2.4. Land-based Bombers
2.4.1. Caproni Atlantach 3C Stail (Stallion) – 1935
The first standard-issue medium bomber of the newly formed Thiarian Air Force was a variant of the Italian Ca.133. It was a robust, reliable and easily maintained plane of limited payload, even more limited performance and pathetically short range, so it was practically useless for an island nation a thousand kilometers away from the nearest enemy. It was nevertheless built in 345 copies due to an embarassing lack of alternatives. During the war, the Stail was only used for training and as an auxiliary transport; none were deployed abroad. A few lasted throughout the war in supporting roles, often as squadron hacks for various bomber formations; most were retired during 1942.
2.4.2. Aeraon 5A Saighead (Arrow) – 1938
The first modern tactical bomber of the Thiarian Air force was developed from 1936 to 1938 as a torpedo-bomber floatplane. With two Hispano-Suiza 14AA engines of 1.100hp each, they were well-powered and showed convincing performance, although the engines were unreliable and needed a lot of maintenance. The type was nevertheless produced in considerable quantity both as a land airplane (418) and as a floatplane (165) and used in an anti-shipping role by both the Air Force and the Navy from the beginning of the war until well into 1944, when enough CSCA Tornadoes in the torpedo bomber version were available. Due to the inherent design faults of the Aigeanta Ollpheist and the pressing need of the expeditionary forces operating on the South American continent for more tactical strike aircraft, the last 208 of the land-based version were finished without anti-shipping equipment and with Hispano-Suiza 12Y-89 engines of 1.200hp; they were popular and successful in their role and served in diminishing numbers throughout the war, because the delivery of more modern replacements was delayed by the growing need for night-fighters. A total of 583 of the bomber version were produced.
2.4.3. Caproni Atlantach 7C Cloiteoir (Conqueror) – 1939
The Thiarian version of the Italian Caproni Ca.135. Although looking promising on paper, they fell short of advertised performance in every respect. They were intended to replace the Stail as standard medium bomber, but drawn out of active units quickly. Most were used in auxiliary roles throughout the war, and 40 of the 115 Thiarian-built machines were exported to Peru, where they saw a much more active service period. The Peruvians even built the type in license; although their version was as troublesome as the Thiarian or Italian incarnations, they eventually purchased 154 of them and used them for many years as their standard multirole bomber. The Peruvians also were the only ones who employed the Cloiteoir as torpedo bomber.
2.4.4. Nairn 2N Scriostoir (Devastator) – 1940
These medium bombers of rather uninspired outer lines were Thiaria’s first answer to the problem that all their enemies were half a hemisphere away and could not easily be reached and bombed. In a fashion similar to the Japanese Mitsubishi G4M (Betty), the 2N sacrificed everything for range, being relatively lightly built, having no self-sealing fuel tanks and mounting only few defensive weapons; bomb load was limited to 1.200 kilograms. With two 1.100 hp Hispano-Suiza 14AA engines, the Scriostoir had however the specified range of 2.500 kilometers and could reach most of the Brazilian coast from bases on New Portugal. After a prolonged development and testing phase, the Scriostoir was placed in series-production in mid-1940 and quickly replaced the Stail as Thiaria’s standard strategic bomber. During most of the time the Scriostoir was the mainstay of the heavy bomber wings, Brazil was not yet in the war, so the planes were mostly used not in the strategic role, but in long-range patrol, recce and anti-shipping missions; during 1941 and 1942, there also were some remarkable raids on Capetown, where the Scriostoirs used a makeshift airfield on the island of Craigmiadh and achieved a range of nearly 4.000 kilometers at maximum overload; these missions however proved a heavy burden for the flimsily built hulls, and attrition was very high. The poor reliability of the 14AA engines also led to many losses due to engine failure over open water. The Scriostoirs were considerably improved early in 1942 by replacing the 14AA with the Trenhaile (Gnome-Rhone) 14R-4/5 of 1.600hp; the additional power allowed the installation of better defensive armament (twin dorsal turret rather than single MG stand), increase payload to 1.600kilograms and make the fuel tanks self-sealing without compromising range and speed (which was however rather low to begin with at 420kph; the up-engined version was only good for 440kph). The last 389 Scriostoirs were built to this B2N-3 standard and remained Thiaria’s most important strategic bomber till early 1943. They finally were used for night missions against Brazil from mid-1942 and wreaked considerable destruction in that year, before night fighter resistance stiffended by early 1943 and the low speed, poor maneuverability and still not very robust construction turned the Scriostoir into a deathtrap for its own crews. Although in production till May 1943 to a total of 736 copies, the type was all but retired by year’s end.
