2.1. Land-based single-engine Fighters
2.1.1. Aigeanta 1T Croman (Harrier) – 1934
Thiaria’s first mass produced fighter aircraft was a very small biplane of indifferent performance, but supreme agility, which was originally developed around a naval specification for a fighter plane suitable to be carried by a rigid airship as organic escort component. The Navy, which never again commissioned any airships after 1918, nevertheless they ordered the plane in considerable numbers; despite its short range, the Croman was also used from Thiaria’s first operational aircraft carrier LT Antartach between 1935 and 1939 as a stopgap measure. Most of the production of 177 machines was never issued to combat units, but used as aerobatic trainers (the air force did not train such fancy stuff itself, but regularly sent its pilots to the navy’s aerobatics training unit). As an advanced trainer, the Croman remained in service till 1942.
2.1.2. Caproni Atlantach 4C Fabhcun (Falcon) – 1936
The Thiarian version of the Caproni Ca.114 was built only in limited numbers (90 machines) and flown by a single fighter wing between 1936 and 1940 without ever seeing action before being phased out and used for training. The type was however license-built in Peru (64) and Mexico (80), where it flew till 1943/4 in frontline units and was apparently well liked.
2.1.3. Aeraon 4A Seabhac (Hawk) – 1937
The main reason why the Fabhcun only ever saw a very limited production was the simultaneous availability of this aerodynamically very clean biplane which ranked among the best biplane fighters ever built, although it did not last as long in service as the comparable I-153 or CR.42. Although the Seabhac’s Hispano-Suiza 12X engine was slightly weaker than the Fabhcun’s radial, the Seabhac was both faster (420 versus 395 kph) and more maneuverable. 477 were produced, and the type saw exports to Argentina, Spain, Venezuela and – one of the very few sales of Thiarian equipment to middle and eastern Europe – Greece. Its use by the Greek Air Force in 1941 also made the Seabhac one of the few fighters to be employed by both sides during the war. In Thiaria, it equipped three fighter wings for some time before it was phased out from mid-1941. They were retired from operational units by mid-1942; by that time, they had seen only few combat sorties against the still very rare and ineffective British incursions into Thiarian Airspace, but still were considered effective and reliable. Planes of that type shot down 83 enemy aircraft between them and lost only 15; no other Thiarian fighter achieved such a kill ratio. Over 300 were handed down to training formations and remained in use throughout the war in ever-dwindling quantities.
2.1.4. Aigeanta 2T Clamhan (Buzzard) – 1938
Thiaria’s first shot at a monoplane fighter was exactly the failure it looked like. Slower than the biplane Seabhac and less maneuverable, the Clamhan failed to win any production contracts. Only three were built.
2.1.5. Aeraon 5A Cobra (Cobra) – 1940
The Tiharians took their time developing a worthy successor for their successful Seabhac biplane. Aeraon’s own entry into the competition was obviously influenced by the Dewoitine D.520 outwardly and initially had the same Hispano-Suiza 12Y engine; the plane was however larger, aerodynamically more refined and used notably larger wings. Internally the Cobra was better optimized for mass production than the D.520 (or any other Thiarian fighter, for that matter) and offered considerable growth potential. It was considered equal to its primary competitor, the Caproni Atlantach Iolar, in terms of performance (except range, where it was clearly better) and could be built at half the time for two thirds the cost. The Cobra was commissioned in 1940 to replace the Seabhac and eventually became Thiaria’s most produced aircraft type ever, with 4.061 built as Fighter and LIFT Aircraft (roughly 1/6 of production were two-seaters). The fighter version, which was exported to Argentina and Uruguay during the war, quickly established itself as a respected opponent for most allied airplanes. With their 1.100 or 1.200 hp Hispano-Suiza 12Y engines for speeds between 570 and 585 kph and their armament of one 20mm cannon and six 8mm Machineguns, they were nearly equal to the Spitfire II and superior to early P-40s or any version of the Hurricane. These fighters quickly became standard issue for Thiaria’s entire fighter force; only two of Thiaria’s eight day fighter wings were not equipped with them. After the first 900 had been delivered in 1942, the basic design was considerably improved to T6A-3 standard by installing a 1.600hp Hispano-Suiza 12Z-17 engine. Airframe and engine quickly turned out to be a match made in heaven, with a top speed of 665 kph easily achieved. As the war progressed, uprated versions of the 12Z – first the 12Z-34 with 1.750 hp, then the 12Z-43 with 1.900 hp – were installed, increasing top speed to 685 and 710 kph, respectively. The 12Z-34 powered machines (T6A-7, introduced late