The Curtiss-Willard Banshee Express of 1910 was designed on the specifications of Charles F. Willard and built by Curtiss.
The first flight of the Banshee Express took place at Mineola, N.Y., and established an American record by carrying 3 passengers (1200 lb gross) on August 14, 1910.
The second Curtiss tractor landplane, the Curtiss-Beachey biplane, was intended as an exhibition craft for Lincoln Beachey but, after a short flight, he rejected it as unsuitable.
Development of the Curtiss SC Seahawk began in June 1942, when the US Navy requested the company to submit proposals for an advanced wheel/float scout aircraft. An easily convertible landing gear configuration was required so that the aircraft could be operated from aircraft carriers and land bases, or be catapulted from battleships. The type was required to replace the rather similar Curtiss Seamew and Vought Kingfisher which stemmed from a 1937 role. The Curtiss Model 97 design proposal was submitted on 1 August 1942 but it was not until 31 March 1943 that a contract for two XSC-1 (Model 97A) prototypes was issued. An all-metal cantilever low-wing monoplane, the SC Seahawk had folding wings with considerable dihedral on their outer panels and strut-mounted wingtip stabiliser floats. The central float, which could also accommodate some auxiliary fuel, and the main wheeled landing gear units shared common attachment points. Power was a Wright R-1820-62 Cyclone 9 radial engine. The first prototype made its maiden flight on 16 February 1944, and was followed by 500 production SC-1 (Model 97B) aircraft which had been contracted from June 1943. All were delivered as land-planes, the stabiliser floats and Edo central float being purchased separately and installed as and when required by the US Navy. Delivery of production aircraft began in October 1944, the first equipping units aboard the USS Guam. A second batch of 450 SC-1s was contracted, but of these only 66 had been delivered before contract cancellation at VJ-Day. An improved version was developed, changes including the installation of a 1063kW R-1820-76 engine, a clear blown canopy, and a jump seat behind the pilot. The modified prototype, at first designated XSC-1A and then XSC-2 (Model 97C), led to a contract for similar production SC-2 (Model 97D), but only 10 had been delivered by the war’s end.
XSC-1 – Prototype Designation; two examples produced.
SC-1 – Initial Produciton Model Designation; 566 examples produced; introduced in 1944.
SC-2 – Improved two-seat SC-1; nine examples produced; appearing in 1946.
Curtiss SC-1 Seahawk Engine: 1 x Wright R-1820-62 Cyclone radial, 1,350 hp / 1007kW Wingspan: 12.50 m / 41 ft 0 in Length: 11.09 m / 36 ft 5 in Height: 3.89 m / 12 ft 9 in Wing area: 26.01 sq.m / 279.97 sq ft Wing load: 32.19 lb/sq.ft / 157.0 kg/sq.m Max. speed: 272 kt / 504 km/h / 313 mph Cruise speed: 201 km/h / 125 mph Maximum Range: 631miles (1,016km) Rate-of-Climb: 2,500ft/min (762m/min) Service Ceiling: 37,303ft (11,370m) Armament: 2 x 0.50 cal (12.7mm) fixed, forward-firing heavy machine guns. 2 x 100- or 250lb general purpose bombs held underwing. Crew: 1 Hardpoints: 2 Empty Weight: 6,321lbs (2,867kg) Maximum Take-Off Weight: 8,999lbs (4,082kg)
In late 1943 Curtiss received a US Navy order for two single-seat torpedo-bomber aircraft Model 96 prototypes under the designation XBTC-1 931401/314020. A low-wing monoplane with considerable dihedral on the outer wing panels, retractable tailwheel landing gear and a 2237kW Pratt & Whitney R-4360-14 Wasp Major engine and three-blade contrarotating prop, but before the first flew, a slightly different version of XR-4360-8A engine was installed in each aircraft, bringing the redesignation XBTC-2. Armament was four 20mm wing cannon. However, Curtiss was now in competition with Douglas, Fleetwings and Martin for this requirement, losing out to Douglas and Martin whose contenders were produced as the AD-1 Skyraider and AM Mauler respectively.
Curtiss XBTC-2
In March 1945 Curtiss gained a contract for 10 of the generally similar XBT2C-1. This Model 98 differed by having a lower-powered Wright R-3350-24 engine, reduced armament, accommodation for a crew of two and a search radar pod mounted beneath the starboard wing. Only nine of the 10 were built, and these were the last Curtiss-built aircraft for the US Navy.