2.4.5. Aigeanta 4T Ollpheist (Wyvern) – 1940
The Ollpheist was originally designed as a fast, unarmed bomber for precision strike missions from all altitudes. It was designed as an all-wood construction with a glued monococque hull very similar to the Mosquito, but at a much lower performance level, powered by two 930hp Hispano-Suiza 12Y engines. Maneuverability on the other hand was quite good for a plane of this size and weight. The basic version F4T-1 carried no defensive armament whatsoever, could pack 2.000 kilograms of ordnance and had a speed of 540kph with full load. Unfortunately, by the time the Ollpheist entered production in September 1940, this performance was already no longer sufficient to make it intercept-proof. As if this was not bad enough, the plane also proved incapable of attaining the specified ceiling at maximum load and – worst of all – was structurally unsound, with a tendency to lose the trailing wing and stabilizer during fast rolls. Unfortunately, the latter problem became only known when series production was already well underway, and the first 100 machines were wholesale declared not airworthy after an accident series in the winter (southern hemisphere) of 1941. Due to the perceived advantages of the Ollpheist, particularly its versatility, maneuverability and ease of production (minimal use of strategic materials, especially aluminium), it was decided to save the design by adding structural elements to stiffen the wing joints and a defensive armament of a bow mounted 13mm machinegun and a twin dorsal 13mm machinegun turret; the additional weight was addressed by installing two Hispano-Suiza 12Z-1s of 1.450hp each in the F4T-2 version. Although aerodynamics slightly suffered compared with the basic version, the added engine power still provided a speed of 585 kph at full load. This F4T-4 version replaced the F4T-1 bomber on the production lines in November 1941 and entered service in January 1942, just in time for the beginning of Thiaria’s South American land campaign in April. They were quite successful initially, as long as allied fighter resistance was feeble, but their structure was still basically – and, defying all attempts to strengthen it, irredeemably – faulty, and attrition and accident rates were high. An attempt to turn the Ollpheist into an effective tank hunter by installing a semi-automatic 47mm cannon failed miserably due to the stress damage this weapon did when fired; only two prototypes were built in 1943. By late 1943, though engine power had been further increased by installing the 1.600hp 12Z-17 in the F4T-5 for a speed of 625kph, Thiarian pilots were becoming quite uneasy flying low-level bombing missions in a plane which was strictly forbidden to enter any abrupt maneuvers to prevent it from breaking apart. The proposed replacement, the Aeraon Bultur, was not introduced before November 1944, and many Ollpheist squadrons converted to Cobra fighters modified for light strike missions in that year. Only a single light bomber wing operated the Ollpheist to the bitter end; its CO stated that a well-trained pilot could take the Ollpheist to the limit of its performance and all talk about structural deficiencies was only a half-assed excuse for not being able to fly the plane properly. He crashed to death without enemy interference in April 1945. By that time, only 70 of 557 produced Ollpheist bombers were still in service.
2.4.6. Caproni Atlantach 11C Bladhmiaire (Marauder) – 1941
Based upon the Italian Caproni Ca.204, which was rejected by the Regia Aeronautica in favour of the Piaggio P.108, this aerodynamically very clean plane eventually became the most successful, most feared and most produced heavy bomber of the entire Axis. The plans for the basic Caproni design were sent to Thiaria early in 1940 by submarine, and Caproni-Atlantach had a prototype ready by October 1940. They had deleted the lateral Me210-style remote-controlled machinegun mounts in favour of manned positions and installed a 20mm cannon in the tail for a total defensive armament of four 13mm machineguns and one cannon. The Alfa Romeo 135 engines proposed for the Ca.204 were replaced with Trenhaile (Gnome-Rhone) 14R-1/2s of 1.400hp, providing the designed speed of 500kph (less than the 515kph of the Ca.204 due to the higher weight of the Thiarian plane compared with the Italian version), and a maximum range of 3.600 kilometers (also less than the Italian version’s 4.500 kilometers). The bomb bay, which could only take 100kg bombs in the Italian original, was completely reworked to allow loading bombs of 170kg (20), 340kg (10) or 680kg (4) or any combination thereof. Designed bomb load was set at 3.500 kilograms internally, which was a great improvement over the 2.000 kilograms of the Ca.204. The Bladhmiaire could carry its full bombload at a combat radius of 600km and could still carry 1.600kg of bombs over her maximum combat radius of 1.400km plus reserves, plenty enough to hit half the population of Brazil from New Portugal. Series production commenced in May 1941, and the first squadron reported operational in November. These large aircraft were