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The Fiat G.55 ''Centauro'' ( Italian: "
Centaur A centaur ( ; grc, κένταυρος, kéntauros; ), or occasionally hippocentaur, is a creature from Greek mythology with the upper body of a human and the lower body and legs of a horse. Centaurs are thought of in many Greek myths as being ...
") was a single-engine single-seat World War II
fighter aircraft Fighter aircraft are fixed-wing military aircraft designed primarily for air-to-air combat. In military conflict, the role of fighter aircraft is to establish air superiority of the battlespace. Domination of the airspace above a battlefield ...
used by the ''
Regia Aeronautica The Italian Royal Air Force (''Regia Aeronautica Italiana'') was the name of the air force of the Kingdom of Italy. It was established as a service independent of the Royal Italian Army from 1923 until 1946. In 1946, the monarchy was abolis ...
'' and the '' Aeronautica Nazionale Repubblicana'' in 1943–1945. It was designed and built in Turin by
Fiat Fiat Automobiles S.p.A. (, , ; originally FIAT, it, Fabbrica Italiana Automobili di Torino, lit=Italian Automobiles Factory of Turin) is an Italian automobile manufacturer, formerly part of Fiat Chrysler Automobiles, and since 2021 a subsidiary ...
. The Fiat G.55 was arguably the best type produced in Italy during World War II,Ethell 1995, p. 65. (a subjective claim also frequently made for the Macchi C.205 ''Veltro'' as well as for the Reggiane Re.2005 ''Sagittario'') but it did not enter production until 1943,Jackson 2003, pp. 76–77 when, after comparative tests against the
Messerschmitt Bf 109G Due to the Messerschmitt Bf 109's versatility and time in service with the German and foreign air forces, numerous variants were produced in Germany to serve for over eight years with the Luftwaffe. Additional variants were produced abroad tot ...
and the
Focke-Wulf 190 The Focke-Wulf Fw 190, nicknamed ''Würger'' ("Shrike") is a German single-seat, single-engine fighter aircraft designed by Kurt Tank at Focke-Wulf in the late 1930s and widely used during World War II. Along with its well-known counterpart, th ...
, the Luftwaffe itself regarded the Fiat G.55 as "the best Axis fighter".Arena 1994, p. 23. During its short operational service, mostly under the ''
Repubblica Sociale Italiana The Italian Social Republic ( it, Repubblica Sociale Italiana, ; RSI), known as the National Republican State of Italy ( it, Stato Nazionale Repubblicano d'Italia, SNRI) prior to December 1943 but more popularly known as the Republic of Salò ...
'' insignia, after the 8 September 1943 armistice, this powerful, robust and fast aircraft proved itself to be an excellent interceptor at high altitude. In 1944, over Northern Italy, the ''Centauro'' clashed with British
Supermarine Spitfire The Supermarine Spitfire is a British single-seat fighter aircraft used by the Royal Air Force and other Allied countries before, during, and after World War II. Many variants of the Spitfire were built, from the Mk 1 to the Rolls-Royce Grif ...
,
P-51 Mustang The North American Aviation P-51 Mustang is an American long-range, single-seat fighter and fighter-bomber used during World War II and the Korean War, among other conflicts. The Mustang was designed in April 1940 by a team headed by James ...
, P-47 Thunderbolt and P-38 Lightning, proving to be no easy adversary.Angelucci and Matricardi 1978, p. 234. Italian fighter pilots liked their ''Centauro'' but by the time the war ended, fewer than 300 had been built. By comparison, the Germans produced 35,000 Bf 109s.U.S. Strategic Bombing Survey, Aircraft Division Industry Report, Exhibit I – German Airplane Programs vs Actual Production.


