A7 Fighter Jet - The LTV A-7 Corsair II is an American transportable subsonic light attack aircraft designed and manufactured by Ling-Temco-Vought (LTV).
The A-7 was developed in the early 1960s to replace the Douglas A-4 Skyhawk. Its design was derived from the Vought F-8 Crusader; Compared to the F-8, the A-7 is smaller and limited to subsonic speeds because its airframe is simpler and cheaper to manufacture. Following a competitive bid by Vought in response to a VAL (Heavy-Over-Air, Attack, Light) requirement by the United States Navy (USN), the initial contract for this type was awarded in 1964. on February 8. The development was quickly, first flying in 1965. on September 26 and 1967 On that day of the year, A-7s were being sent overseas for the Vietnam War.
A7 Fighter Jet
Initially adopted by the USN, the A-7 was attractive to other services, and was soon adopted by the United States Air Force (USAF) and the Air National Guard (ANG) to replace their Douglas A-1 Skyraider and the North American F - in 100. Fleets Super Sabre. Upgraded models of the A-7 will be developed, usually adopting more powerful devices and increasingly capable avionics. American A-7s would be used in several major conflicts, including the invasion of Grada, El Dorado Canyon, and the Persian Gulf War. The type was also used to support the development of the Lockheed F-117 Nighthawk.
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The A-7 was also exported to Greece in the 1970s and to Portugal in the late 1980s. The USAF and USN decided to retire their remaining examples of the type in 1991, followed by the ANG in 1993 and the Portuguese Air Force in 1999. The A-7 was largely replaced by newer fighters such as General Dynamics F-16 Fighter. Falcon and the McDonnell Douglas F/A-18 Hornet. The last operator, Hell Air Force, retired the last A-7s in 2014.
In 1960, United States Navy (USN) officials began considering the need to replace its existing fleet of Douglas A-4 Skyhawk light attack aircraft.
It was not clear at the time that the A-4 would ultimately continue in production until 1979; Furthermore, according to aviation authors Bill Gunston and Peter Gilchrist, some figures believe there is an unmet need for a more capable attack platform that can regularly reach supersonic speeds, carry heavier payloads and fly farther than its predecessors . Supporters of the new attack aircraft included Defense Secretary Robert McNamara, who urged the Navy to consider the issue.
In December 1962, the Naval Air Strike Force (SBASF) Study Group began studying detailed performance and cost estimates on the subject.
Vietnamera A7 Corsair Fighter Jet Stock Photo 59686492
The team analyzed a total of 144 hypothetical aircraft to confirm their findings. According to Gunston and Gilchrist, the main finding of these studies was that a subsonic aircraft would be more efficient than a supersonic one.
By giving up supersonic capability, the aircraft could be smaller, cheaper and easier to manufacture. Much more of such an attack surface can be achieved with a supersonic platform. Development speed was also increased, keeping to subsonic speeds, which was another advantage.
Special attention was paid to the correct distribution of weapons, which will reduce the cost of ammunition per target.
On 17 May 1963, these criteria were drawn up into a draft requirement called VAL (Heavy Than Air, Attack, Light).
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Vought's proposal was based on their successful F-8 Crusader fighter and shares a similar configuration; However, it had a shorter airframe with a rounded nose, which gave the aircraft a more "sneaky" look.
All applications were received by September 1963 and the evaluation process was completed early in November of that year.
On February 8, 1964, Congress approved funding for VAL, enabling the program to proceed; three days later, Vought's submission was chosen as the winner.
On March 19, 1964, Woft received a contract from the Navy to produce the initial batch of aircraft, designated the A-7.
File:ltv A 7e Corsair Ii Of Va 72 In Flight On 5 June 1991 (6465576).jpg
In 1965, the A-7 was designated the Corsair II; Vought had previously produced three aircraft known as the Corsair. In the 1920s the two O2U Corsair reconnaissance and observation aircraft and the SBU Corsair reconnaissance bomber were produced in the 1930s. During the Second World War, the company produced the successful F4U Corsair. The name Corsair II reflects the famous F4U Corsair, which famously served as a capable fighter in World War II and the Korean War. It was meant to distinguish between aircraft of the same manufacturer and intended for the same ground attack role.