enthusiastically expected by the frontline units, who direly wanted a replacement for the flimsy Scriostoir, and over the next 12 months, four full wings converted to the Bladhmiaire. They operated practically with impunity during the first year of their service, both against Brazil and – occasionally – on raids against Capetown. As fighter resistance gradually stiffened, the Bladhmiaire was constantly upgraded. The B11C-3 of mid-1942 replaced the lateral MG positions with a twin dorsal turret, improving arcs of fire, and introduced the 1.600hp 14R-4/5, increasing speed to 520kph at the cost of cutting range to 3.200 kilometers (combat radius 1.200 kilometers); this was not considered a crucial drawback, because the Thiarians were operating from airfields on the South American continent at that time. The B11C-4 of mid-1943 utilized the additional engine power to mount a new bomb bay allowing for a payload of 4.000 kilograms, including the ability to carry the new rocket-assisted bombs internally (either four of 850kg or two of 1.700kg), and the ventral single MG position was replaced by a remote-controlled twin turret, increasing the number of MGs to 5 and again improving arcs of fire. Range remained the same due to an increase in size of the wing tanks; speed dropped slightly to 515kph. The final operational version B11C-5 introduced a bow-mounted twin MG turret to replace the single 13mm weapon, bringing the armament to six 13mm machineguns and one 20mm cannon. Otherwise, the B11C-5 resembled the -4 and had also the same speed; maximum payload was cut to 3.800 kilograms to compensate for the added weight and the additional crewmember. All versions except the -5 carried a crew of 7, which had one of 8 (the forward MG had been operated by the bombardier in previous versions, but the turret that replaced it had its own gunner). Due to the complicated operation of this semi-remote controlled turret (the gunner sat immediately abaft the turret in the nose and aimed through a system of mirrors), which considerably limited its usefulness, the B11C-5 never entirely replaced the -4, and the latter was generally considered the most satisfying variant. With 514 machines produced, it also was the most numerous. With 1.139 airframes delivered, the Bladhmiaire was the single most important aviation project in Thiaria’s war effort; roughly 15% of all manpower and resources devoted to military aircraft production were absorbed by this type. With its combination of speed and armament, it was hard to intercept throughout the war, although its service ceiling of 7.500 meters was not impressive; the Bladhmiaire was however capable of attaining 620kph in a shallow dive, which was a frequently employed tactic during night attacks late in the war, resulting in most enemy night fighters being left behind. By early 1944, the Bladhmiaire equipped all six heavy bomb wings of the Thiarian Air force. Combat losses were relatively low; most Bladhmiaires that were lost were destroyed on the ground in the final year of the war. They operated mostly during the day till mid-1943; then the Thiarianas switched to night missions for strategic bombing. Operational strength peaked at 310 planes in early 1944 and never dropped below 250 till early 1945. When the war ended, some 150 were still operational, and many more were in a damaged state which still allowed for repair. The Bladhmiaire was used in a multitude of missions, from strategic carpet bombing to tactical ground support to antiship missions (they could carry two torpedoes internally) and minelaying, and excelled in every role. Rejecting this plane could be considered a huge lost opportunity for Italy, because the Thiarian machines were superior in every respect to the P.108 and would probably not have fallen far behind their performance if fitted with Italian Piaggio P.XII engines of 1.500hp.
2.4.7. CSCA 5S Tornado (Tornado) – 1943
As the fighter versions of the Tornado had proven a huge success, the plane was a natural choice when the navy looked for a replacement for their ageing Saighead torpedo bombers. By 1943, it had become evident that the fleet’s carrierborne strike assets would never match those of the enemy numerically, and long-range land-based torpedo bombing acquired higher priority. The conversion of the Tornado to torpedo bomber was quickly done; it could either carry a standard 450mm aerial torpedo or a shortened version of the heavy 559mm torpedo, which however became available only in late 1944. As could be expected, the Tornado adapted very well to the torpedo bomber role and was used by one Air Force wing and four Naval Aviation flotillas till the end of the war; average operational strength was 170 planes, with 110 still operational when the war ended. They were particularly useful during the heavy fighting around New Portugal, where they were not only employed against ships, but also flew ground strike missions. Although they could not prevent the eventual loss of that archiple, they extracted a heavy blood toll from the British and Brazilians till the bitter end. 517 of the torpedo-bomber version were produced between 1943 and 1945.