96 / XBTC Engine: 2237kW Pratt & Whitney R-4360-14 Wasp Major Wingspan: 14.02 m / 45 ft 12 in Length: 11.51 m / 37 ft 9 in Height: 3.76 m / 12 ft 4 in Wing area: 34.84 sq.m / 375.01 sq ft Empty weight: 4 800 kg Useful load: 3963 lb Max. speed: 611 km/h / 380 mph Cruise speed: 180 mph Stall: 85 mph Ceiling: 28,000 ft Range: 2180 km / 1355 miles Seats: 1
98 / XBT2C-1 Engine: 1 x 1864kW Wright R-3350-24 radial Take-off weight: 8618 kg / 19000 lb Empty weight: 5565 kg / 12269 lb Wingspan: 14.50 m / 47 ft 7 in Length: 11.94 m / 39 ft 2 in Height: 3.68 m / 12 ft 1 in Wing area: 38.65 sq.m / 416.02 sq ft Max. Speed: 531 km/h / 330 mph Ceiling: 8015 m / 26300 ft Range: 2108 km / 1310 miles Armament: 2 x 20mm cannon, 907kg of bombs Seats: 1
On 30 June 1941, Curtiss received a prototype development contract for the XF14C-1 single-seat shipboard fighter designed around the 2,200hp Lycoming XH-2470-4 liquid-cooled engine.
At a relatively early stage in the programme, the unsatisfactory state of development of the Lycoming engine led to the redesign of the fighter to accept an 18-cylinder two-row Wright R-3350 as the XF14C-2, this engine driving a six-blade contraprop.
Powered by an XR-3350-16 rated at 2,300hp, and carrying an armament of four 20mm cannon, the XF14C-2 was flown for the first time in September 1943, but not delivered to the US Navy until July 1944.
Performance proved to be substantially below that specified and the prototype suffered excessive vibration. In consequence, further development of the XF14C-2 was abandoned.
The Curtiss XP-62 was the final propeller-driven fighter built by Curtiss and its dimensions were exceeded only by the Boeing XF8B naval fighter. The XP-62 was ordered by the USAAF on 27 June 1941 with the 1715kW Wright R-3350 radial engine.
Curtiss XP-62 Article
Initial plans called for delivery of one XP-62 and one XP-62A and later for 100 production P-62 fighters, but it was clear almost from the beginning that the design was overweight, underpowered, and an uneconomical alternative to continued Curtiss production of the P-47G Thunderbolt.
Because it would be an effective testbed for dual-rotation propellers and a pressurized cabin, it was decided on 18 July 1942 to proceed with a sole airframe, the remaining machines on order being cancelled. Development of the XP-62’s cabin pressurisation system was delayed and the aircraft did not fly until early 1944. By then even the XP-62’s value as a test ship was marginal and the programme was terminated after a few hours’ flying time.
Engine: 1715kW Wright R-3350 radial Max take-off weight: 6640 kg / 14639 lb Empty weight: 5340 kg / 11773 lb Wingspan: 16.36 m / 53 ft 8 in Length: 12.04 m / 39 ft 6 in Height: 4.95 m / 16 ft 3 in Wing area: 39.02 sq.m / 420.01 sq ft Max. speed: 720 km/h / 447 mph Ceiling: 10800 m / 35450 ft Range: 1140 km / 708 miles
The P-60 designation applies to a family of widely different Curtiss fighters, each reflecting the urgency of the builder’s unsuccessful effort to develop a P-40 replacement. Though only four airframes carried out the P-60 programme, no fewer than nine designations were involved: XP-60, XP-60A, YP-60A, P-60A, XP-60B, XP-60C, XP-60D, XP-60E and YP-60E. The programme ran from early 1941 to December 1944 and was Curtiss’s last gasp in the propeller-driven fighter field, an effort which involved several engines, propellers, and canopy configurations. Four XP-60 prototypes were flown with various engines, and designations.
The XP-60 was a low-wing, conventional-gear fighter developed from the uncompleted XP-53 but powered by a 969kW Packard V-1560-1 licence-built Merlin, determined by the USAAF to be the best engine available in 1941. This airframe flew on 18 September 1941. With all Merlin-related resources soon committed to the P-51 Mustang programme, the USAAF then decided to employ the 1062kW Allison V-1710-75 in planned production-model P-60s. On 31 October 1941, 1,950 such fighters were ordered. Soon, however, it became evident that Curtiss’ Buffalo, New York, plant could be more usefully employed building P-47G Thunderbolts and the contract was cancelled. Three XP-60A airframes were tested with the Allison powerplant before being re-engined. The proposed YP-60A, which would have had a 1491kW Pratt & Whitney R-2800-10 radial, was another variation which did not result in a finished airframe. The XP-60B was to have been the original machine with a shift from Merlin to Allison power but apparently this change was never made.