On November 2, 1965, Vought publicly displayed the first pair of A-7As to 1,000 guests; Test pilot John Conrad demonstrated the aircraft's ability to perform rapid turns while carrying six 250 lb (110 kg) and twelve 500 lb (230 kg) bombs. A Navy spokesman acknowledged that the A-7 can carry twice the payload of an A-4E, or the same payload twice the maximum range.
The flight test program progressed relatively quickly, with no major failures or significant delays. According to Gunston and Gilchrist, there were some Navy officials who tried to slow down the program so that the A-7's avionics systems could be modified to gain more capabilities, but this option was overruled by the perceived imperative to enter service with the type.
On October 14, 1966, enough aircraft were delivered to the Navy to form the first squadron.
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The first A-7 squadrons became operational on 1 February 1967; they were able to begin overseas combat operations in December of that year during the escalating Vietnam War.
1965 a subsequent contract in September ordered another 140 aircraft. A third contract for 17 aircraft resulted in a total production of 199 A-7As.
As the original version was found to be underpowered, a large order was placed for 196 aircraft of the improved A-7B version with the more powerful Pratt & Whitney TF30-8 engine. Further versions of the type would be ordered, including the A-7D for the United States Air Force (USAF), in 1966.
Partly due to a lack of wines, the Allison TF41-A-2, a licensed derivative of the Rolls-Royce Spey winery, powered the A-7D.
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In 1967, the Navy decided to cancel the A-7B order, resulting in 257 fewer aircraft being built.
In its place, the A-7E, the final model of the aircraft, was refined and put into service. This version incorporated a number of improvements to the USAF A-7D, including the TF41 wing and most of its avionics; However, the medium has been revised for a bit more emphasis and the communications have been adapted to ensure compatibility with marine systems.
On November 25, 1968, the first A-7E made its maiden flight. A total of 535 aircraft of this version will be produced.
Several specialist models were also developed during the 1970s and 1980s, such as the TA-7C for training and the EA-7L for electronic warfare.
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The LTV A-7 Corsair II was a transportable subsonic attack fighter. It was derived from the Vought F-8 Crusader, an earlier fighter; Compared to the Crusader, it had a shorter, wider fuselage and a wing with a longer span, but without the variable descent characteristic of the Crusader. The A-7's wing was not only larger, but also had less sweep, as well as six pylons carrying up to 15,000 pounds (6,800 kg) of bombs or other equipment.
According to Gunston and Gilchirst, there were no common structural features between the two aircraft, despite their visual similarities and common heritage.
However, conventional outboard ailerons were used (instead of the F-8's hinged ailerons mounted in the wing crease and doubled as the flaps were deployed), as well as large slotted flaps on the inboard wing; the wing crease was between the flaps and the airfoils. The leading edge of the wing was knotted and there was a dog tooth cut.
A large air brake was fitted to the underside of the aircraft. The landing gear pulled three units back into the fuselage; the twin nose wheel gear was rudder and tensioner for catapult assisted take off.
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To achieve the required range, early versions of the A-7 were powered by a single Pratt & Whitney TF30-P-6 turbofan engine that produced 11,350 lbf (50.5 kN) of thrust.
The same engine also powered several other fighter jets of the era, including the General Dynamics F-111 Aardvark and early Grumman F-14 Tomcats. The TF30-P-6 did not require an afterburner for its subsonic role.
Further versions of A-7 are different from wines. According to Gunston and Gilchrist, this was mainly due to the production difficulties meeting the many military and civilian requirements.
These new powerplants included the more powerful Pratt & Whitney TF30-8 and the Allison TF41-A-2 win, a supercharged model of the Rolls-Royce Spey win. The TF41 fixed problems that plagued the original A-7 operation, such as heavy compressor chambers and low thrust.
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The Air Force A-7D was self-contained, using internal batteries and a gas turbine starter. The Navy A-7E used an air turbine starting motor with an external air supply.
Air was fed into the winch through a simple nose inlet tube similar to that of the F-8, despite the potential danger to the flight deck crew.
Two cannons were placed on the base
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