Design and development

By 1939, all the main Italian aircraft factories had begun designing a new series of monoplane fighter aircraft, using inline engines as opposed to the radial engines that powered the first generation Italian monoplane fighters used in the early years of World War II (fighters such as the
Fiat G.50 The Fiat G.50 ''Freccia'' ("Arrow") was a World War II Italian fighter aircraft developed and manufactured by aviation company Fiat. Upon entering service, the type became Italy’s first single-seat, all-metal monoplane that had an enclosed co ...
and the
Macchi C.200 The Macchi C.200 Saetta (Italian: "Lightning"), or MC.200, was a fighter aircraft developed and manufactured by Aeronautica Macchi in Italy. Various versions were flown by the ''Regia Aeronautica'' (Italian Air Force) who used the type throughou ...
). This process saw the first generation radial-engined fighters re-equipped with the Italian-built copy of the Daimler-Benz DB 601 engine, the so-called ''Serie'' 1/2, whose most prominent representative was the
Macchi C.202 The Macchi C.202 ''Folgore'' (Italian "thunderbolt") was an Italian fighter aircraft developed and manufactured by Macchi Aeronautica. It was operated mainly by the '' Regia Aeronautica'' (''RA''; Royal (Italian) Air Force) in and around the S ...
''Folgore'' (which was an aerodynamically revised Macchi C.200- also known as Macchi C.201 - with an inline V-12 instead of a radial engine). Aircraft in this series were given alphanumeric designations ending in the number "2". However, the process didn't stop, and already in 1941, designers shifted their attention on the new, larger and more powerful ''Fiat RA.1050'', a license-built copy of the Daimler-Benz DB 605. Aircraft powered by this new engine became the "Serie 5", and all had alphanumeric designations ending in the number "5" (
Macchi C.205 The Macchi C.205 ''Veltro'' ( it, Greyhound) (also known as MC.205, "MC" standing for "Macchi Castoldi") was an Italian World War II fighter aircraft built by the Aeronautica Macchi. Along with the Reggiane Re.2005 and Fiat G.55, the Macchi C.2 ...
, Reggiane Re.2005, Fiat G.55). Fiat designer
Giuseppe Gabrielli Giuseppe Gabrielli (26 February 1903 – 29 November 1987) was an Italian aeronautics engineer. He is famous as the designer of numerous Italian military aircraft, including the Fiat G.50 Freccia and G.55 World War II fighters. He was born in C ...
, while experimenting a new version of his
Fiat G.50 The Fiat G.50 ''Freccia'' ("Arrow") was a World War II Italian fighter aircraft developed and manufactured by aviation company Fiat. Upon entering service, the type became Italy’s first single-seat, all-metal monoplane that had an enclosed co ...
fighter, equipped with the DB 601, started a new design that was to be powered by the DB 605. The first G.55
prototype A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototyp ...
flew on 30 April 1942,Green 1961, p. 167. piloted by commander Valentino Cus, immediately showing its good performance and flight characteristics. It was armed with one 20 mm
MG 151/20 cannon The MG 151 (MG 151/15) was a German 15 mm aircraft-mounted autocannon produced by Waffenfabrik Mauser during World War II. Its 20mm variant, the 20 mm MG 151/20 cannon, was widely used on German Luftwaffe fighters, night fighters, figh ...
with 200 rounds of ammunition, installed in the forward fuselage and firing between the cylinder banks, exiting through the
propeller A propeller (colloquially often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon ...
hub. In "''Sottoserie'' O" airframes, there were also four 12.7 mm (.5 in)
Breda-SAFAT Breda-SAFAT (''Società Italiana Ernesto Breda per Costruzioni Meccaniche / Breda Meccanica Bresciana'' - ''Società Anonima Fabbrica Armi Torino'') was an Italian weapons manufacturer of the 1930s and 1940s that designed and produced a range of m ...
machine guns; two in the upper engine cowling, and two in the lower cowling, firing through the propeller arc, with 300 rpg. This layout soon proved to be troublesome, both for rearming and for the servicing of the lower cowling mounted machine guns: for this reason, the two lower machine guns were removed, and replaced with a 20 mm MG 151/20 in each wing, in the later production series, the ''Serie'' 1 (for a total of three cannon and two 12.7mm machine guns, although this varied; some had machine guns in the wings instead of cannon). The prototype flew to Guidonia, where it was put into trials against the other fighters of the so-called ''Serie'' 5:
Macchi C.205 The Macchi C.205 ''Veltro'' ( it, Greyhound) (also known as MC.205, "MC" standing for "Macchi Castoldi") was an Italian World War II fighter aircraft built by the Aeronautica Macchi. Along with the Reggiane Re.2005 and Fiat G.55, the Macchi C.2 ...
V ''Veltro'' and the formidable Reggiane Re.2005 ''Sagittario'', all of them built around the powerful, license-built Daimler-Benz DB 605 engine. The trials showed that the ''Centauro'' was the 2nd best performer overall, and it won the tender set by the ''Regia Aeronautica''. The C.205V was good at low and medium altitudes, fast and with good diving characteristics but its performance dropped considerably over 8,000 m (26,250 ft), particularly in handling. The Re.2005 was the fastest at high altitudes and best in dogfights, but suffered from a vibration which turned out to be a balance problem. This was corrected, but was still the most technically advanced, intricate, and therefore time-consuming of the three to produce, which made it unattractive at that stage of the war. The G.55 was chosen for mass production, along with the C.205. The G.55 prototype reached 620 km/h (390 mph), fully loaded, and without using WEP ( war emergency power), at 7,000 m (22,970 ft). This was a little less than expected, but it had a strong airframe and was the best aircraft regarding