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A gun pod is a detachable pod or pack containing machine guns, autocannons, revolver cannons, or rotary cannons and ancillaries, mounted externally on a vehicle such as a military aircraft which may or may not also have its own guns.
A gun pod typically contains one or more guns, a supply of ammunition, and, if necessary, a power source. Electrically powered cannon, such as the M61 Vulcan, may be powered from the aircraft's electrical system or by a ram-air turbine.
Gun pods increase a vehicle's firepower without occupying internal volume. When not required for a specific mission they can be omitted to save weight. [1] On some vehicles they isolate delicate internal components such as radar from the weapon's recoil and gases, and for jet aircraft allow the weapons to be mounted away from the intakes of the engines, reducing problems of gun-gas ingestion, which may cause the engine to stall.
When designed to be suspension-mounted on a hardpoint on a typical post-WW II aircraft, gun pods are inherently less accurate than integral guns, or the type of "conformal" gun pods that are faired smoothly into or onto the nearby surfaces of an aircraft, because the "hardpoint" mounting is necessarily less rigid, so that the weapon's recoil produces more deflection. This problem is particularly acute with powerful cannon like the 30mm GPU-5 gun pod. Both hardpoint-mounted and conformal-mount gun pods also cause substantial drag on fast-moving vehicles such as fighter aircraft.
Gun pods are commonly carried on military helicopters, and are often fitted to light aircraft to equip them for counter-insurgency operations. Some air arms use gun pods for fighter bombers for use in strafing attacks.
In World War II the Third Reich's Luftwaffe made use of many different, and most often rigidly mounted, conformal and suspended-mount gun pod systems usually called Waffenbehälter (prefix of WB, literally 'weapon container') or Waffenträger (prefix of WT, literally 'weapon carrier'), and carrying anything from rifle caliber MG 81 machine guns, all the way up to the enormous Bordkanone anti-tank cannon based ordnance weapon series, ranging from 37 to 75mm in caliber, though the usual underwing conformal gun pods fitted to Bf 109 and Fw 190 single engined fighters used either the MG 151/20 or MK 108 in gun pod mounts.
Other countries also used gun pods on their aircraft; the U.S. SBD Dauntless could be equipped with two gun pods on each wing, each with two M2 Browning machine guns.
The Bristol Blenheim Mk.1F of the Royal Air Force was a night fighter conversion of the twin engine light bomber equipped with airborne interception radar and armed with four .303 in (7.7 mm) Browning machine gun in a special gun pack under the fuselage. The Mk.IVF was a long range fighter version armed with the same gun pack.
The RAF Hawker Hurricane Mk.IID of 1942 was an early and extremely successful example of tank busting aircraft of the North African campaign armed with two 40 mm (1.57 in) Vickers S gun with 15 rounds mounted in gondola-style pods, one under each wing.
Lessons learned during the Vietnam War showed the effectiveness of guns. Then expensive fighter jets such as the F-4 didn't even carry an internal cannon. Missiles (thought to be superior) -- in particular radar-guided missiles—had notoriously poor combat track records in air-to-air combat. Engineers and air crews quickly created a solution by attaching rotary cannons in a cut-out fuel drop tank, creating an impromptu gun pod suitable for attacking ground targets.[ citation needed ]
Since the Vietnam War, United States Air Force policy has been that the use of multimillion-dollar aircraft for strafing is not economically justified, but the Soviet Union, and subsequently Russia, have remained proponents of strafing, and have continued to develop systems for this purpose.
Soviet experience in Afghanistan in the 1980s led to an unusual innovation in the form of the SPPU series of gun pods, which have traversable barrels allowing them to continue to fire on a fixed target as the aircraft passes overhead.
The M61 Vulcan is a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm × 102 mm rounds at an extremely high rate. The M61 and its derivatives have been the principal cannon armament of United States military fixed-wing aircraft for over sixty years.
An autocannon, automatic cannon or machine cannon is a fully automatic gun that is capable of rapid-firing large-caliber armour-piercing, explosive or incendiary shells, as opposed to the smaller-caliber kinetic projectiles (bullets) fired by a machine gun. Autocannons have a longer effective range and greater terminal performance than machine guns, due to the use of larger/heavier munitions, but are usually smaller than tank guns, howitzers, field guns, or other artillery. When used on its own, the word "autocannon" typically indicates a non-rotary weapon with a single barrel. When multiple rotating barrels are involved, such a weapon is referred to as a "rotary autocannon" or occasionally "rotary cannon", for short.
A gunship is a military aircraft armed with heavy aircraft guns, primarily intended for attacking ground targets either as airstrike or as close air support.
Strafing is the military practice of attacking ground targets from low-flying aircraft using aircraft-mounted automatic weapons. Less commonly, the term is used by extension to describe high-speed firing runs by any land or naval craft such as fast boats, using smaller-caliber weapons and targeting stationary or slowly-moving targets.
