The Republic Aviation Corporation was an American aircraft manufacturer based in Farmingdale, New York, on Long Island. Originally known as the Seversky Aircraft Company, the company was responsible for the design and production of many important military aircraft, including its most famous products: World War II's P-47 Thunderbolt fighter, the F-84 Thunderjet and F-105 Thunderchief jet fighters, as well as the A-10 Thunderbolt II close-support aircraft.
The Seversky Aircraft Company was founded in 1931 by Alexander de Seversky, a Russian expatriate and veteran World War Ipilot who had lost a leg in the war. In the beginning, many of Seversky Aircraft's designers were Russian and Georgian engineers, including Michael Gregor and Alexander Kartveli, who would go on to design many of Republic's most famous aircraft.[1]
After several failed attempts, Seversky Aircraft finally won a design competition for a new United States Army Air Corps fighter, and was awarded its first military contract in 1936 for the production of its Seversky P-35.[1]
In 1939, Seversky Aircraft again entered in a military fighter competition, this time with the much-improved AP-4. While the contract was awarded to the Curtiss P-40, the USAAC was impressed with the high-altitude performance of the AP-4 and ordered 13 additional aircraft for testing,[1] as the XP-43.
By April 1939, the Seversky Aircraft Corporation had lost $550,000, and Seversky was forced out of the company he had founded. The board, led by financierPaul Moore, voted W. Wallace Kellett to replace him as president, and in September 1939 the company was reorganized as the Republic Aviation Corporation. Seversky continued to fight for his company, and the matter was not resolved to his satisfaction until September 1942.[2]
Meanwhile, Seversky's AP-4 continued in development, finally going into production as the P-43 Lancer. 272 P-43s were eventually produced, with 108 of them being sent to China to be used against the Japanese. Many passed through the hands of the AVG Flying Tigers, whose pilots were pleased with the plane's performance at altitudes up to 30,000ft (9,100m), while their P-40s were ineffective at altitudes over 20,000ft (6,100m). Perhaps Claire Chennault disliked the early P-43's lack of self-sealing fuel tanks and armor.[original research?] He declined to retain the plane for his crews.[2]
In 1939, both Republic and Curtiss participated in an Army competition to develop a lightweight interceptor. Curtiss submitted a lightweight version of the P-40 designated the XP-46 while Republic submitted a similar design designated the XP-47. Both designs were based on a lightweight aircraft built around an Allison V-1710 V-12 engine, with the Republic design using a turbosupercharger. In the end, neither design showed a significant improvement over the P-40, and neither was produced.[2]
A 1943 advertisement for REPUBLIC AVIATION from Flight & Aircraft Engineer magazine
Further development of the P-43 continued in the form of a lightweight version using a Pratt & Whitney R-2180radial engine. The resulting aircraft was known as the XP-44. When the R-2180 did not produce the expected horsepower, Republic switched to the Wright R-2600. Despite possessing 1,600 horsepower (1,200kW), this engine could not be turbo-supercharged and Republic finally modified the design again, this time to accommodate the enormous Pratt & Whitney R-2800 Double Wasp engine, which produced 1,850 horsepower (1,380kW). The resulting aircraft, now known as the P-44, was truly impressive. Capable of speeds of 404mph (650km/h) at 20,000ft (6,100m), and a climb rate of 4,000ft (1,200m) per minute, the aircraft would have been an exceptional interceptor. Unfortunately, it was capable of carrying no more fuel than the P-43, and the Double Wasp engine was far more thirsty, significantly limiting the aircraft's range.[2][3]
As the air war in Europe progressed, the Army was discovering that what it really needed was a long-range fighter capable of escorting bombers into Germany. Alexander Kartveli was called to the Army's Experimental Aircraft division and told of the new requirements, and that the P-44 would not be ordered in its current configuration. This was a devastating setback for Kartveli and Republic Aircraft because Kartveli knew the XP-44 could not be redesigned to meet these new requirements. On the train back to New York City, he began sketching a new design. This aircraft would become the P-47 Thunderbolt.[2]
P-47 Thunderbolt
The USAAF refused to give Republic any money for the development of the new XP-47B, so Republic paid for the construction of the first mock-up, reusing the cockpit area of the P-43. By the time the prototype was ready for testing, it weighed over 12,550lb, 900lb (410kg) over the Army's limit for the new fighter design, and far more than any single-engine fighter ever developed. It also could carry only 298 gallons of fuel, 17 gallons less than the requirement, but the Army was generally pleased with its performance, achieving speeds of 412mph (663km/h) at 25,800ft (7,900m), and overlooked these issues.[4]