handling and stability at every altitude. The only negative assessment noted by G.55 pilots was the pronounced left-hand yawing at takeoff due to the powerful engine torque. This was partially remedied by a slight offset positioning of the vertical stabilizer to counteract engine torque. By early 1943, increased Allied bombing raids over Italy had showed that there was no suitable high-altitude fighter to deal with them effectively. The Macchi C.202's performance decreased above 8,000 m (26,250 ft), the typical altitude of the bombers and its light armament of two 12.7 mm (.5 in) and two 7.7mm (.31 in) machine guns was hardly adequate to bring down heavy bombers. Of the ''Serie'' 5 fighters, the ''Centauro'' showed the best high-altitude performance, due to its large wing surface area. Also its powerful armament, along with the generous ammunition supply (the G.55 had 250 rounds of 20 mm ammunition in the centerline cannon as opposed to 120 rounds in the Re.2005) standardized in the production ''Serie'' I, was sufficient to bring down US heavy bombers. The ''Regia Aeronautica'' commissioned the production of 1,800 G.55s, later raising that number to 2,400.Green and Swanborough 1974, p. 238. A pre-production series of 34 examples was ordered: these aircraft were mostly based on the prototype, with minor changes to improve its flying characteristics. They had a different weapon layout, as stated above, with the two lower cowling machine guns moved into the wings. Only 19 of the 34 commissioned aircraft were built, and six of them were converted to the ''Serie'' I standard at the factory. The production version, named ''Serie'' I, had the standard armament of three 20 mm MG 151/20s and two 12.7 mm (.5 in) Breda-SAFAT machine guns, plus two underwing
hardpoint A hardpoint is an attachment location on a structural frame designed to transfer force and carry an external or internal load. The term is usually used to refer to the mounting points (more formally known as a weapon station or station) on the ...
s, allowing it to carry either two bombs (up to 160 kg/350 lb), or two drop tanks (100 L/26 US Gal). At the date of the Armistice, 8 September 1943, 35 G.55s of all ''Series'' had been delivered, including three prototypes. Of these, only one was flown to South Italy to join the Italian Co-Belligerent Air Force (a second G.55, ''MM.91150'', was obtained by the Allies in summer 1944, when test pilot, Serafino Agostini, defected with an escaped British
POW A prisoner of war (POW) is a person who is held captive by a belligerent power during or immediately after an armed conflict. The earliest recorded usage of the phrase "prisoner of war" dates back to 1610. Belligerents hold prisoners of war ...
, an RAF officer, sitting on his knees. The aircraft was then taken on charge by the RAF and transferred to the
Central Fighter Establishment The Central Fighter Establishment was a Royal Air Force formation that dealt with the development of fighter aircraft tactics which was formed on 4 September 1944 at RAF Wittering. It also tested new fighter aircraft and equipment, and with the ...
of
Tangmere Tangmere is a village, civil parish, and electoral ward in the Chichester District of West Sussex, England. Located three miles (5 km) north east of Chichester, it is twinned with Hermanville-sur-Mer in Lower Normandy, France. The parish h ...
, Great Britain, on 17 March 1945, with the identification number VF204 applied, was put in the depot at Ford; its final fate is unrecorded.Sgarlato 2009, p. 44.Green and Swanborough 1974, p. 239.) From that date on, the ''Centauro'' served with the '' Aeronautica Nazionale Repubblicana'' (ANR), the air force of the new fascist state created in North Italy by Mussolini, with the assistance of the Germans. It still not exactly known how many "Centauros" were eventually requisitioned by the ''Luftwaffe'' or those acquired by ANR. About 18 aircraft were expropriated by the ANR while 12–20 (possibly as many as 42, according to some official reports) were requisitioned by the Germans. The Fiat factory, in Turin under German control, continued production for about six months. On 25 April 1944, Fiat factories were heavily bombed: 15 G.55s were destroyed, as well as some trimotor
Fiat G.12 The Fiat G.12 was an Italian transport aircraft of World War II. Design and development The G.12 was an all-metal low-wing Cantilever#Aircraft, cantilever personnel transport aircraft. It had three radial engines, one mounted on the nose and the ...
transports, BR.20 bombers, and
CR.42 The Fiat CR.42 ''Falco'' ("Falcon", plural: ''Falchi'') is a single-seat sesquiplane fighter developed and produced by Italian aircraft manufacturer Fiat Aviazione. It served primarily in the Italian in the 1930s and during the Second World Wa ...
LW biplane fighters ordered by the Luftwaffe. 164 "Centauros" had been completed, 97 of them being produced after the Armistice and delivered to the ANR. Following the advice of Rüstungs und Kriegsproduktion Stab (RuK), the German Control Commission, production was dispersed in small cities of
Monferrato Montferrat (, ; it, Monferrato ; pms, Monfrà , locally ; la, Mons Ferratus) is part of the region of Piedmont in northern Italy. It comprises roughly (and its extent has varied over time) the modern provinces of Province of Alessandria, ...
and production of parts were assigned to CANSA of Novara and AVIA in Vercelli. The parts were then assembled in Turin where the aircraft were to be flown by test pilots Valentino Cus, Rolandi, Agostini and Catella.Sgarlato 2009, p. 44-46. Production slowed markedly, and was stopped by the German authorities in September 1944.Green and Swanborough 1974, p. 261. A total of 148 G.55s were delivered to the ANR and, when the factory was captured, 37 more examples were ready, while 73 were still on the production line, in various degrees of completion.


