A-10 Thunderbolt (Warthog), United States of America
The A-10 Thunderbolt is also known as the Warthog, the 'flying gun' and the Tankbuster. The aircraft was used extensively during Operation Desert Storm, in support of Nato operations in response to the Kosovo crisis, in Operation Enduring Freedom in Afghanistan and in Operation Iraqi Freedom.
The A-10 is a high-survivability and versatile aircraft, popular with pilots for the 'get home' effectiveness.
The mission of the aircraft is ground attack against tanks, armoured vehicles and installations, and close air support of ground forces.
The A-10 is suitable for operation from forward air bases, with short take-off and landing capability. The aircraft has a long range (800 miles), high endurance and can loiter in the battle area.
The manoeuvrability at low speed and low altitude (below 1,000ft) allows accurate and effective targeting and weapon delivery over all types of terrain.
A-10 Thunderbolt development
The first flight of the A-10 was in May 1972, and a total of 713 aircraft were produced. The production of A-10 aircraft came to an end in 1984. Originally manufactured by Fairchild, since 1987 the prime contractor for the A-10 has been Northrop Grumman, which carries out support and structural upgrade programmes from the Integrated Systems and Aerostructures Divisions at Bethpage, New York and at St Augustine in Florida.
Over 367 A-10 aircraft are in service with the US Air Force, Air Combat Command, the US Air Force Reserve and the Air National Guard. The aircraft variants currently in service in the US Air force are A-10 (143), and A-10C (70); Reserve A-10 (46) and OA-10 (6); ANG, A-10 (84) and OA-10 (18).
In June 2007, Boeing was awarded a $2bn contract for the A-10 wing replacement programme. Boeing will supply 242 replacement wing sets by 2018.
In September 2009, the US Air Force awarded two contracts worth $4.2m to Boeing for modernising its fleet of 365 A-10 Thunderbolt II aircraft for a period of three to 18 months. The contract was awarded as part of the total $1.6bn A-10 Thunderbolt life-cycle programme support (TLPS) contract.
The two contracts included A-10 Aircraft Structural Integrity Program (ASIP) which involves providing engineering services to the aircraft and upgraded data transfer unit (UDTU) which include trade study analysis and operational assessment / proof of concept. Both the contracts aim at upgrading the aircraft with avionics architecture to improve memory and data capability.
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A-10C – precision engagement upgrade programme
The precision engagement upgrade programme for the A-10 includes enhanced precision target engagement capabilities, which will allow the deployment of precision weapons such as JDAM (joint direct attack munition) and wind-corrected munitions dispenser (WCMD), as well as enabling an extension of the aircraft's service life to 2028.
Improvements include: hands-on throttle and stick control, two new Raytheon Technical Services 5in×5in multifunction cockpit displays, situational awareness datalinks (SADL), digital stores management system, integrated flight and fire control computer (IFFCC) from BAE Systems Platform Solutions for automated continuously computed weapons delivery, Sniper XR or Litening targeting pods for precision-guided weapons and helmet-mounted sighting system.
Lockheed Martin Systems Integration-Owego is prime contractor for the program. First flight of the upgraded A-10C was in January 2005. A contract for low-rate initial production (LRIP) of 72 units was awarded in March 2005. The first was delivered to Baltimore Air National Guard in August 2006.
A contract for full-rate production of 107 units was placed in August 2006. The A-10C achieved initial operating capability in August 2007. 100 A-10s had been upgraded by January 2008. The A10C began operational deployment in Iraq in September 2007. 356 A-10 aircraft have been upgraded in the contract.
In February 2004, Lockheed Martin was awarded a contract for the integration of the Sniper XR targeting pod on the A-10 as part of the PE programme. Sniper XR includes mid-wave FLIR (forward-looking infrared), dual mode laser, CCD-TV, laser spot tracker and IR marker.
The single-seat cockpit is protected by all-round armour, with a titanium 'bathtub' structure to protect the pilot that is up to 3.8cm thick. The cockpit has a large bulletproof bubble canopy, which gives good all-round vision.
The cockpit is equipped with a head-up display, which is used for targeting and weapon aiming, a Have-Quick secure radio communications system, inertial navigation and a tactical air navigation (TACAN) system.
Lockheed Martin has begun delivery of 21 USAF A-10 aircraft with the embedded global positioning system / inertial navigation system (EGI), which pinpoints the exact location of the aircraft. The aircraft are also to be fitted with BAE Systems terrain profile matching systems (TERPROM).
The pilot is equipped with night-vision goggles and also the infrared imaging display of the Maverick AGM-65.
The aircraft has 11 stores pylons, providing an external load capacity of 7,260kg. There are three pylons under the fuselage and the loads can be configured to use either the centre-line pylon or the two flanking fuselage pylons.
For weapon guidance, the aircraft can be fitted with Pave Penny laser guidance / electronic support measures, pod installed on the starboard fuselage pylon. Each wing carries four stores pylons: three outboard and one inboard of the wheel fairing.
The A-10 can carry up to ten Maverick air-to-surface missiles. The Raytheon Maverick AGM-65 missile uses a variety of guidance systems, including imaging infrared guidance and warheads, including a high-penetration, 57kg conical-shaped charge warhead. Range is more than 45km. The A-10 can also carry the Sidewinder air-to-air missile, which is an all-aspect short-range missile with maximum speed over Mach 2.
The A10 is capable of deploying a wide range of ordnance: for example, the LDGP mk82 226kg, 500lb general-purpose bombs, BLU-1 and BLU-27/B Rockeye II cluster bombs and the cluster bomb unit CBU-52/71.
The Northrop Grumman Litening ER (extended range) targeting pod has been successfully integrated on an A-10. Litening ER features a 640×512 pixel thermal imager, CCD TV, laser spot tracker / rangefinder, IR marker and laser designator.
The aircraft is armed with a General Dynamics GAU-8/A Avenger 30mm cannon, mounted in the nose of the aircraft.
Using the cannon, the A-10 is capable of disabling a main battle tank from a range of over 6,500m. The cannon can fire a range of ammunition, including armour-piercing incendiary rounds (API) weighing up to 0.75kg, or uranium-depleted 0.43kg API rounds.
The magazine can hold 1,350 rounds of ammunition. The pilot can select a firing rate of 2,100 or 4,200 rounds a minute.
The two non-afterburning turbo fan engines, TF34-GE-100, supplied by General Electric, each supply 9,065lb thrust. The location of the engines, high on the fuselage, allows the pilot to fly the aircraft fairly easily with one engine inoperable.