Вот что у Франса Бонни написано:
(перевод Вам вроде не нужен?)
Vought F4U-1C Corsair
This version was based on the F4U-1A with a revised wing armament of 4 × 20 mm Hispano M2 cannon, 120 rounds each, in stead of the original 6 × 0.50 inch (12,7 mm) machine guns for additional offensive capability in the ground-attack role. The different armament was indeed superior for the strafing task, but most American pilots preferred the machine gun armament with its higher rate of fire, which they believed superior for the air-to-air role, so production soon reverted to the original standard.
Number built: 200
То есть, для отстрела Зиро пушки не очень годились.
Vought F4U-4C Corsair This version was based on the F4U-4, but was in stead armed with 4 × 20 mm M3 cannon, 220 or 246 (overload) rounds each.
Number built: 300 out of 2.197
Опять таки идут попытки поставить пушки.
идем дальше:
Vought F4U-5 Corsair This version was the first post-war version of the Corsair. Three F4U-4 were converted to XF4U-5 standard by fitting the Pratt & Whitney R-2800-32W(E) Double Wasp radial, rated at 2,450 hp (1.827 kW) and fittted with a two-stage supercharger of the variable-speed type with twin auxiliary blowers in place of the earlier engines' single blower. Externally the difference was visible because the earlier type’s single inlet in the 6 o’clock position at the bottom of the cowling by two cheek inlets in the 4 and 8 o’clock positions on the lower sides of the cowling. The whole engine installation was also tilted down through 2° 45’ to enhance stability and provide the pilot with improved fields of vision, and other changes were a slightly widened forward fuselage and a fully retractable tailwheel.
The production aircraft all had these changes, and then some: the wings were entirely skinned in metal for a significant reduction in drag, spring-tabbed elevators for reduced control force requirements at high speed, a further improved cockpit, a canopy that was bulged sufficiently outward to provide the pilot with good rearward fields of vision, a combustion heater to warm the cockpit and defrost the windscreen, electric heaters for the gun bays and pitot head, a fixed armament of 4 × 20 mm M3 cannon aimed via the Mk 6 Fire-Control System incorporating a Mk 8 Gyroscopic Lead-Computing Reflector Sight Gunsight, a centerline hardpoint able to carry a 2,000 lb (907 kg) load, the two inner underwing hardpoints uprated to take individual drop loads weighing up to 1,600 lb (726 kg), and the outer underwing hardpoints revised to carry a maximum of 10 × 5 inch (127 mm) rockets; the three central hardpoints could each carry a Mk 5 or Mk 12 drop tank, but fuel system constraints dictated that the maximum load was two tanks carried on the two underwing hardpoints or alternatively on the centerline and starboard underwing hardpoints.
Number built: unknown out of 923 (F4U-4C until F4U-7 and AU-1 aircraft)
Исчезли японцы - ставим пушки. Почему?
Vought F4U-7 Corsair This version was built in response to meet a requirement of the French naval air force for a fighter-bomber. based on the F4U-5, it had the wing of the AU-1 (with 4 × 20 mm cannon and provision for up to 4,000 lb/1.814 kg of disposable stores). Powered was delivered by 1 7t Pratt & Whitney R-2800-18W Double Wasp radial.
This was the last version of the Corsair to be built.
Number built: 94
А вот что захотели французы для ИБ-целей.
А вот и радар уменьшился настолько что пушки влезли:
Goodyear FG-1E Corsair This version was the night-fighter version of the FG-1. It was fitted with the APS-4 radar with its antenna in a pod mounted on the leading edge of the starboard wing, and was armed by 4 × 20 mm cannon.
Number built: 8 out of 4.014 FG-1 versions
А к концу 40-х пушки прочно укрепились на флоте:
Vought AU-1 Corsair In 1950 the Corsair was still used heavily in its fighter-bomber role, so Vought planned a dedicated attack variant, and a single F4U-5N was converted as the XF4U-6 prototype for this development. This was later redesignated as the AU-1.
Power was delivered by 1 × Pratt & Whitney R-2800-83WA Double Wasp radial engine, rated at 2,300 hp (1.715 kW) and fitted with a simplified supercharger installation lacking the F4U-5’s cheek inlets but optimized for the delivery of maximum power at low level. Other technical details are: an empty weight of 9,835 lb (4.461 kg), max level speed of 238 mph (383 km/h) at 9,500 ft (2.895 m), cruising speed of 184 mph (296 km/h) at optimum altitude, typical range of 484 miles (779 km), initial climb rate of 920 ft (280 m) per minute, and service ceiling of 19,500 ft (5.945 m).
The inboard movement of the oil coolers and extra armor protection for the pilot were just the most obvious features of the changes designed to reduce the AU-1’s vulnerability to ground fire, and another protective improvement was the incorporation of 25 pieces of armor plate, no fewer than 17 of them shielding the underside of the engine and its accessory section. Armament consisted of 4 × 20 mm M3 cannon, 215 rounds each, and the hardpoints were strengthened still further to allow loads of up to 5,000 lb (2.268 kg) of disposable stores lifted at an overload take-off weight of 19,398 lb (8.799 kg).
A typical load could include one 250 Imp gal (300 US gal, 1.136 liter) drop tank on the starboard inner hardpoint, one 1,000 lb (454 kg) bomb on the port inner hardpoint, and up to four 250 lb (113 kg) bombs under each outer wing panel. An alternative load was 2 × 1,000 lb (454 kg) bombs and 6 × 500 lb (227 kg) bombs, and the outer underwing hardpoints could otherwise lift 10 × 100 lb (45 kg) rockets of 5 inch (127 mm) caliber, or 10 × 100 lb (45 kg) bombs. The weapons were aimed via the Mk 6 Mod 0 Fire-Control System with separate cannon, rocket firing and dive-bombing capabilities.
Number built: 111