Operational history

The first Centauro to see operational use was the third prototype. On 21 March 1943, the aircraft was assigned to 20° ''Gruppo'' (
squadron Squadron may refer to: * Squadron (army), a military unit of cavalry, tanks, or equivalent subdivided into troops or tank companies * Squadron (aviation), a military unit that consists of three or four flights with a total of 12 to 24 aircraft, de ...
), 51° ''Stormo'' ( wing) CT, based at Roma-Ciampino, for operational evaluation. In May, the G.55 followed the unit to Capoterra, near
Cagliari Cagliari (, also , , ; sc, Casteddu ; lat, Caralis) is an Italian municipality and the capital of the island of Sardinia, an autonomous region of Italy. Cagliari's Sardinian name ''Casteddu'' means ''castle''. It has about 155,000 inhabitant ...
having its baptism of fire on 5 June 1943, against Allied aircraft attacking Sardinia. The two first pre-production series flew, respectively, on 10 April and in May 1943. In early June they were assigned to ''353a Squadriglia ''( flight) ''CT'' based in
Foligno Foligno (; Southern Umbrian: ''Fuligno'') is an ancient town of Italy in the province of Perugia in east central Umbria, on the Topino river where it leaves the Apennines and enters the wide plain of the Clitunno river system. It is located so ...
, Umbria, were, until August, were transferred nine more aircraft.Sgarlato 2009, pp. 42–43. Pilots were delighted when they began to receive the new fighter in summer 1943.Gunston 1988, p. 253. In June, the first Serie I were assigned to ''Gruppo Complementare'' of 51° ''Stormo'' in Foligno, near Perugia, but in July the 11 G.55 of ''Gruppo Complementare'' were transferred to 353a ''Squadriglia'', that already had in charge the "pre-series" machines, to operate from Roma-Ciampino Sud airfield. The 353a ''Squadriglia'', commanded by ''Capitano'' Egeo Pittoni, flew many missions against the American bomber formations, but the flights were stopped when Rome was declared "Città aperta" ( open city). On 27 August, the ''Squadriglie'' 351a and 352a left Sardinia and arrived in Foligno to be re-equipped with G.55. But at the date of the 8 September the G.55 had not been delivered yet. During the first week of September, 12 ''Centauros'' had been assigned to 372a ''Squadriglia'' of 153° ''Gruppo'' in Torino-Mirafiori.Sgarlato 2009, pp. 42–44. On 8 September 1943, the date of Armistice, the ''Regia Aeronautica'' had received 35 G.55s. Only one of them flew to southern Italy, accepting the invitation of ''Maresciallo d'Italia'' Pietro Badoglio to surrender to Allied forces.


ANR service

There still is no exact data about the G.55's captured by the ''Luftwaffe'' or acquired by '' Aeronautica Nazionale Repubblicana''. About 18 G.55s were acquired by ANR while 12–20, or even 42, according to some reports, were requisitioned by the ''Luftwaffe''. The ''Centauro'' entered in service with the ANR; a decision was made to produce 500 G.55s, of which 300 were G.55/I and 200 G.55/II ''Serie'' II, armed with five 20 mm MG 151/20s and no machine guns (one in the centerline, two in the upper cowling, two in the wings). Only 148 were delivered to the ANR units that, as the number of available G.55s dwindled, were progressively re-equipped with the
Bf 109G Due to the Messerschmitt Bf 109's versatility and time in service with the German and foreign air forces, numerous variants were produced in Germany to serve for over eight years with the Luftwaffe. Additional variants were produced abroad tota ...
, of various sub-versions, even though Italian pilots preferred the G.55, with cancellation of production being extremely unpopular. The ANR had two ''Gruppi Caccia terrestre'' (fighter squadrons), the first was initially equipped with the
Macchi C.205 The Macchi C.205 ''Veltro'' ( it, Greyhound) (also known as MC.205, "MC" standing for "Macchi Castoldi") was an Italian World War II fighter aircraft built by the Aeronautica Macchi. Along with the Reggiane Re.2005 and Fiat G.55, the Macchi C.2 ...
, from November 1943 to May 1944, then, re-equipped with the G.55/I in June 1944 until it switched to the
Bf 109G Due to the Messerschmitt Bf 109's versatility and time in service with the German and foreign air forces, numerous variants were produced in Germany to serve for over eight years with the Luftwaffe. Additional variants were produced abroad tota ...
starting from November 1944. The 2nd ''Gruppo'' was the main unit equipped with the G.55, of which it had 70 examples from December 1943 – August 1944, before being progressively re-equipped with the
Bf 109G Due to the Messerschmitt Bf 109's versatility and time in service with the German and foreign air forces, numerous variants were produced in Germany to serve for over eight years with the Luftwaffe. Additional variants were produced abroad tota ...
. The first unit in ANR to be equipped with G.55 was the ', in November 1943, operating from Piemonte until 29 March 1944, when it was absorbed by the 1st ''Gruppo'' and transferred in Veneto. The 2nd ''Gruppo'' was formed at Bresso. It was initially commanded by Lt Col Antonio Vizzoto, and later by Lt Col Aldo Alessandrini.Neulen 2000, p. 81. It had three ''Squadriglie'' (the 4th, ''Gigi Tre Osei'', the 5th, ''Diavoli Rossi'', and the 6th, ''Gamba di Ferro''). The unit operated near Milan and Varese until April 1944, then it was transferred near Parma and Pavia, then again near the Lake Garda ( Brescia and Verona). At the end of May, the 2° ''Gruppo'' gave its G.55s to 1° ''Gruppo'' and re-equipped with 46 ex I./JG 53 and II./JG 77 Bf 109G-6/R6Neulen 2000, p. 81. With the ANR, the G.55s gave a good account of themselves against Allied fighters like the Spitfire and Mustang.Jackson 2003, p. 77.