YP-60E
The XP-60C, converted in 1943 from one of the three Allison test ships, employed the R-2800 radial. This was the sole example tested with Curtiss Electric contra-rotating propellers. The XP-60D was the original machine retaining its Merlin but with enlarged tail surfaces and other minor changes. The XP-60E was another R-2800 radial-powered variant. Last in the series was the YP-60E, another conversion, again R-2800 radial-powered but now uncamouflaged and with bubble canopy, the result being formidable competition to the Curtiss P-40Q for the claim of most beautiful fighter ever built. In November 1942, the US Army ordered 500 Pratt & Whitney-powered P-60 fighters but the production contract was soon set aside in favour of other priorities. The P-60 programme ended by mid-1944, the last airframe being scrapped on 22 December 1944. In May 1944, Curtiss indicated to the AAF that it wished to abandon further work on the P-60 series fighters because of the disappointing results achieved with the XP-60C and XP-60E. Earlier, the P-60 had been eliminated from the production schedules, the number of aircraft on contract having been reduced to two. However, the AAF insisted on completion of one of the two aircraft still on order. These, originally ordered as YP-60As, had been redesignated as YP-60Es because the design modifications incorporated were most directly descended from the XP-60E. The YP-60E differed principally in having a 2,100hp R-2800-18 engine, a deeper cowling incorporating the ventral cooler intake, a cut-down rear fuselage and a bubble-type cockpit canopy. The sole YP-60E completed was flown on 13 July 1944, but only one further flight was made before the aircraft was transferred to Wright Field where it was eventually disposed of without further testing. Armament comprised six wing-mounted 12.7mm machine guns.
XP-60C Engine: Pratt & Whitney R2800. Prop: Curtiss Electric contra-rotating. Take-off weight: 4770 kg / 10516 lb Empty weight: 3945 kg / 8697 lb Wingspan: 12.60 m / 41 ft 4 in Length: 10.39 m / 34 ft 1 in Height: 4.57 m / 14 ft 12 in Wing area: 25.55 sq.m / 275.02 sq ft Max. speed: 621 km/h / 386 mph Ceiling: 10900 m / 35750 ft Range: 990 km / 615 miles
XP-60D Engine: Packard Merlin V-1560-1, 969kW
XP-60E Engine: Pratt & Whitney R2800. Take-off weight: 4658 kg Empty weight: 3758 kg Wingspan: 12.60 m / 41 ft 4 in Length: 10.34 m / 33 ft 11 in Height: 3.81 m / 12 ft 6 in Wing area: 22.55 sq.m / 242.73 sq ft Max. speed: 652 km/h / 405 mph
The smallish XP-46 was to be the answer for the deficiencies encountered in the P-40 Warhawk. With production of the P-40 Warhawk in full swing, designers at Curtiss had sold the idea of a more powerful successor to the US Army Air Corps, to which two prototypes were ordered on 29 September 1939. The design was to be powered by an Allison liquid-cooled engine of 1,150 horsepower fitted into a small frame. Armament – proposed but never fitted to either prototype – was consist of eight 0.30 caliber machine guns mounted in the wings with an additional two 0.50 caliber systems in the nose. The US Army ordered one XP-46 and one XP-46A, the XP-46A without armament to expedite the testing programme. Both were powered by the 857kW Allison V-1710-39 inline engine. The XP-46A flew first on 15 February 1941 and both machines were being tested by the time of Pearl Harbor. The XP-46 and XP-46A had moderately good performance except for their limited range of 523km. They were heavier and costlier than the P-40D, however, and seemed to lack ‘stretching’ potential for further development. The two airframes were markedly different from each other in detail, especially in cockpit layout, the XP-46 being viewed by pilots as cramped and uncomfortable, a ‘sweatbox’.
By the time the second prototype had flown as the XP-46A, the aircraft was already showing clear signs of never matching even the P-40. The XP-46 proved to be slow-responding for a fighter and the 400mph speed was never close to being reached. The samples were later scrapped. The Curtiss XP 46 produced data which was made available to North American in the design of the P 51 Mustang.
XP-46 Engine: 1 x Allison V-1710-39, 1,150hp / 857kW Length: 30.18ft (9.2m) Wingspan: 34.45ft (10.50m) Height: 12.99ft (3.96m) Maximum Speed: 355mph (571kmh; 308kts) Maximum Range: 325miles (523km) Rate-of-Climb: 2,000ft/min (610m/min) Service Ceiling: 27,999ft (8,534m) Crew: 1 Hardpoints: 0 Empty Weight: 5,624lbs (2,551kg) Maximum Take-Off Weight: 7,663lbs (3,476kg)
XP-46A Engine: 1 x Allison V-1710-39, 1,150hp / 857kW Take-off weight: 3320 kg / 7319 lb Empty weight: 2550 kg / 5622 lb Wingspan: 10.46 m / 34 ft 4 in Length: 9.19 m / 30 ft 2 in Height: 3.96 m / 12 ft 12 in Wing area: 19.32 sq.m / 207.96 sq ft Max. speed: 571 km/h / 355 mph Ceiling: 8990 m / 29500 ft Range: 523 km / 325 miles
In response to a US Navy (USN) pro¬posal for a new dive bomber, Curtiss came up with its Model 84. From half a dozen designs submitted, those of Brewster and Curtiss were considered most suitable, both incorporating the new 1700 hp Wright R 2600 Cyclone 14 cylinder two row radial, conforming adequately with the Navy Bureau of Aeronautics specifica¬tion. Work on the design that would become the SB2C started in late 1938 and the US Navy Bureau of Aeronautics ordered a prototype, the XSB2C, on May 15,1939, and of the XSB2A1 (Brewster). However, before the prototype flew, the US Bureau of Aeronautics ordered 370 production models, designated SB2C 1. Named Helldiver, the aircraft turned out to be possibly the most complex single engined aircraft developed for the USN at the time. Its Wright R 2600 engine was reliable and proven, but the overall design was beset by design and systems problems.