The U.S. entry into the war in December 1941 rapidly increased the need for the XP-47B and work on the plane progressed quickly. In June 1942, the Army took delivery of its first P-47Bs. They soon placed an order that required Republic Aviation to quadruple the size of their factory and build three new runways at the Farmingdale, New York factory. Eventually this proved inadequate, and in November 1942, the Army authorized the construction of a new factory adjacent to the Evansville, Indiana airport.[5]
Throughout the war, the P-47 would undergo constant development. A bubble canopy was added to increase rearward visibility.[6] The final version of the P-47 would be the P-47N, a long-range version with longer wings and fuselage, and an increased fuel capacity. The P-47N was designed to escort B-29s on long missions to Japan for a planned invasion of the Japanese homeland that never came. Production of all versions ended in November 1945. By then, 15,660 P-47s had been built, making it the most produced U.S. fighter of the war. Of those, 1,816 would be the long-range P-47N model. This model would continue to serve with Air Force Reserve and Air National Guard units until the mid-1950s.[7][8] Republic ranked 24th among United States corporations in the value of wartime production contracts.[9]
RC-3 Seabee
In 1946, Republic temporarily left the field of military contracts to produce the Republic RC-3 Seabee, an unusual all-metal amphibian. The Seabee was the brainchild of Percival "Spence" Spencer, a former Republic P-47 test pilot. He convinced the Republic board of the need for a light sport plane to meet a demand for private aircraft from pilots returning from World War II. The expected sales of 5,000 Seabees a year never materialized, as most returning pilots never flew again, though Republic did manage to sell 1,060 Seabees in two years of production. This was a respectable number at a time when many small aircraft manufacturers were producing only a handful of aircraft before going bankrupt. Much of this was due to the Seabee's remarkably low price of just $3,500 to $6,000.
F-84 family
In 1946, Republic again turned its attention to military contracts, developing a single-engine jet fighter to meet an Army requirement for a fighter with a top speed of 600mph (970km/h). The first YP-84A Thunderjet flew on February 28, 1946, but the aircraft was plagued with so many developmental problems that the first F-84B didn't enter Air Force service until 1949. The straight-wing F-84D would go on to become an important aircraft during the Korean War, flying 86,408 missions. In 1949, a swept-wing version, the F-84F Thunderstreak, was developed but additional development and engine problems resulted in the aircraft not entering service until 1954. A photo-reconnaissance version known as the RF-84F Thunderflash was developed from the F-84F, and 715 were produced. The final straight-wing version, known as the F-84G, was a holdover design for Republic while the J-65 engine for the swept wing F-84F was still being developed. The F-84F would continue in service with Air National Guard units until 1971, when corrosion forced them to be withdrawn from U.S. service. The F-84F and RF-84F were both used by several foreign operators including Germany, The Netherlands, Belgium, France, Italy, Greece, Turkey, and Denmark (one squadron of RF-84F that were phased out in 1971). The F-84F continued to serve in European air forces until the 1980s.[citation needed]
F-105 Thunderchief
In 1951, Alexander Kartveli began to design a replacement for the F-84 Thunderjet. The new aircraft would be a single-engine fighter, but larger than any single-engine fighter ever designed for the Air Force. By the time the mock-up was completed in October 1953, the aircraft had grown so large that a more powerful engine was needed; the Pratt & Whitney J75 was finally selected. On June 28, 1954, the Air Force placed an order for 15 of the new F-105A Thunderchief. The aircraft weighed 50,000lb (23,000kg), but could carry up to 14,000lb (6,400kg) of bombs and missiles, and could fly at Mach 1 at sea level and Mach 2 at altitude. Although it had only one engine, the F-105 could carry a larger bomb load than a four-engine World War II bomber, and travel a greater distance at much higher speed. The F-105 would become the primary ground attack aircraft of the Vietnam War, flying over 20,000 missions until replaced by the McDonnell Douglas F-4 Phantom II in November 1970. Of the 833 F-105s produced, 397 were lost during the Vietnam War. Seventeen were shot down by North VietnameseMiGs, while most of the rest were lost to ground fire. The F-105 was Republic Aviation's last independent design.
A two-seat version, the F-105G, known as "Wild Weasel", was later developed to replace the "Wild Weasel" version of the F-100. The first F-105G flew on January 15, 1966, and deliveries began arriving in Southeast Asia in June 1966. This version continued operating in theater long after the ground attack versions had been withdrawn and was still in service at the end of the war.
The final years
In December 1957, Republic developed a helicopter division, building the French Aérospatiale Alouette II helicopter under license, with marginal sales success.
In an effort to keep the company going, Republic proposed converting a wartime-developed four-engine reconnaissance aircraft (the XF-12 Rainbow) into a transport aircraft. The aircraft would be very fast for a prop plane, but interest from airlines was not sufficient to continue development of the aircraft and the project was cancelled.