German interest

In December 1942, a technical commission of the ''Regia Aeronautica'' was invited by the ''Luftwaffe'' to test some German aircraft in Rechlin. The visit was part of a joint plan for the standardization of the Axis aircraft production. In the same time, some ''Luftwaffe'' officers visited Guidonia where they were particularly interested in the performance promised by the ''Serie'' 5 fighters. On 9 December, these impressions were discussed in a ''Luftwaffe'' staff meeting and raised the interest of Hermann Göring himself. In February 1943, a German test commission was sent in Italy to evaluate the new Italian fighters. The commission was led by ''Oberst'' Petersen and was formed by ''Luftwaffe'' officers and pilots and by technical personnel, among them the ''Flugbaumeister'' Malz. The Germans also brought with them several aircraft including a Fw 190 A-5 and a Bf 109 G-4 for direct comparison tests in simulated dogfights. The tests began 20 February 1943 with the German commission very impressed by the Italian aircraft, the G.55 in particular. In general, all the ''Serie'' 5 fighters were very good at low altitudes, but the G.55 was also competitive with its German opponents in term of speed and climb rate at high altitudes, while still maintaining superior handling characteristics. The definitive evaluation by the German commission was "excellent" for the G.55, "excellent" for the Re.2005 although very complicated to produce, and merely "average" for the C.205. ''Oberst'' Petersen defined the G.55 "the best fighter in the Axis" and immediately telegraphed his impressions to Göring. After listening to the recommendations of Petersen,
Milch Milch is the German word for milk, and an old English word for a milk-producing cow. It is also the name of the following individuals: *Al Milch, American football coach *Ella Milch-Sheriff, Israeli composer *David Milch, American television write ...
and
Galland Galland is a surname. Notable people with the surname include: * Adolf Galland (1912–1996), German air general during World War II * Antoine Galland (1646–1715), French orientalist and archeologist; first European translator of The Arabian Nigh ...
, a meeting held by Göring on 22 February 1943 voted to produce the G.55 in Germany. German interest, apart from the good test results, derived also from the development possibilities they were able to see in the G.55 and in the Re.2005. Particularly, the G.55 was bigger and heavier and was considered a very good candidate for the new, significantly larger and more powerful DB 603 engine, which was considered too large to fit in the Bf 109's airframe. Other visits were organized in Germany during March and May 1943 in Rechlin and Berlin. The G.55 was again tested at Rechlin at the presence of Milch. Gabrielli and other FIAT personnel were invited to visit German factories and to discuss the evolution of the aircraft. The specifications of the German G55/II included the DB 603 engine, five 20 mm guns and a pressurized cockpit. The suggestion of weapons in the wings, limited to one 20 mm gun for each wing, originated the final configuration of the ''Serie'' I, while the DB 603 engine was successfully installed in what became the G.56 prototype. As a concrete expression of the German interest in the G.55, the ''Luftwaffe'' acquired three complete G.55/0 airframes (MM 91064-65-66) for evaluations and experiments providing three DB 603 engines and original machinery for the setup of other production line of the Italian copy of DB 605. Two of the ''Luftwaffe'' G.55's remained in Turin, at the ''Aeritalia'' plants, where they were used by German and Italian engineers to study the planned modifications and the possible optimizations to the production process. Later these two were converted to Serie I and delivered to the ANR. The third one was transferred to Rechlin for tests and experiments in Germany. The DB 603 engines were used to build the G.56 prototypes. The interest in the G.55 program was still high after the Armistice. In October 1943,
Kurt Tank Kurt Waldemar Tank (24 February 1898 – 5 June 1983) was a German aeronautical engineer and test pilot who led the design department at Focke-Wulf from 1931 to 1945. He was responsible for the creation of several important Luftwaffe aircraft of ...
, who previously personally tested a G.55 in Rechlin, and who had had nothing but praise for the aircraft, was in Turin to discuss G.55 production. However, events in the war and the not yet optimized production process were the reasons for which the G.55 program was eventually abandoned by the ''Luftwaffe''. Early production of G.55 required about 15,000 man-hours; while there were estimates to reduce the effort to about 9,000 man-hours, the well-practiced German factories were able to assemble a Bf 109 in only 5,000 man-hours. The DB 603 were instead to be used in Tank's own
Ta-152 The Focke-Wulf Ta 152 is a World War II German high-altitude fighter-interceptor designed by Kurt Tank and produced by Focke-Wulf. The Ta 152 was a development of the Focke-Wulf Fw 190 aircraft. It was intended to be made in at least three vers ...
C.