The Helldiver was conceived as a mostly all-metal, low-monoplane wing design fielding a crew of two seated in tandem within a long cockpit – the pilot in the forward area and the tail gunner in the aft. The fuselage sported straight wings with a tapered trailing edge and rounded tips. The US Navy Helldiver was produced with a reinforced and retractable undercarriage as well as an arrestor hook for carrier operations. Ordnance could be held in the internal bomb bay (including a single torpedo) as well as along two underwing hardpoints. Standard armament included a pair of fixed forward-firing 20mm cannons (4 x 12.7mm heavy machine guns in earlier production models) in the wings and a pair of 7.62mm M1919 Browning air-cooled machine guns in the rear cockpit.
Curtiss and the Helldiver became the focus of several Congressional investigations, one being led by Harry Truman. Recommendations were made that production of the aircraft should be stopped or drastically curtailed because of seemingly insurmountable problems. Another major problem was that Curtiss did not have the production facilities to build its new aeroplane in quantity, so the USN erected a new factory at Columbus, Ohio, for that pur¬pose. As each problem was resolved, another appeared, but this did not deter the US Army from ordering the aircraft as the A 25. This contract was a direct result of the effectiveness of the Luftwaffe’s Junkers Ju 87 Stuka, and the army’s machines were to be constructed at the Curtiss plant in St Louis. However, as orders poured in for a range of variants, licensed pro¬duction was set up at the Canadian Car & Foundry and the Canadian Fairchild factories. Problems aside, the various factories would eventually deliver a total of 5,516 Helldivers, the last rolling off the production line in October 1945. The Curtiss design followed that of such predecessors as the P 40 Hawk and SBC Helldiver series, but had a short, stubby fuselage to comply with the stowage require¬ment. First flight of the prototype XSB2C-1 was made on December 18, 1940. During subsequent tests, excessive weight and positioning of the rear gun instal¬lations posed problems; the wing area had to be increased by nearly 10%, to 39.2 sq m (422 sq ft), to give adequate maximum lift; and the dive brakes were modified to reduce the excessive dive speed experienced during experimental flight tests. The prototype, powered by a Wright R 2600 8 of 1,700 hp, was plagued with problems. The prototype XSB2C 1 was badly damaged in a crash on February 9,1941, rebuilt and flying again by May 6 that year with numerous changes, and then completely destroyed in another crash on December 21 the same year. Production aircraft incorporated more than 800 changes including larger, self sealing fuel tanks, increased armour and a larger tail. Armament for the first 200 aircraft consisted of four 0.5in wing guns (later models had one 20mm cannon in each wing panel) and two 0.3in guns for the observer. The bomb bay could house a 1,00 lb bomb to be dropped in a steep dive slowed by the massive perforated wing flaps. Underwing pylons could carry depth charges or auxiliary fuel tanks. A production order for 370 SB2C 1s had been issued by the US Navy in November 1940, calling for deliveries to begin in December 1942, and from then onwards at a rate of 85 aircraft per month. By January 1941 the order had been increased to 578 machines; but matters were not improved when the prototype again crashed in December 1941, a fortnight after Pearl Har¬bor, due to wing and tail failure during a dive. This left the production team without a flight ¬test aircraft, but trials continued on mock¬ups and components, with improvements being made on the production design to include two 0.50 in (12.7 mm) guns (instead of one) in each wing, leakproof wing fuel tanks, plus cockpit and rear gun position armour plating. It seemed evident during 1941 that the initial delivery date would not be met, but the attack on Pearl Harbor in December 1941 provided the impetus to give the building programme top priority. Production flight testing began on June 30,1942 some six months behind schedule. The first four pro¬duction SB2C 1s were ‘hand built’ for further testing, with subcontractors being used to help accomplish the task in hand. New radar, IFF and radio installations were tested and approved, and in May 1942 1000 Helldivers were ordered from the Canadian Car and Foundry Company of Fort William, Ontario, Canada, 450 of which were ear¬marked for the Royal Navy in the UK. Armour, self-sealing tanks, protected fuel and oil lines, increased armament, a lengthened fuselage and a completely new tail unit with greatly enlarged fixed and moveable surfaces were incorporated in the production SB2C-1. The SB2C-1 (A-25) production version, 978 of which were built by Curtiss, was powered by a 1,267kW Wright R-2600-8 engine driving a three-bladed Curtiss Electric constant-speed propeller.