in 1943) replaced their six wing mounted 8mm machineguns with four 13mm guns, and the 12Z-43 powered fighters (T6A-10, in service from late 1944) added two more 13mm guns, bringing the total back to six, which gave them most impressive firepowerby anyone’s standards. These fighters were still competitive with the latest foreign types when the war ended; a version with the 2.050hp 12Z-60 (T6A-12) did not make it into series production anymore due to reliability issues of the engine which stretched the 12Z’s growth potential a little beyond its natural limit. A navalized version T6A-6 was considered, but not realized due to the weakness of the main landing gear, which could not be strengthened without a major redesign of the middle wing; it was also found that the wooden parts of the airframe could not easily be made saltwater-proof because the used wood glue reacted chemically with the anti-salt paint. Despite this small hiccup, the Cobra remains Thiaria’s most famous fighter of the Second World War, which was in action everywhere Thiarian forces fought and always gave a good account of itself. Although not as maneuverable as the Spitfire, late editions of these fighters could climb and dive with most contemporary allied fighters (except late Tempsts and Thunderbolts) due to their very good power-to-weight ratio; they could exceed 900 kph in a steep dive without major structural problems. They were clearly superior to every contemporary variant of the P38, P39, P40 and P63, and they performed irritatingly well against even the latest Mustangs; they only found their masters in the P51H and the Griffon-Spitfire. If you count only air-to-air combat, the Cobra achieved a favourable kill ratio of 3,6:1; if all kills and reasons of loss are factored in, the ratio drops to 1,4:1 due to many of them being destroyed on the ground late in the war. Cobras destroyed 70% of all airplanes killed in midair by Thiarian aircraft, and the top 10 Thiarian Aces all flew the Cobra for most, if not all their career, including Thiaria’s ace of aces, Maj. Padraig Coltraine with 88 confirmed kills. The Cobra was also widely used as a fighter-bomber in 1944, when many pilots refused to fly the structurally unsound Ollpheist planes of the light bomber wings and several hundred T6A-3 and -7 Cobras were made available to them; these machines received wing pylons for up to 750 kilograms of ordnance (typically, two 100mm rocket quadpacks, four 170kg bombs or or two 340kg bombs). In addition to the 4.021 fighters, fighter-bombers and fighter-trainers, there were several hundred photo-recce airplanes – all of them with 12Z engines – which have a separate entry below.
2.1.6. Caproni Atlantach 9C Iolar (Eagle) – 1940
Thiaria’s only other mass-produced land based fighter design besides the Cobra was based upon the Italian Caproni-Vizzola F-Series, which the Thiarians mated to a Hispano-Suiza 12Y engine of 1.100 (from 1941 1.200) hp. The combination worked well, and the resulting fighter offered performance comparable to the Cobra in most respects except range.Maneuverability however was rated slightly superior, and flight characteristics were reported as more docile and pleasant by most pilots. Armament was weaker, with only two 8mm machineguns supplementing the single 20mm cannon, but the main drawback was the complicated construction method based on Italian pre-war practice which cared little for the necessities of mass-production. Although the Thiarian government kept ordering Iolars and approved upgrades – mostly as a precaution should Cobra production run into difficulties – the type never achieved the Cobra’s ubiquity. The initial version – which was named Iolar Firean (Stone Eagle) and was capable of 570 respective 590 kph – was only built in 280 copies and equipped a single fighter wing. When the Hispano-Suiza 12Z-17 was fitted to the Iolar in mid-1942, the accompanying changes in structure (including a switch to an all-metal fuselage) were sufficiently comprehensive to warrant a new name, and the 12Z-equipped machines, which also replaced the 8mm guns with 13mm ones, were named Iolar Rioga (literally Royal Eagle, actually referring to the Harpy Eagle, of which considerable populations are native to Thiaria). Depending on which version of the 12Z was installed, the Iolar Rioga achieved top speeds of 670 kph (T9C-3 with 1.600hp 12Z-17), 695 kph (T9C-5 with bubble canopy and 1.750hp 12Z-34) and 720 kph (T9C-7 with 1.950hp 12Z-43). Production of all versions totaled 1.054; there was no photo-recce version. Also unlike the Cobra, the Iolar was never used by any expeditionary forces, but limited to home defence; in the day interceptor role, their somewhat austere armament proved quite a hindrance, although they were at their best when dealing with escort fighters. Remarkably, the Thiarians managed to ship a total of 60 to Peru in the middle of the war, where the type was also license-produced (125 units not counted in the total below) and flown till 1958 in combat and training roles.
