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Vought AU-1 Corsair


SubRyan
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Model: Vought AU-1 Corsair
 
Technical Description: Carrier ground attack


Visual Aspects

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Short History: The Korean War ensured that an updated version of the Corsair design, which had been in continuous production for ten years, be created to meet a requirement for a low-level daylight close-support role. This version of the Corsair was at first named the XF4U-6, only later being designated the AU-I (meaning Attack, U [military designation for Vought], -1, first Vought attack aircraft). During F4U-5 production, the Vought plant was moved from Connecticut to a site near Dallas, Texas, and it was here that the Corsair ground-attack version evolved. The AU-1 was therefore not built for high-altitude performance. Survivability from small arms and light anti-aircraft fire was the prime defensive objective, and so the AU-1 was heavily protected by armour plate. As on the F4U-5, a flat, armoured-glass windscreen was fitted, and sensitive components were moved to less vulnerable locations on the aircraft. No cheek or chin giIls were used on the ring cowl of the AU-1, and the oiI coolers were moved from the stub-wing inlets and relocated to inside the fuselage at the wing roots where they were surrounded by armour plate. The inlet for the single-stage supercharger was moved aft, near the wing center section, where it, too, could be protected by armour plate. But the longer fuselage of the F4U-5 was retained, and even the bulges on the sides of the fonwrd fuselage remained where they had been on the F4U-5. The R-2800-83WA with its single-stage supercharger, did not require the two cheek scoops, so these were deleted. However, when viewed from the front, the cowl ring of the AU-1 still had the bulges where the scoops had been on the F4U-5. 

 

Outwardly, the AU-1 embodied the F4U-5, but the powerplant was changed to the single stage, two speed, supercharged Pratt & Whitney R-2800-83WA radial, that was designed for operations at lower altitudes. Though take-off power for the AU-1 was rated at 2,300, speed was considerably slower than the F4U-5, with a top speed of 238mph (383kmph) at 9,500ft (2,896m). It was also more than 5,000lb (2,268kg) heavier than the F4U-5. The engine was capable of 2,000hp at 2,800rpm at 3,000ft (900m), but the power output quickly dropped off to 1,700hp at 2,800rpm at 16,000ft (4,877m).

 

The gun armament remained the four 20-mm cannon used an all Corsairs from the F4U-4B on, although they received some modification for use in the AU-1. This allowed them to all be fired together or in pairs. By using only one cannon an each wing at a time, firepower was cut an half , but firing time was doubled The longer firing time often proved much more valuable in ground support. Five pylons were installed under each outer wing panel, and the two inboard and fuselage pylon mounts were retained from earlier F4U's.

 

F4U-5N Bu No. 124665 was converted to become the first XF4U6/ AU-1. The first production AU-1 flew on 31 January 1952. VMA-323 was the first to use the AU-1 operationally in Korea, flying out of K-6 Airfield, Pyonglaek, South Korea; and VMA-312 flew AU-1s from K-3 Airfield, Pohang, Soulh Korea. Although heavily armoured, sixteen AUs were lost to enemy groundfire during the Korean War. Six AU-1s were lost before a ceasefire was declared on 21 July 1953. The remaining AU-1s were returned to the USMC, which quickly phased them out of front-line service. They flew with reserve units until the type was finally phased out of US service in 1957.

 

Once the AU-1's were no longer in a flyable condition, 25 were given to the French Aeronavale as part of the MAP defense procurements for allied militaries and were used in Indo-China during 1954 and the Bizerte Crisis in Tunisia during 1961

 

Configuration: Attack

 

Production Status

First flight: September 1951
Introduction year: February 1952

Status: retired

Number built: 111

 

Crew Data
Number of crew: 1
Roles of crew: pilot
 
Engine Data
Manufacturer:  Pratt & Whitney
Name:  R-2800-83-WA
Number of engines: 1
Number of cylinders: 18

Configuration: radial

Cooling: air cooled
Supercharger / Turbo: single stage, two speed supercharger
Fuel: 115/145 octane

Injection: water-methanol injection
Dry weight:  2384 lb
Prop shaft ratio:  0.45

Impeller / gear ratio: 7.29:1, 9.45:1

Cylinder compression ratio: 6.75:1

Fuel consumption: 

 

Fuel Data
Fuel tanks: 234 gallons

 

Oil Data
Oil tanks: 27.5 gallons

 

Power Data
Takeoff Power (SL): 2300 hp @ 2800 rpm

Combat Power (SL): 2800 hp @ 2800 rpm

Combat Power (11000 ft): 2270 hp @ 2800 rpm

Military Power (700 ft): 2300 hp @ 2800 rpm

Military Power (16000 ft): 1700 hp @ 2800 rpm

Normal Rated Power (8500 ft): 1800 hp @ 2600 rpm

Normal Rated Power (18500 ft): 1500 hp @ 2600 rpm


Propeller Data
Manufacturer: Hamilton Standard
Type: C.S. Design 6837A-0
Number of blades: 4
Blade diameter: 13 ft 2 in
 