Torpedo fighter

The ''Regia Aeronautica'' frequently used torpedo bombers to air-launch torpedoes, such as the trimotor SIAI-Marchetti SM.79 ''Sparviero'' medium bomber. These had some success in the early war years, inflicting considerable losses on Allied shipping in the Mediterranean. By late 1942 the ageing ''Sparviero'' was facing continually improving Allied fighters and anti aircraft defences, leading to the Italian general staff exploring the idea of using well-powered, single-engined heavy fighters to deliver torpedoes – a concept known later as the " torpedo fighter". Such aircraft, based near the Italian coast, could potentially have an operational range of 300–400 km (190–250 mi), would be capable of carrying a 680 kg (1,500 lb) torpedo (a shorter and more compact version of a weapon carried by the SM.79) at relatively high speed, and would also be better able to evade enemy fighters and/or combat them on equal terms. While some consideration was given to adapting the G.55, Fiat began designing the G.57, a separate design powered by the 930 kW (1,250 hp) Fiat A.83 R.C.24/52 radial engine that was more capable of carrying a torpedo. Later, after the G.57 project was dropped, and given the ANR's continuing need for an aircraft that could replace the SM.79, the ANR engineers undertook the task of converting the ''Centauro'' for the torpedo attack role. A production G.55 (military serial number ''MM. 91086'') was modified to carry a 920 kg (2,030 lb), 5.46 m (17.91 ft) long torpedo. The
engine coolant An antifreeze is an additive which lowers the freezing point of a water-based liquid. An antifreeze mixture is used to achieve freezing-point depression for cold environments. Common antifreezes also increase the boiling point of the liquid, all ...
radiator Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in cars, buildings, and electronics. A radiator is always a ...
, normally a single unit positioned on the belly of the fuselage under the cockpit area, was divided into two units mounted under the wing roots (similar to the layout used on the Bf 109), gaining a 90 cm (35 in) space where two racks were mounted to carry the torpedo. The tailwheel strut was lengthened and equipped with a strengthened shock absorber to keep the tailfins of the torpedo from striking the ground, and a drag-reducing cowling was added in front of the tailwheel to minimize drag from the lengthened strut. The G.55/S shared the same gun layout as the G.55/I, with the three MG 151/20s and the two Breda-SAFAT machine guns. The aircraft, designated G.55/S, first flew in August 1944 and was successfully tested in January 1945, piloted by
Adriano Mantelli Adriano Mantelli (13 February 1913 – 6 May 1995) was an Italian aircraft designer who designed the Alaparma Baldo. Early life In 1929 Mantelli competed in flying competitions with aircraft that were self designed and built. In 1931 he starte ...
. Despite the cumbersome external load, performance was good and the handling acceptable. The ANR ordered a pre-series of 10 examples and a production series of 100 aircraft, but the conclusion of the war put an end to the project. The G.55/S prototype survived the war and, after being converted back to the ''Serie'' I standard, it became the first G.55 to be delivered to the newly formed ''
Aeronautica Militare Italiana , colours = , colours_label = , march = (Ordinance March of the Air Force) by Alberto Di Miniello , mascot = , anniversaries = 28 March ...
'' (AMI).


Fiat G.56

The Fiat G.56 was essentially a Fiat G.55 with a larger German Daimler-Benz DB 603 engine. Two prototypes were built, flight tests starting in March 1944. On 30 March, Commander Valentino Cus reached speeds of 690/700 km/h (430/440 mph). Official maximum speed was 685 km/h (426 mph) and the aircraft was armed with three 20 mm MG 151/20 cannon, one firing through the propeller hub, the other two installed in the wings.Green and Swanborough 1994, p. 210. Performance was excellent, the aircraft proving superior to both the Bf 109K and Bf 109G and Fw 190A, outmaneuvering Ethell 1995, p. 65. all types in testing. Production, however, was not allowed by the German authorities.