Republic Aviation made one last attempt to survive by returning to military contracts. In 1960, Republic Aviation acquired a minority interest in the Dutch aircraft company Fokker, and attempted to market a Fokker-designed attack plane (Fokker/Republic D-24 Alliance variable sweep wing VTOL) to the Air Force, but the Air Force showed little interest in the foreign design and no contracts were offered.
In the early 1960s, the aerospace company Fairchild, owned by Sherman Fairchild, began purchasing Republic's stock and finally acquired Republic Aviation in July 1965. In September, Republic became the Republic Aviation Division of Fairchild Hiller and ceased to exist as an independent company.
Republic's naming system was carried forward by Fairchild Hiller with the A-10 Thunderbolt II, which first flew in May 1972.
Legacy
In addition to the continued front-line use of the A-10, a number of flying and static restorations have served to sustain public awareness of Republic's role in aviation history. The American Airpower Museum, which is based on the former Republic factory site in Farmingdale, New York, maintains a collection of Republic artifacts, historic facilities, and an array of aircraft spanning the history of the company. The museum counts itself among the few worldwide that actually maintain and fly historic aircraft, and it counts an original Republic P-47D fighter among its airworthy fleet. The museum's static displays include a Republic F-84 first generation jet fighter, an F-84F swept-wing fighter, a rare example of the RF-84F reconnaissance variant, and an F-105 Thunderchief. In 2014, the museum added an A-10 Warthog, completing the collection of Republic fighters. The museum's volunteer corps includes both former Republic line workers and Air Force veterans with direct Republic Aviation flight experience.
During the fall of 1987, Fairchild Corporation (then Republic's parent company) destroyed Republic's corporate archives. Joshua Stoff, the curator of the Cradle of Aviation Museum on Long Island, wrote in Air & Space Magazine that, upon being invited to have a last look at the archives, he surreptitiously took one document with him. That lone surviving document was a contract for 225 P-47Bs from Republic for the US Army Air Corps at a cost of $16,275,657.50 (War Department Contract #15850, dated September 13, 1940).[10] It is now housed at the museum.
The Long Island Republic Airport Historical Society, housed in the lobby of the Republic Airport Main Terminal building, maintains several photo exhibits on Republic aviation and Republic aircraft. It also maintains an extensive collection of archival photos, artifacts, corporate documents, and news articles on Republic.
The Lockheed P-80 Shooting Star was the first jet fighter used operationally by the United States Army Air Forces (USAAF) during World War II. Designed and built by Lockheed in 1943 and delivered just 143 days from the start of design, production models were flying, and two pre-production models did see very limited service in Italy just before the end of World War II. Designed with straight wings, the type saw extensive combat in Korea with the United States Air Force (USAF) as the F-80.
The Republic P-47 Thunderbolt is a World War II-era fighter aircraft produced by the American company Republic Aviation from 1941 through 1945. It was a successful high-altitude fighter, and it also served as the foremost American fighter-bomber in the ground-attack role. Its primary armament was eight .50-caliber machine guns, and it could carry 5-inch rockets or a bomb load of 2,500 lb (1,100 kg). When fully loaded, the P-47 weighed up to 8 tons, making it one of the heaviest fighters of the war.
The Boeing P-26 "Peashooter" was the first American production all-metal fighter aircraft and the first pursuit monoplane to enter squadron service with the United States Army Air Corps. Designed and built by Boeing, the prototype first flew in 1932, and the type was still in use with the U.S. Army Air Corps as late as 1941 in the Philippines. There are two surviving Peashooters, but there are three reproductions on display with two more under construction.
The Republic XF-91 Thunderceptor is a mixed-propulsion prototype interceptor aircraft, developed by Republic Aviation. The aircraft would use a jet engine for most flight, and a cluster of four small rocket engines for added thrust during climb and interception. The design was largely obsolete by the time it was completed due to the rapidly increasing performance of contemporary jet engines, and only two prototypes were built. One of these was the first American fighter to exceed Mach 1 in level flight.
The Republic F-84 Thunderjet was an American turbojet fighter-bomber aircraft. Originating as a 1944 United States Army Air Forces (USAAF) proposal for a "day fighter", the F-84 first flew in 1946. Although it entered service in 1947, the Thunderjet was plagued by so many structural and engine problems that a 1948 U.S. Air Force review declared it unable to execute any aspect of its intended mission and considered canceling the program. The aircraft was not considered fully operational until the 1949 F-84D model and the design matured only with the definitive F-84G introduced in 1951. In 1954, the straight-wing Thunderjet was joined by the swept-wing F-84F Thunderstreak fighter and RF-84F Thunderflash photo reconnaissance aircraft.
Alexander Kartveli, born Aleksandre Kartvelishvili, was a Georgian aeronautical engineer and an aviation pioneer in the United States. Kartveli achieved important breakthroughs in military aviation in the time of turbojet fighters.