Basic Geometric Data
Length: 34 ft 1 in
Wing span: 41 ft
Wing area (including ailerons): 314 ft2
Height: 14 ft 10 in
Flap area (each):  ft2
Elevator area (including tab):  ft2
Rudder area (each): ft2
Aileron area (each): ft2

 

Weight Data
Empty weight: 9835 lbs

Basic weight: 10600 lbs

Design weight: 12000 lbs

Combat weight: 13343 lbs

Maximum takeoff weight: 19400 lbs

 
General Performance Data
Maximum speed (clean condition, combat power): 438 mph (705 km/hr)

Minimum speed (12140 lbs, power off, gear down): 92 mph (148 km/hr)

Landing speed: 
Cruising speed: 
Service ceiling: 28800 ft
Range: 

 

Max Speed (13343 lbs, combat power, with pylons)
.. at SL                                          362 mph (582 km/hr)

.. at 2200 ft                                   367 mph (591 km/hr)

.. at 5000 ft                                   366 mph (589 km/hr)

.. at 10000 ft                                 372 mph (598 km/hr)

.. at 14000 ft                                 389 mph (626 km/hr)                  

.. at 15000 ft                                 388 mph (624 km/hr)

.. at 20000 ft                                 380 mph (611 km/hr)

.. at 25000 ft                                 365 mph (587 km/hr)

.. at 30000 ft                                 334 mph (537 km/hr)


Rate of Climb (13343 lbs, combat power, with pylons)
.. at SL                                          4620 fpm (23.5 m/s)

.. at 5000 ft                                   ~ 3700 fpm (18.8 m/s)

.. at 10000 ft                                 ~ 3450 fpm (17.5 m/s)

.. at 15000 ft                                 ~ 2750 fpm (14 m/s)

.. at 20000 ft                                 ~ 1900 fpm (9.7 m/s)

.. at 25000 ft                                 ~ 1100 fpm (5.6 m/s)

.. at 30000 ft                                 ~ 300 fpm (1.5 m/s)

 

Time to altitude

.. to 10000 feet                             

.. to 20000 feet                             


Armament
Guns:

  • 4 x 20mm AN/M3 cannons in wings (924 rounds)

Bombs / rockets (outer wing pylons):

  • 6 x 500 lb (inboard, center, and outboard only due to size), or
  • 10 x 250 lb, or
  • 10 x 127mm HVAR

Bombs (inner wing pylons):

  • 2 x 2000 lb, or
  • 2 x 1000 lb, or
  • 2 x 500 lb, or
  • 2 x 250 lb, or
  • 2 x Tiny Tim rockets

Bombs (fuselage pylon):

  • 1 x 2000 lb, or
  • 1 x 1000 lb, or
  • 1 x 500 lb, or
  • 1 x 250 lb

Ammunition


Notes


Sources
1. AU-1 Corsair Standard Aircraft Characteristics, 1 June 1953

2. (Crowood Aviation Series) Vought F4U Corsair by Martin W. Bowman

3. (Les AILES de GLOIRE de L'AERONAUTIQUE NAVALE no 12) Chance-Vought Corsair F4U-7 & AU-1 by Patrick Marchand and Junko Takamori

4. (Detail and Scale vol 56) F4U Corsair Part 2 F4U-4 thru F4U-7 by Bert Kinzey

Edited by SubRyan
  • Like 2
  • Upvote 19
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I'll support this as the Corsairs are surprisingly pleasant to fly by American fighter standards in-game.  The ability to fire the cannons in pairs or all at once is an interesting feature as well, as it would allow one to conserve ammo on targets for which all four cannons would be overkill (i.e. soft ground targets), with the option to fire all four at once if absolutely required (i.e. going head-on against an attacking fighter).

Edited by Z3r0_
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2 hours ago, MasterBLB said:

A Corsair able to carry 6x500lb + 3x2000lb would be most welcomed.

 

Wouldn't be able to use that as the payload limit was 8200 lbs, so 4 x 500 and 3 x 2000 is what you would be stuck with

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On 9/13/2016 at 6:07 AM, SubRyan said:

 

Wouldn't be able to use that as the payload limit was 8200 lbs, so 4 x 500 and 3 x 2000 is what you would be stuck with

 

Which is still a LOT of ordinance for a single-engined aircraft.

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  • 2 years later...
  • 1 year later...
31 minutes ago, ALIEN109 said:

Hope I can grind the event during quarantine, wait no my work is vital... :(

 

Gimme corsair

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  • Senior Suggestion Moderator

As the AU-1 Corsair has been implemented with Space thunder,

 

Moved to Implemented Suggestions.:salute:

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