Between June 30, 1942 (the first flight of the first production SB2C 1) and December 1942, when the first aircraft were delivered to VS 9 Squadron, more testing for structural stabil¬ity and safe diving techniques had been carried out. Basic armament on initial pro¬duction SB2C-1s comprised two fixed, for¬ward firing 20 mm (0.79 in) cannon in the wings, a 0.50 in (12.7 mm) gun on a power-¬operated mounting in the rear cockpit, and a maximum internal bombload of 454 kg (1000 lb); powerplant was the 1700 hp Wright R-2600 8 radial. In December 1942, the first squadrons went aboard the new Essex class carriers but the aircraft were so deficient that they were declared non operational. Truman’s committee found the Helldiver “hopelessly behind schedule and that [by April 1943] Curtiss had not succeeded in producing a single SB2C usable as a combat airplane despite expensive self praise in advertising”. Curtiss lobbyists managed to secure further contracts and Curtiss engineers made constant redesigns. Two hundred Helldivers were built to this standard, but were still prone to arrester gear troubles, tailwheel collapse and other structural problems. After further stages in the modification programme, production of a further 778 aircraft took place under the designation SB2C-1C, with two 0.30 in (7.62¬mm) guns (on an improved mounting) in the rear cockpit, hydraulically operated wing flaps, and most of the earlier problems over¬come. This batch were fitted with non-retractable tailwheels and self sealing fuel tanks. On October 21, 1943, Squadron VB 17 aboard the USS Bunker Hill finally took the Helldiver into action when this carrier sailed to join the Essex and Independence in action against the Japanese at Rabaul harbour, New Guinea. Here, on November 11, with the loss of very few Helldivers, a considerable amount of damage was inflicted upon the enemy’s land based Zero squadrons and on shipping in the harbour. Up to November 1943, (when the Helldiver first went into action in the Pacific theatre of war) more than 880 design changes were made. Some were part of the Army-Navy standardisation programme to permit the production of an Army version of the Helldiver as the A-25, which later served with the Marine Corps. By the end of 1944 every large American carrier was equipped with a Helldiver bombing squadron. By the end of March 1944 the factory at Columbus, Ohio, had built 978 SB2C-1/-1Cs, and this included the XSB2C 2 which was fitted with huge Edo floats and intended for the Marines, delivered in 1943. The USAAF did not want the aircraft, and used them only as target tugs and for other mundane tasks. The next production version was the SB2C 3, of which 1112 were built with an uprated 1,416kW / 1900 hp R 2600 20 Cyclone engine and four blade propeller, deliveries starting in January 1944, and 1,112 examples of the SB2C-3 were produced This was followed by the SB2C-4, with the same powerplant, but capable of carrying eight 5 in (127 mm) rockets or another 454 kg (1000 lb) bombload under the wings. Some were equipped with radar and designated SB2C-4E, and a total of 2045 of the -4/4E versions were built. The subsequent 970 SB2C-5s had increased fuel capacity and were basically a long range variant of the -4E. During production, Curtiss and the USN strove to eliminate problems and improve the design. The ultimate production variant was the SB2C 5 (970 delivered, US Navy Bureau Numbers 83128 83751, 89120 89465), which had greatly improved combat effectiveness and APS 4 radar. Wing racks could carry an additional 1,000 lb of bombs or eight 5in high velocity aerial rockets. Handling characteristics were massively improved by perforating the dive brakes, while increased fuel capacity extended the type’s range.
SB2C-5
Nine hundred Helldivers built by Curtiss were purchased by the USAAF and given the Army designation A 25A Shrike. They were, however, used only for second line duties such as training and target towing, and 410 of them were transferred to the US Marine Corps in 1943 as SB2C 1As. Ten others were supplied to the Royal Australian Air Force.
