw-page-title-main">Boeing B-29 Superfortress variants</span> US heavy bomber aircraft with 4 piston engines, 1942

The Boeing B-29 Superfortress is a WWII era long range, strategic heavy bomber that was produced in many experimental and production models.

<span class="mw-page-title-main">Tail gunner</span> Flight crew responsible for operating defensive armament located at the tail of the aircraft

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<span class="mw-page-title-main">Supersonic aircraft</span> Aircraft that travels faster than the speed of sound

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<span class="mw-page-title-main">Boeing B-54</span> Bomber aircraft project by Boeing

The Boeing B-54 was an American strategic bomber designed by Boeing for use by the United States Air Force. Derived from the YB-50C Superfortress, construction of the prototype was canceled before completion, and the aircraft was never flown.

<span class="mw-page-title-main">Xi'an H-6</span> Chinese strategic bomber aircraft

The Xi'an H-6 is a twin-engine jet bomber of the Chinese People's Liberation Army Air Force (PLAAF). The H-6 is a license-built version of the Soviet Tupolev Tu-16 and remains the primary bomber aircraft of the People's Republic of China.

References

  1. Paul, T. V.; Wirtz, James J.; Fortmann, Michael. Balance of power: theory and practice in the 21st century, Stanford University Press, 2004, p. 332. ISBN   0-8047-5017-3
  2. "Factsheets : Boeing RB-47H Stratojet". 12 November 2014. Archived from the original on 12 November 2014. Retrieved 31 March 2018.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  3. "Eighth Air Force History: U.S. Air Force Fact Sheet". af.mil. Archived from the original on 21 February 2013. Retrieved 31 March 2018.
  4. Strategic-Air-Command.com, 509th Composite Group, 509th Bombardment Wing
  5. for the Mark III