A-4 Skyhawk Totally Explained

Everything about The A-4 Skyhawk totally explained

The A-4 Skyhawk was an American attack aircraft originally designed to operate from United States Navy aircraft carriers. The aircraft was designed and produced by Douglas Aircraft Corporation (later McDonnell Douglas) and was originally designated the A4D under the US Navy's pre-1962 designation system.
Fifty years after the aircraft's first flight, and having played key roles in Vietnam, the Falklands and Yom Kippur wars, some of the nearly 3,000 Skyhawks produced remain in service with several air arms around the world, including active duty on a carrier.

Design and development

The Skyhawk was designed by Douglas' Ed Heinemann in response to a US Navy call for a jet-powered attack aircraft to replace the A-1 Skyraider. Heinemann opted for a design that would minimize size, weight and complexity. The result was an aircraft that weighed only half of the Navy's specification and had a wing so compact that it didn't need to be folded for carrier stowage. The diminutive Skyhawk soon received the nicknames "Scooter," "Bantam Bomber", "Tinker Toy Bomber", and, on account of its nimble performance, "Heinemann's Hot-Rod".
   The aircraft is of conventional post-World War II design, with a low-mounted delta wing, tricycle undercarriage, and a single turbojet engine in the rear fuselage, with intakes on the fuselage sides. The tail is of cruciform design, with the horizontal stabilizer mounted above the fuselage. Armament consisted of two 20 mm Colt Mk 12 cannon, one in each wing root, with 200 rounds per gun, plus a large variety of bombs, rockets and missiles carried on a hardpoint under the fuselage centerline and hardpoints under each wing (originally one per wing, later two).
   The design of the A-4 is a good example of the virtues of simplicity. The choice of a delta wing, for example, combined speed and maneuverability with a large fuel capacity and small overall size, thus not requiring folding wings, albeit at the expense of cruising efficiency. The leading edge slats are designed to drop automatically at the appropriate speed by gravity and air pressure, saving weight and space by omitting actuation motors and switches. Similarly the main undercarriage didn't penetrate the main wing spar, designed so that when retracted only the wheel itself was inside the wing and the undercarriage struts were housed in a fairing below the wing. The wing structure itself could be lighter with the same overall strength and the absence of a wing folding mechanism further reduced weight. This is the opposite of what can often happen in aircraft design where a small weight increase in one area leads to a compounding increase in weight in other areas to compensate, leading to the need for more powerful, heavier engines and so on in a cycle.
   The A-4 pioneered the concept of "buddy" self air-to-air refueling. This allows the aircraft to supply others of the same type, eliminating the need of dedicated tanker aircraft - a particular advantage for small air arms or when operating in remote locations. A designated supply A-4 would mount a center-mounted "buddy store", a large external fuel tank with a hose reel in the aft section and an extensible drogue refueling bucket. This aircraft was fuelled up without armament and launched first. Attack aircraft would be armed to the maximum and given just enough fuel allowable by maximum take-off weight limits. Once airborne, they'd then proceed to top up their fuel tanks from the tanker using the A-4's fixed re-fueling probe on the starboard side of the aircraft nose. They could then sortie with both full armament and fuel loads. While rarely used in US service since the KA-3 Skywarrior tanker became available, the F/A-18E/F Super Hornet includes this capability, with a view to the imminent retirement of dedicated tankers.
   The A-4 was also designed to be able to make an emergency landing, in the event of a hydraulic failure, on the two drop tanks nearly always carried by these planes. Such landings resulted in only minor damage to the nose of the aircraft which could be repaired in less than an hour. Ed Heinemann is credited with having a large "K.I.S.S." sign put up on the wall of the drawing office when the aircraft was being designed. Whether this is true, the A-4 certainly is a shining example of the application of that principle to aircraft design.
   The Navy issued a contract for the type on 12 June 1952, and the first prototype first flew on 22 June 1954. Deliveries to Navy and US Marine Corps squadrons commenced in late 1956.
   The Skyhawk remained in production until 1979, with a total of 2,960 aircraft built, including 555 two-seat trainers.