A-25A Shrike
Canadian Car and Foundry was awarded a contract for 1,000 Curtiss SB2C Helldivers, designed to replace the Douglas SBD Dauntless. Iinitial development of this, the third Curtiss design to bear the name Helldiver, had begun in the US in 1939 and it was claimed that it would be capable of carrying a bigger bomb load, faster and farther than any other single engined dive bomber, but the aircraft was plagued by stability and structural problems. Both the prototype and the first production model suffered in flight structural failure and the first machines to go into service encountered so many problems that at least three major modification programmes were required before the type became acceptable. At Fort William one aircraft was destroyed and one damaged beyond repair during test flights. The first of the CanCar Helldivers, designated SBW, flew in July 1943 to be followed in August of that year by the first flight from an order of 300 Helldivers, designated SBF, which had been placed with Fairchild Aircraft in Quebec. The SBW was identical to those produced by Curtiss in the US being a single engined, two seat, monoplane dive bomber, capable of delivering a 1,0001b bomb load (the ‘dash numbers’ signifying similarity to the SB2C 1, 3, 4 and 5). It mounted two cannon in the wings and .50 machine gun in the aft cockpit. Apart from the fabric covered control surfaces, it was of all metal construction, with folding wings for aircraft carrier stowage and with dimensions designed to allow it to fit the standard carrier deck lifts. The SBW 1 was powered by a Wright R 2800 8 engine, but later variants were fitted with the R 2800 20 and had wing racks installed to bring the bomb load up to 2,0001b. The wings were also fitted with jettisonable fuel tanks and from the SBW 4 onwards had improved wing flaps and dive brakes installed. By the end of the war, when production was cancelled, CanCar had produced 833 of the original 1,000 ordered. This compares with a total of over 5,000 Helldivers produced in the United States. Almost all of the SBWs were delivered to the US Navy, but of the 450 original earmarked for the UK, 26 SBW 1s actually reached the Fleet Air Arm under Lend Lease in 1944, and these were never used operationally. There is some doubt as to whether these were actually taken into service, however. In addition to complete aircraft, CCF also provided a large number of components such as oleo legs and propeller blades for the Curtiss company. The Canadian Fairchild Company produced 300 SBF 1, 3 and 4 Helldivers (also corresponding to Curtiss built 1, 3 and 4 models), bringing the total production of the SB2C series to 7200 aircraft. The Helldiver’s main theatres of operation were the Philippines and the Pacific, where they replaced the SBD Dauntless as the standard USN scout/bomber during the second half of the war. They served in many naval air actions during the remainder of the Second World War and, in the case of the later models, for a while after. Two experi¬mental versions were the XSB2C 2 (an SB2C-1 (fitted with twin floats) and the XSB2C 6 (with a 2100 hp Wright R 2600 22 engine installed), but neither was considered suitable for series production. The RAAF enjoyed considerable success with the Vultee A 35 Vengeance in the dive bombing role against the Japanese. Wanting to enlarge its air force, Australia placed an order for 150 A 25A Shrikes. However, Gen George Kennedy was strongly critical of the A 35 mission despite excellent results, and stated that the Australians did not have enough pilots to fly the Shrikes, even though the RAAF denied this. Kennedy got his way and the A 35 Wing was withdrawn from New Guinea. In order to replace their Dauntlesses, worn out from combat in Indo China, France obtained an initial batch of SB2C 5s in 1950. They saw heavy action against communist forces and introduced napalm to the field of combat, operating from the carrier Arromanches and land bases and the final Helldivers were withdrawn from Aeronavale service in 1955. In view of the communist threat to Greece 42 SB2C 5s were delivered, starting in 1949, which formed a training unit and the 336th Light Bombing Squadron at Larisa, replacing the Supermarine Spitfire. The Helldivers saw considerable action in the civil war, attacking communist forces backed by the Soviets and Yugoslavs. The type was effectively retired in 1954, replaced by F 84s. Worried about communist threat, the USA supplied 25 SB2C 5s to Italy. However, the 1943 surrender agreement specified that Italy could not operate bombers so, in a bureaucratic move, the designation was changed to S2C 5. Some examples were used for anti submarine patrols and participated in NATO exercises. Further Helldivers were supplied to the Italian Air Force and two were gifted to the Italian Navy in the USA where a couple of Italian Navy pilots were trained on them, the only Italian S2C5 fitted with tailhooks. In 1953 the USA supplied the Italian Navy with 46 examples; they were never used, and by the early 1960s these aircraft were scrapped. The USA supplied Portugal with 24 SB2C 55 in 1950; they were operated by the Navy until 1952, then transferred to the Air Force. All were out of service by 1956. The Royal Thai Air Force received six SB2C 5s during 1951, and these aircraft were flown on combat missions against communist forces until 1957. In all, 5105 Helldivers were built at Columbus, 900 A 25As at St Louis, Missouri, 300 SBFs a Fairchild Canada and 834 SBWs at Canadian Car and Foundry. The last Helldivers soldiered on until June 1949. Production: a total of 5516 of all variants.