After World War II

In 1946, Fiat restarted production of the G.55, using the large stock of partly complete airframes and components remaining in its factories. It was available in two versions, the G.55A, a single-seat fighter/advanced trainer, and the G.55B, a two-seat advanced trainer, whose prototypes flew on 5 September 1946 and 12 February 1946 respectively. The AMI acquired 19 G.55As and 10 G.55Bs, while the Argentine Air Force purchased 30 G.55As, and 15 G.55Bs. In September 1951, units of the
Argentine Navy The Argentine Navy (ARA; es, Armada de la República Argentina). This forms the basis for the navy's ship prefix "ARA". is the navy of Argentina. It is one of the three branches of the Armed Forces of the Argentine Republic, together with the ...
and Army attempted a military coup against the government of
Juan Perón Juan Domingo Perón (, , ; 8 October 1895 – 1 July 1974) was an Argentine Army general and politician. After serving in several government positions, including Minister of Labour and Vice President of a military dictatorship, he was elected P ...
. The G.55s and the sole Argentine G.59 of ''Grupo 2 de Caza'' of the Argentine Air Force attempted to defect to the rebel forces, flying to the
Punta Indio Naval Air Base Punta Indio Naval Air Base ( es, link=no, Base Aeronaval Punta Indio, ) is a military airport operated by the Argentine Naval Aviation, located in the countryside northeast of Verónica, a town in the Buenos Aires Province of Argentina. The P ...
. The pilots were arrested on arrival and the aircraft immobilised, however, and took no further part in the revolt, which was defeated by Loyalist forces.Hagedorn 2006, pp. 131–132.


G.59

The production of these orders for G.55s for Italy and Argentina caused the available stocks of the Italian licence-built version of the DB 605 engine to run short. As there was still a demand for the aircraft, it was decided to convert the type to use the more readily available Rolls-Royce Merlin engine, with the first conversion flying in early 1948.Green and Swanborough 1994, p. 211. The conversion was successful, and the AMI decided to convert its G.55s to Merlin power, these re-entering service at the
Lecce Lecce ( ); el, label=Griko, Luppìu, script=Latn; la, Lupiae; grc, Λουπίαι, translit=Loupíai), group=pron is a historic city of 95,766 inhabitants (2015) in southern Italy. It is the capital of the province of Lecce, the province ...
flying school in 1950 as the G.59-1A and G.59-1B (single- and two-seat versions).Green and Swanborough 1974, p. 262.
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
placed an order for 30 similar aircraft, which by this time, were completely from new production as the stocks of G.55 components had been exhausted. Of these, 26 were single-seaters (designated G.59-2A) and the remaining 4 two-seaters (G.59-2B). A single G.59-2A was acquired by Argentina for evaluation, but no further orders followed from the South American republic. The final versions were the G.59-4A single-seater and G.59-4B two-seater, which were fitted with bubble canopies for improved visibility. 20 G.59-4As and ten G.59-4Bs were produced by Italy.


Variants

;G.55: 3 prototypes. ;G.55/0: 16 pre-production aircraft. ;G.55/1: Initial production aircraft. ;G.55/2: Bomber
interceptor Interceptor may refer to: Vehicles * Interceptor aircraft (or simply "interceptor"), a type of point defense fighter aircraft designed specifically to intercept and destroy enemy aircraft * Ford Crown Victoria Police Interceptor, a police car * ...
version. ;G.55/S: Torpedo attack aircraft variant. S for silurante meaning torpedo. ;G.55/A,B: Single-seat/twin-seat trainer versions, developed after the conflict. ;G.56: 2 prototypes with Daimler-Benz DB 603A engines. ;G.57: Version planned with A Fiat A.83 R.C.24/52 radial engine. ;G.59-1A: Rolls-Royce Merlin powered single-seat advanced trainers converted from G.55s ;G.59-1B : Rolls-Royce Merlin powered two-seat trainers converted from G.55s ;G.59-2A: 26, new production, Rolls-Royce Merlin powered single-seaters for
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
;G.59-2B: 4, new production, Rolls-Royce Merlin powered two-seat trainers for
Syria Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country loc ...
;G.59-4A: 20, new production, Rolls-Royce Merlin powered single-seaters for the
Aeronautica Militare Italiana , colours = , colours_label = , march = (Ordinance March of the Air Force) by Alberto Di Miniello , mascot = , anniversaries = 28 March ...
, fitted with bubble canopies. ;G.59-4B: 10, new production, Rolls-Royce Merlin powered two-seaters for the Aeronautica Militare Italiana, fitted with bubble canopies.