The Curtiss-Wright XF-87 Blackhawk was a prototype American all-weather jet fighter-interceptor, and the company's last aircraft project. Designed as a replacement for the World War II–era propeller-driven P-61 Black Widow night/interceptor aircraft, the XF-87 lost in government procurement competition to the Northrop F-89 Scorpion. The loss of the contract was fatal to the company; the Curtiss-Wright Corporation closed down its aviation division, selling its assets to North American Aviation.
The Seversky P-35 is an American fighter aircraft built by the Seversky Aircraft Company in the late 1930s. A contemporary of the Hawker Hurricane and Messerschmitt Bf 109, the P-35 was the first single-seat fighter in United States Army Air Corps to feature all-metal construction, retractable landing gear, and an enclosed cockpit.
The Curtiss-Wright XP-55 Ascender is a 1940s United States prototype fighter aircraft built by Curtiss-Wright. Along with the Vultee XP-54 and Northrop XP-56, it resulted from United States Army Air Corps proposal R-40C issued on 27 November 1939 for aircraft with improved performance, armament, and pilot visibility over existing fighters; it specifically allowed for unconventional aircraft designs. An unusual design for its time, it had a canard configuration, a rear-mounted engine, swept wings, and two vertical tails. Because of its pusher design, it was satirically referred to as the "Ass-ender". Like the XP-54, the Ascender was designed for the Pratt & Whitney X-1800 engine, but was redesigned after that engine project was canceled. It was also the first Curtiss fighter aircraft to use tricycle landing gear.
George Schwartz Welch was a World War II flying ace, a Medal of Honor nominee, and an experimental aircraft pilot after the war. Welch is best known for having been one of the few United States Army Air Corps fighter pilots able to get airborne to engage Japanese forces in the attack on Pearl Harbor and for his work as a test pilot. Welch resigned from the United States Army Air Forces as a major in 1944, and became a test pilot for North American Aviation.
Alexander Nikolaievich Prokofiev de Seversky was a Russian-American aviation pioneer, inventor, and influential advocate of strategic air power.
The Republic P-43 Lancer was a single-engine, all-metal, low-wing monoplane fighter aircraft built by Republic, first delivered to the United States Army Air Corps in 1940. A proposed development was the P-44 Rocket. While not a particularly outstanding fighter, the P-43A had a very good high-altitude performance coupled with an effective oxygen system. Fast and well-armed with excellent long-range capabilities, until the arrival of the Lockheed P-38 Lightning, the Lancer was the only American fighter capable of catching a Japanese Mitsubishi Ki-46 "Dinah" reconnaissance plane at the speeds and heights at which they flew. In addition, the P-43 flew many long-range, high-altitude photo recon missions until replaced by F-4/F-5 Lightnings in both the USAAF and RAAF.
The Curtiss P-60 was a 1940s American single-engine single-seat, low-wing monoplane fighter aircraft developed by the Curtiss-Wright company as a successor to their P-40. It went through a lengthy series of prototype versions, eventually evolving into a design that bore little resemblance to the P-40. None of these versions reached production.
The Grumman XP-50 was a land-based development of the shipboard XF5F-1 Skyrocket fighter, entered into a United States Army Air Corps (USAAC) contest for a twin-engine heavy interceptor aircraft. The USAAC placed an order for a prototype on 25 November 1939, designating it XP-50, but it lost the competition to the Lockheed XP-49.
The FICON program was conducted by the United States Air Force in the 1950s to test the feasibility of a Convair B-36 Peacemaker bomber carrying a Republic F-84 Thunderflash parasite fighter in its bomb bay. Earlier wingtip coupling experiments included Tip Tow, which were attempts at carrying fighters connected to the wingtips of bombers. Tom-Tom followed the FICON project afterwards.
The Douglas XP-48 was a small, lightweight fighter aircraft, designed by Douglas Aircraft in 1939 for evaluation by the U.S. Army Air Corps. Intended to be powered by a small inline piston engine, the contract was cancelled before a prototype could be constructed, due to the Army's concerns about the projected performance of the aircraft.
The Republic F-84F Thunderstreak was an American swept-wing turbojet fighter-bomber. While an evolutionary development of the straight-wing F-84 Thunderjet, the F-84F was a new design. The RF-84F Thunderflash was a photo reconnaissance version.
The Republic RC-3 Seabee is an all-metal amphibious sports aircraft designed by Percival Spencer and manufactured by the Republic Aircraft Corporation.
The Berliner-Joyce P-16 was a 1930s United States two-seat fighter aircraft produced by Berliner-Joyce Aircraft Corporation.
The P-47 Thunderbolt was a World War II fighter aircraft built by Republic Aviation from 1941 to 1945.
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