Model 84 SB2C Engine: 1700 hp Wright R 2600 Cyclone 14 cylinder two row radial
XSB2C-1 Engine: Wright R 2600 8, 1,700 hp Wing area: up to 39.2 sq m (422 sq ft)
SB2C-1 / SBF-1 Engine: 1700 hp Wright R¬2600 8 radial. Armament first 200 aircraft: 4 x 0.5in wing guns, 2 x 0.3in guns for the observer Armament: 2 x 20 mm (0.79 in) cannon, 1 x 0.50 in (12.7 mm) gun Internal bombload: 454 kg (1000 lb)
A 25A Shrike / SB2C 1A Engine: 1,267kW Wright R-2600-8 Propeller: three-bladed Curtiss Electric constant-speed
SB2C 1C Helldiver Engine: Wright R 2600 Span: 15.15 m (49 ft 8.5 in) Length: 11.18 m (36ft 8 in) Gross weight: 7533 kg (16607 lb) Maximum speed: 452 km/h (281 mph) Armament: 4 x 12.7mm heavy machine guns, 2 x 7.62mm M1919 Browning machine guns
XSB2C 2 Undecarriage: Edo floats
XSB2C 2 Engine: Wright R 2600 Span: 15.15 m (49 ft 8.5 in) Length: 11.18 m (36ft 8 in) Armament: 4 x 12.7mm heavy machine guns, 2 x 7.62mm M1919 Browning machine guns Undercarriage: twin float
SB2C 3 / SBF-3 Engine: 1,416kW / 1900 hp R 2600 20 Cyclone engine Propeller: four blade Span: 15.15 m (49 ft 8.5 in) Length: 11.18 m (36 ft 8 in) Gross weight: 7471 kg (16471 lb) Maximum speed: 473 km/h (294 mph)
SB2C-4 / SBF-4 Engine: 1,416kW / 1900 hp R 2600 20 Cyclone engine Propeller: four blade Armament: eight 5 in (127 mm) rockets or 454 kg (1000 lb) bombload
SB2C-4E Engine: 1,416kW / 1900 hp R 2600 20 Cyclone engine Propeller: four blade Radar equipped
SB2C 5 Engine: 1 x Wright Cyclone R 2600 20, 1,900 hp (1417 kW) at 2,1300 rpm at sea level. Wing span: 49 ft 8 5/8 in. (15.15m) Length: 36ft 8in. (11.17m) Height: 13ft 1.5 in. Wing area: 422 sq.ft. Empty Weight: 10,580lbs (4,799kg) Maximum Take-Off Weight: 16,288lbs (7,388kg) Cruising speed: 148 mph. Maximum speed: 260 mph (418kmh; 226kts) at 16,100ft. Maximum Range: 1,165miles (1,875km) Climb to 10,000 ft: 8.9min. Service Ceiling: 26,401ft (8,047m) Armament: 2 x 20mm cannons in the wings 2 x 7.62mm Browning M1919 machine guns on a flexible mount in the rear cockpit. Up to 2,000lbs of ordnance in the internal bomb bay including 1 x Mark 13-2 torpedo. Up to 500lbs of ordnance across two underwing hardpoints. Crew: 2 Hardpoints: 2 Radar: APS 4
XSB2C 6 Engine: 2100 hp Wright R 2600 22
CanCar SBW-1 Helldiver Engine: Wright R 2800 8, later R 2800 20 Armament: 2 x cannon and 1 x .50 machine gun Bomb load: 1,0001b, later 2,0001b
In 1937 the United States Navy was looking for a replacement aircraft for its Curtiss SOC Seagull series of biplane floatplane aircraft. The USN wanted a more modern, monoplane that could fulfill the same floatplane reconnaissance role but also include better performance and could operate from both land and water bases as needed. The undercarriage wasmrequired to be interchangeable. Curtiss and Vought were invited to produce prototypes through a May 1938 contract. The Curtiss prototype designated XSO3C-1 and the Vought XSO2U-1. The XSO3C-1 first flew on October 6th, 1939 and Curtiss receiced an order for production after some design revisions were ordered by the USN (including larger tail surfaces and upturned wingtips to aid in stability). The revised Curtiss Model 82A became the USN SO3C-1 for production under the early nickname of “Seagull”. The chosen powerplant became the 388kW Ranger V-770-6 series engine.
SOC3
The SO3C fuselage sat atop a large centralized float running nearly the length of the aircraft while each wing underside was supported by smaller stabilizing floats fitted to struts. The pilot sat immediately behind the engine and the second crewmember, the designated observer (seated facing forward), was in a separate cockpit towards the rear of the aircraft, his position at the base of the vertical tail fin. Wings were mid-mounted and straight along the leading edge and tapered at the trailing edge, clipped at their tips (with a noticeable upturn to each tip end, needed to counter some initial instability problems in the prototype design). The empennage was dominated by a large vertical tail fin curved to provide the SO3C a most identifiable appearance. Horizontal stabilizers were fitted to either side of the vertical tail fin base. Construction was of all-metal, with the exception being the fabric-covered control surfaces. Power was a Ranger XV-770-8 inverted V12 engine of 600 horsepower. The engine provided a listed top speed of 172 miles per hour though cruising was limited to around 123 miles per hour. Range was roughly 1,150 miles (or about eight hours of flight time) and the service ceiling was limited to 15,800 feet. The SO3C held an empty weight of 4,284lbs with a maximum take-off weight equal to 5,729lbs.