The General Electric GAU-8/A Avenger is a 30 mm hydraulically driven seven-barrel Gatling-style autocannon that is primarily mounted in the United States Air Force's Fairchild Republic A-10 Thunderbolt II. Designed to destroy a wide variety of ground targets, the Avenger delivers very powerful rounds at a high rate of fire. The GAU-8/A is also used in the Goalkeeper CIWS ship weapon system, which provides defense against short-range threats such as highly maneuverable missiles, aircraft, and fast-maneuvering surface vessels. The GAU-8/A is produced by General Dynamics.
The General Dynamics GAU-12/U Equalizer is a five-barrel 25 mm Gatling-type rotary cannon. The GAU-12/U is used by the United States, Italy and Spain, which mount the weapon in their attack jets such as the AV-8B Harrier II, airborne gunships such as the Lockheed AC-130, and land-based fighting vehicles. A lighter four-barrel version, designated GAU-22/A, is mounted on F-35 Lightning II fighter jets.
The Yakovlev Yak-38 was Soviet Naval Aviation's only operational VTOL strike fighter aircraft in addition to being its first operational carrier-based fixed-wing aircraft. It was developed specifically for, and served almost exclusively on, the Kiev-class aircraft carriers.
The M230 Cannon is a 30 mm (30×113 mm), single-barrel electrically-driven autocannon, using external electrical power to cycle the weapon between shots. It was designed and manufactured originally by Hughes Helicopters in Culver City, California. As of 2019, it is produced by Northrop Grumman Innovation Systems.
The M134 Minigun is an American 7.62×51mm NATO six-barrel rotary machine gun with a high rate of fire. It features a Gatling-style rotating barrel assembly with an external power source, normally an electric motor. The "Mini" in the name is in comparison to larger-caliber designs that use a rotary barrel design, such as General Electric's earlier 20 mm M61 Vulcan, and "gun" for the use of rifle ammunition as opposed to autocannon shells.
The Gryazev-Shipunov GSh-6-23 is a six-barreled 23 mm rotary cannon used by some modern Soviet/Russian military aircraft.
The Gryazev-Shipunov GSh-23 is a twin-barreled 23 mm autocannon developed in the Soviet Union, primarily for military aircraft use. It entered service in 1965, replacing the earlier Nudelman-Rikhter NR-23 and Rikhter R-23.
The Royal Small Arms Factory ADEN cannon is a 30 mm revolver cannon used on many military aircraft, particularly those of the British Royal Air Force and Fleet Air Arm. Developed post-World War II primarily to meet British Air Ministry's requirement for increased lethality in aircraft armament, the cannon was fired electrically and is fully automatic once it is loaded.
The Gryazev-Shipunov GSh-30-2 (ГШ-30-2) or GSh-2-30 is a Soviet dual-barrel autocannon developed for use on certain ground attack military aircraft and helicopters.
The General Electric GAU-13/A is a 30 mm electric Gatling-type rotary cannon derived from the GAU-8 Avenger cannon.
The Rheinmetall-Borsig MK 103 was a German 30 mm caliber autocannon that was mounted in German combat aircraft during World War II. Intended to be a dual purpose weapon for anti-tank and air-to-air fighting, it was developed from the MK 101. Compared to the MK 101 it was faster firing, and was originally intended to develop a higher muzzle velocity than the MK 101. Unlike the MK 101, the MK 103 used a belt feed, allowing it to potentially carry a larger ammunition load. The MK 103 used electrically primed rather than percussion-primed ammunition. The operating mechanism differed from the recoil-operated MK 101 in that it used a combination of gas and recoil operation. After firing, gas pressure served to unlock the breech, while barrel recoil was used to cycle the action.
The Glagolev-Shipunov-GryazevGShG-7.62 is a four-barreled rotary machine gun designed in the Soviet Union, similar to firearms such as the M134 Minigun. It is a hybrid weapon using both propellant gas and an electric drive to rotate the barrels, which is in contrast with most other rotary guns. It was developed in 1968–1970 for the Mi-24 helicopter together with YakB 12.7mm machine gun, and is currently used in GUV-8700 gun pods, and flexible mounts on Kamov Ka-29.
The Yakushev-Borzov YakB-12.7 mm is a remotely controlled 12.7×108mm caliber four-barrel rotary heavy machine gun developed by the Soviet Union in 1973 for the Mil Mi-24 attack gunship and low-capacity troop transporter, with 1470 rounds, which can also be mounted in GUV-8700 machine-gun pods with 750 rounds. It has a high rate of fire and is also one of the few self-powered guns of the Gatling type.
The 23×115mm round is used in Soviet (USSR)/Russian/CIS aircraft autocannon. Although superseded by the 30×165mm round the Russian Air Force still uses it in the GSh-23L and the GSh-6-23. This round still serves in many countries and is widely available. The projectile weight is 175 grams.
Media related to Aircraft gun pods at Wikimedia Commons