2.1.7. Aerelar 4L Saighduir (Archer) – 1944
With the Cobra and the Iolar in full production, both of which displaying considerable growth potential in terms of engine power, development of new land-based fighters with piston engines enjoyed very low priority during the war. The Thiarian Air Force was aware as early as 1942 that the future belonged to jet propulsion. The Navy however still felt a need for piston-engined fighters due to the short range typically associated with early jet aircraft. Aerelar had started to develop a high-powered carrier-based fighter (Aerelar 5L Siolpaire, see below) with the 2.150hp Trenhaile 18T engine in 1943, but ran into trouble when even this big powerplant proved unable to deliver the specified performance; an improved turbosupercharged 2.500hp version of the 18T however had run into development delays and ultimately could not be made available prior to mid-1945. With their production facilities sitting idle and the prospect of being ordered to license-build other people’s aircraft and close down their design department, Aerelar embarked on a crash programme to build a land-based high-performance piston-propelled fighter which nobody had ordered and for which there was no defined requirement. They had acquired the plans for the Italian Reggiane Re.2005 Sagittario in 1943 and adapted them to the 1.900hp Hispano-Suiza 12Z-43 which entered series production in mid-1944; they also strengthened the structure and added a bubble canopy. The result was a fighter that outperformed not only both existing Thiarian standard fighters, but also pretty much everything the Allies had to offer; the Saighduir, as the plane was called by literally translating the Italian ‘Sagittario’, was one of only two axis fighters with piston engines that could fight an early Griffon-Spitfire on even terms, and it became available half a year earlier than the other one, the Focke-Wulf Ta152C. It featured a top speed of 725 kph, had three 20mm cannon and maneuvered like a devil. Although there was no chance that this plane could ever replace the Cobra, whose series-production was humming at full steam in 1944, Aerelar was allowed to build as many of them as possible until the Siolpaire became ready for production. This resulted in a very limited production run of 114 machines between late 1944 and early 1945. These planes were assigned to three squadrons serving with three different wings, all of which were tasked with home defence; although they made quite an impression and caused some losses among allied bombers, by that time it was too late and most of them were destroyed on the ground.
2.1.8. Caproni Atlantach 14C Tintreach (Lightning) - 1944
Thiarian Aircraft industry had begun to concentrate on jet fighters early in 1943; at that point, all work on follow on piston engined day fighters ceased with only few exceptions where range was considered a paramount requirement. Caproni Atlantach devoted considerable effort to the design of the smallest-possible airframe capable of accepting the TDA (Tuirbadinimice Aonta / United Turbodynamics) RT1A axial turbojet of 7,5 kN thrust then under development. Despite its superficial similarity with the Jumo 008, this engine was an all-Thiarian development, although some of the project-leading engineers had worked in Germany before the war. The plane, which sported a quintessentially Caproni-like appearance, like a scaled down CC.1, had its maiden flight in August 1944 and was immediately accepted for series production. Capable of 830 kph and armed with two 20mm cannon, the Tintreach seemed an ideal home-defence interceptor at that time; it was no true multi-role plane like the Me262, but more like a Thiarian version of the He162 with an emphasis on ease of construction and handling. Unlike the He162, the latter objective was actually met; the Tintreach was pleasant and rather forgiving to fly, if mechanically not very reliable due to ongoing teething troubles with the engine. Series production commenced in December 1944, with the first series aircraft commissioned in March 1945. When the war ended, the 46 completed Tintreachs equipped a single full squadron, and over 300 uncomplete airframes were at various stages of assembly.
2.1.9. Aeraon 10A Nathair (Serpent) – 1945
Although the advantages of jet aircraft were fully acknowledged by the Thiarian Air Force, there was one thing jet aircraft of the 1940s could not do, which was to fly long-range missions. Alle early jets were fuel hogs and not capable of hauling large loads of fuel and still perform properly. When Thiaria’s bombing offensive against Brazil and South Africa was in full swing in 1943, but faced with increasing opposition, a specification for an ultra-long range escort fighter went out. Two designs were submitted, one by Aeraon and one by Nairn. While the Nairn design adhered to the traditional twin-engined destroyer concept, Aeraon developed a very large plane with a single Hispano-Suiza 24Z-1 engine of 2.800 hp driving contra-rotating airscrews. The 24Z consisted of the cylinder blocks of two 12Z-34s welded to a common crankshaft and governed down a little to avoid overheat problems; like most engines of that sort (the most infamous being the Daimler-Benz 606/610 and the Rolls-Royce Vulture) the concept did not work very well and the engine remained troublesome and prone to overheat till it was too late. Consequently, the Nairn design was chosen as future long-range escort fighter and only 5 Nathairs were ever built.
2.1.10. Aigeanta 5T Tearatoirn (Thunderbird) – 1945
Thiaria’s most advanced jet fighter design that actually managed to become airborne during the war was this twin-engined aircraft that looked a little like the Bell P-59, although with smaller wings and a more refined aerodynamic shape. At 180% the weight, but 200% the engine-power of the Tintreach, the Tearatoirn was the fastest Thiarian fighter during the war, but only two prototypes were built, and the first flight occurred as late as February 1945. With its two newly developed 30mm cannon, its speed of 880 kph and its responsive controls, the Tearatorin would certainly have made a powerful weapon had it come earlier; it left a lasting mark however by providing the basis for Thiaria’s first postwar jet trainer, which was produced between 1958 and 1963 and flown till replaced by Alpha Jets in the early 1980s.
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GD