Operational history

United States

The Skyhawk proved to be one of the most popular US naval aircraft exports of the postwar era. Due to its small size, it could be operated from the older, smaller World War II-era aircraft carriers still used by many smaller navies during the 1960s. These older ships were often unable to accommodate newer USN fighters such as the F-4 Phantom II and F-8 Crusader, which were faster and more capable than the A-4, but significantly larger and heavier than older naval fighters.
   The US Navy began removing the aircraft from its front line squadrons in 1967, with the last retiring in 1975.
   The Marines would pass on the Navy's replacement, the A-7 Corsair II, instead keeping Skyhawks in service, and ordering the new A-4M. The last USMC Skyhawk was delivered in 1979, and were used until the mid-1980s before they were replaced by the equally small, but more versatile STOVL AV-8 Harrier II.
   The Diamondbacks of VMA-131,Marine Aircraft Group 49 retired their last four OA-4Ms on 22 June 1994. LtCol. George "Eagle" Lake III (CO), Major John "Baja" Rufo (XO), Captain Dave "Yoda" Hurston and Major Mike "Struts" Volland flew a final official USMC A-4 sortie during the A-4 Standdown Ceremony. Trainer versions of the Skyhawk remained in Navy service, however, finding a new lease on life with the advent of adversary training, where the nimble A-4 was used as a stand-in for the Mikoyan-Gurevich MiG-17 in dissimilar air combat training (DACT). It served in that role until 1999.
   The A-4's nimble performance also made it suitable to replace the F-4 Phantom II when the Navy downsized their aircraft for the Blue Angels demonstration team until the availability of the F/A-18 Hornet in the 1980s. The last US Navy Skyhawks, TA-4J models belonging to composite squadron VC-8, remained in military use for target-towing and as adversary aircraft for combat training at Naval Air Station Roosevelt Roads. They were officially retired on 3 May 2003.
   Skyhawks were well loved by their crews for being tough and agile. These attributes, along with its low purchase and operating cost as well as easy maintenance, have contributed to the popularity of the A-4 with American and international armed forces. Besides the US, at least three other nations used A-4 Skyhawks in combat.

Vietnam War

Skyhawks were the Navy's primary light bomber over both North Vietnam during the early years of the Vietnam War while the USAF was flying the supersonic F-105 Thunderchief. They would be supplanted by the A-7 Corsair II in the Navy light bomber role. Skyhawks carried out some of the first air strikes by the US during the conflict and a Marine Skyhawk is believed to have dropped the last US bombs on the country. Notable naval aviators who flew the Skyhawk included LCdr. Everett Alvarez Jr., Cdr. John McCain, and Vice Admiral James Stockdale. On 1 May 1967, an A-4C Skyhawk piloted by LCDR Theodore R. Swartz of VA-76 aboard the carrier USS Bon Homme Richard, shot down a Soviet-built Mikoyan-Gurevich MiG-17 with an unguided Zuni rocket in the Skyhawk's only air-to-air victory of the war.
   The first loss of an A-4 occurred on 5 August 1964, when LTJG Alvarez, of VA-144 aboard the USS Constellation, was shot down while attacking enemy torpedo boats in North Vietnam. Alvarez safely ejected after being hit by AAA fire, and became the first US Naval POW of the war; he was released as a POW on 12 February 1973. The last A-4 to be lost in the Vietnam War occurred on 26 September 1972, when USMC pilot Capt. James P. Walsh, VMA-211, flying from his land base at Bien Hoa, South Vietnam, was hit by ground fire near An Loc. An Loc was one of the few remaining hotly contested areas during this time period, and Capt. Walsh was providing close air support (CAS) for ground troops in contact (land battle/fire fight) when his A-4 was hit, catching fire, forcing him to eject. Rescue units were sent, but the SAR helicopter was damaged by enemy ground fire, and forced to withdraw. Capt. Walsh, after safely ejecting, had landed within NVA (North Vietnamese Army) positions, and had become a POW as soon as his feet had touched the ground. Capt. Walsh was the last US Marine to be taken prisoner during the war, and was released as a POW on 12 February 1973.
   During the war, 362 A-4/TA-4F Skyhawks were lost to all causes. The US Navy lost 271 A-4s, the US Marine Corps lost 81 A-4s and ten TA-4Fs. A total of 32 A-4s were lost to surface-to-air missiles (SAMs), and one A-4 was lost in aerial combat to a MiG-17 on 25 April 1967.
   On 29 July 1967, the aircraft carrier

Popular culture

The Skyhawk has been featured in some movies, most notably as the aggressor aircraft used by instructors in the movie Top Gun. It is also featured heavily in the anime series Area 88, and in the movie and novel The Sum of All Fears, where a Skyhawk's downing is a pivotal plot point.

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