2.4.8. Aeraon 7A Bultur (Vulture) – 1944
The main reason for designing a wholly new piston-engined plane like the Bultur during the war and devoting valuable resources to an intense testing programme, which otherwise could have been spent on additional production of already existing designs, was the urgent need to replace the Ollpheist as standard light bomber. The Tornado could fill the Ollpheist’s place as a fighter, but lacking an internal bomb bay, it was ill-suited for the light bomber role. Thus, the bomber version of the Bultur enjoyed maximum priority till mid-1944. Unfortunately, the Trenhaile 18T engine of 2.150hp took some time developing, and by the time the Bultur was finally ready for series production, priorities had shifted and night fighters were much more urgently needed than light bombers. Only slightly more than a third of the Bultur’s production were completed as light bombers and equipped one understrength wing by early 1945. Performance-wise, the Bultur was equal to such planes as the A26 Invader, the Tu-2 or the latest and most powerful Mosquito versions. They carried two 20mm cannon and four 13mm machineguns forward for strafing and one dorsal and one ventral twin 13mm turret for self-defence; bomb load was 1.800 kilograms, 1.200 of which could be carried internally. They were good for 600kph with full internal bomb load and had a range of 1.600km (combat radius 600km); the latter was not impressive, but for a purely tactical bomber not really necessary. Two dozens were fitted for torpedo-bombing in 1945 by adding one torpedo rack under each inner wing and replacing the ventral MG turret with a surface-search radar. They were commissioned with a single Naval Aviation flotilla in March 1945, but did not see combat any more.
2.4.9. Nairn 7N Teascadar (Executioner) – 1944
Although the Thiarians had an excellent heavy bomber in the shape of the Bladhmiaire, it was obvious by early 1943 that foreign developments would soon leave it obsolescent. A specification for a new heavy bomber capable of evading all existing and planned night-fighters (the Thiarians had always good intelligence about US developments provided by Irish-Americans and knew most details about the Northrop P61 Black Widow well before its maiden flight, and they had already collected some first-hand experience about what the Mosquito could do) was issued in January 1943. It called for a speed of 600kph at 10.000 meters, a range of 4.000 kilometers and a payload of five tons; a combat radius of 1.600 kilometers with half-load was also specified. Only Nairn, the Thiarian manufacturer with the most experience with very large planes, rose up to the challenge and presented a prototype in November 1943. The plane, which looked strikingly similar to the contemporary Heinkel He277, but had – German claims notwithstanding – no structural commonality with the German design, featured four 2.150hp Trenhaile 18T engines with turbosuperchargers, which were just sufficient for the specified top speed of 600kph at 10.000 meters. Range was 4.800km, for a combat radius of 2.000km with half load. The defensive armament consisted of six 20mm cannon in three well-placed twin turrets (one dorsal amidships, one in a chin position and one in the stern). The bomb bay could accept 6.000 kilograms of ordnance, and the Teascadar, as the plane was named after its first flight, was the only Thiarian airplane with the ability to carry Thiaria’s largest bomb, a monster of 3.400kg. A load of 2.800 kilograms – usually two 680kg bombs and eight 170kg bombs – could be carried to the maximum combat radius; at full load, combat radius decreased to 800km. The Teascadar had a crew of 7 and carried a ventral radar set which was primarily used to acquire threats approaching from below and direct the defensive armament. Another warning radar was installed on the inside of the vertical stabilizers; this one was used to aim the aft 20mm turret, which was fired by a gunner sitting in the hull directly forward of the turret. This system worked reliably, and the turret - although otherwise similar to the frontal turret of the latest Bladhmiaire - was considered much more satisfactory than the Bladhmiaire's frontal turret. The project was given top priority by mid-1943, and in December 1944, the first squadron reported operational. When the war was over, a full wing had been converted, and a few missions were already flown; with a bomb load of 2.000 kilograms and additional fuel tanks, a few specially converted, heavily overloaded planes managed to reach Capetown from Tir Parthas and return to Thiaria. Several such raids were flown until April 1945. Losses were very light; at the time of its introduction, the speed and ceiling of the Teascadar made it practically intercept-proof except by jets, and jet night fighters did not become available to the allies until after the war. All 50 planes still operational at the end of the war had to be scrapped forthwith under armistice conditions. All things considered, the Teascadar has to be rated the best heavy bomber of the axis (including the He277 and the Nakajima G8N), and among allied bombers was second only to the B29 in performance; its late arrival in limited numbers (total production 73 units) however denied this excellent design the chance to leave any discernible impact on Thiaria’s war effort.
Next: carrierborne bombers
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GD