Operators

; * Argentine Air Force ; *
Royal Egyptian Air Force The Egyptian Air Force (EAF) ( ar, القوات الجوية المصرية, El Qūwāt El Gawīyä El Maṣrīya), is the aviation branch of the Egyptian Armed Forces that is responsible for all airborne defence missions and operates all milit ...
; * ''
Regia Aeronautica The Italian Royal Air Force (''Regia Aeronautica Italiana'') was the name of the air force of the Kingdom of Italy. It was established as a service independent of the Royal Italian Army from 1923 until 1946. In 1946, the monarchy was abolis ...
'' ; * '' Aeronautica Nazionale Repubblicana'' ; * Italian Air Force operated 74 Fiat G.59 retired in 1965Aerei Italiani
/ref> ; * Syrian Air Force


Specifications (G.55/I)


See also


References


Notes


Bibliography

* Angelucci, Enzo and Paolo Matricardi. ''World Aircraft: World War II, Volume I'' (Sampson Low Guides). Maidenhead, UK: Sampson Low, 1978. . * Arena, Nino. ''I Caccia Della Serie 5, Re2005, Mc205, Fiat G.G5'' (in Italian). Modena, Italy: STEM-Mucchi, 1976. . * Arena, Nino. ''Fiat G55 Centauro – Fiat G59''(in Italian). Modena, Italy: Mucchi Editore, 1994. * Beale, Nick, Ferdinando D'Amico and Gabriele Valentini. ''Air War Italy, Axis Air Forces from Liberation of Rome to the Surrender''. Shrewsbury, UK: Airlife, 1996. . * D'Amico, Ferdinando and Gabriele Valentini.''Pictorial History of the Regia Aeronautica Vol.2 – Pictorial History of the Aeronautica Nazionale Repubblicana and the Italian Co-Belligerent Air Force 1943–1945''. Carrollton, Texas: Squadron/Signal Publications, 1986. . * Di Terlizzi, Maurizio. ''Fiat G.55 Centauro'' (bilingual Italian/English). Roma, Italy: IBN Editore, 2001. . * ''Dimensione Cielo: Aerei Italiani nella 2° Guerra Mondiale, Caccia Assalto 3'' (in Italian). Rome: Edizioni Bizzarri, 1972. * Ethell, Jeffrey L. ''Aircraft of World War II''. Glasgow: HarperCollins/Jane's, 1995. . * Green, William. ''War Planes of the Second World War: Fighters, Volume Two''. London: Macdonald & Co. (Publishers) Ltd., 1961. * Green, William and Gordon Swanborough, eds. "Centaur – The Final Fling." '' Air Enthusiast International''. Volume 6, Number 5, May 1974, pp. 233–239, 261–262. * Green, William and Gordon Swanborough. ''The Complete Book of Fighters''. New York: Smithmark Publishers Inc., 1994. . * Gunston, Bill. ''The Illustrated Directory of Fighting Aircraft of World War II''. London: Salamander Books Limited, 1988. . * Hagedorn, Dan. ''Latin American Air Wars and Aircraft 1912–1969''. Crowborough, UK: Hikoki Publications, 2006. . * Jackson, Robert. ''Aircraft of World War II – Development – Weaponry – Specifications''. Enderby, Silverdale Books. 2003. . * Malizia, Nicola. ''Fiat G.59''. Roma, Italy: IBN Editore, 2004. . * Matricardi, Paolo. ''Aerei militari: Caccia e Ricognitori''. Milano: Mondadori Electa, 2006 * Mondey, David. ''The Hamlyn Concise Guide to Axis Aircraft of World War II''. London: Bounty Books, 2006. . * Nicolle, David. "Arab-Italian Fighters: Fiats and Macchis in Egyptian and Syrian Service 1948-1956". ''Air Enthusiast'', No. 55, Autumn 1994, pp. 32–36. * Sgarlato, Nico. ''I caccia della Serie 5''. Parma: Delta Editrice, 2009. * Sgarlato, Nico. ''Italian Aircraft of World War II''. Warren, Michigan: Squadron/Signal Publications, Inc., 1979. . * Thompson, Jonathan W. ''Italian Civil and Military Aircraft, 1930–1945''. Fallbrook, CA: Aero Publishers, 1963. * Vergnano, Piero and Gregory Alegi. "Fiat G.55." ''Ali D'Italia #10'' (in Italian/English). Torino, Italy: La Bancarella Aeronautica, 1998. * Winchester, Jim. "Fiat G.55 Centauro." ''Aircraft of World War II: The Aviation Factfile''. Kent, UK: Grange Books plc, 2004. .


Further reading

*


External links


Virtual G55 project

Fiat G.55 Centauro
{{Fiat aircraft 1940s Italian fighter aircraft World War II Italian fighter aircraft G.055 Single-engined tractor aircraft Low-wing aircraft Aircraft first flown in 1942