The SO3C carried a single 0.30 caliber fixed, forward-firing M1919 Browning machine gun (operated by the pilot) and a 0.50 caliber Browning M2 heavy machine gun in the rear cockpit (operated by the observer). The SO3C could make use of a pair of 100lb general purpose bombs or 325lb depth charges, held externally underwing or on a central bomb rack. If fitted, the central bomb rack could field a single 500lb general purpose bomb.
The SO3C first flew in 1939 and was officially introduced for service in 1942. Users were limited to the United States Navy and the British Royal Navy (RN) Fleet Air Arm (FAA). The first SO3C-1 “Seagull” production models were received by the USN in July of 1942 and served aboard the USS Cleveland with their V-770-6 series engines. The performance of these was never truly up to the expected USN performance standards and the type was subsequently generally converted to radio-controlled target drones under the designation SO3C-1K. All SO3C-1s were removed as front-line service, by the USN, by the time the SO3C-2C production models became available.
The SO3C-2 was based on the Curtiss Model 82B and was perceived as a more “navalized” form complete with arrestor gear and an under fuselage bomb rack on the landplane version to mount a 227kg bomb. 456 SO3C-2s were ultimately produced though 250 of these were sent to the UK under Lend-Lease under the designation of SO3C-1B (Curtiss Model 82C), although British records would seem to suggest that only 100 were received. However, these were ultimately delivered as SO3C-2C models featuring an uprated powerplant, hydraulic brakes for aircraft with wheeled landing gear and other improvements. The Royal Navy Fleet Air Arm utilized the SO3C as the Seamew Mk.I. When the newer SO3C-2C versions came online with the Royal Navy, these were simply designated as the “Seamew 1”. All of the British Seamews were relegated to general training elements and specific air gunnery/radio training groups. First Seamews were delivered to the Royal Navy in March of 1943. The first squadron fielding the Seamew became training 755 Squadron at Worthy Down (FN459), Hampshire, UK, in August of 1943. This squadron operated up until 1945. Two other training squadrons existed as the 744 and the 745 Squadrons based out of Nova Scotia, Canada. In all, 250 Seamew aircraft were received by the British. Later deliveries were cancelled after the availability of the American Vought OS2U “Kingfisher” floatplanes increased by January of 1944. Once the Kingfisher gained more ground, the Seamew quickly disappeared from the Royal Navy by the beginning of 1945. The “Queen Seamew” was the FAA designation for the SO3C-1K target drone production variant of the SO3C series. Thirty such examples were ordered under Lend-Lease but the order was cancelled before delivery.
Curtiss attempted to revive the aircraft by introducing the SO3C-3 (Curtiss Model 82C). The SO3C-3 boasted a lighter operating weight with a more powerful engine in the form of the SGV-770-8 series. While promising, only 39 examples were completed before production ended in January 1944. Any existing orders were cancelled outright. Plans to introduce an SO3C-3 variant with arrester gear, and production by the Ryan Aeronautical Corporation of SO3C-1s under the designation SOR-1, were cancelled. Some 795 SO3C were ultimately produced. The SO3C was deemed more-or-less obsolete by 1944 and retired completely from service by 1945.
Curtiss SO3C-2 Seamew Engine: 1 x Ranger VX-770-8 inverted V12, 600 hp Length: 36.84ft (11.23m) Wingspan: 37.99ft (11.58m) Wing area: 289.982 sq.ft / 26.94 sq.m Wing loading: 19.68 lb/sq.ft / 96.0 kg/sq.m Height: 14.99ft (4.57m) Maximum Speed: 172mph (277kmh; 150kts) Cruising speed : 109 kt / 201 km/h Maximum Range: 1,150miles (1,851km) Service Ceiling: 15,797ft (4,815m) Armament: 1 x 0.30 (7.62mm) caliber M1919 Browning machine gun in fixed, forward-firing position. 1 x 0.50 (12.7mm) caliber M2 Browning heavy machine gun in rear cockpit position. 2 x 100lb bombs OR 2 x 325lb depth charges underwing. 1 x 500lb on centerline bomb rack (land-based Seamews). Accommodation: 2 Hardpoints: 2 Empty Weight: 4,284lbs (1,943kg) Maximum Take-Off Weight: 5,730lbs (2,599kg)
Curtiss SO3C-2C Engine: 1 x 447kW Ranger SGV-770-8 inline Take-off weight: 2599 kg / 5730 lb Empty weight: 1943 kg / 4284 lb Wingspan: 11.58 m / 37 ft 12 in Length: 11.23 m / 36 ft 10 in Height: 4.57 m / 14 ft 12 in Wing area: 26.94 sq.m / 289.98 sq ft Max. speed: 277 km/h / 172 mph Cruise speed: 201 km/h / 125 mph Ceiling: 4815 m / 15800 ft Range: 1851 km / 1150 miles Armament: 1 x 7.62mm + 1 x 12.7mm machine-guns, 2 x 45kg bombs