Brewster XA-32

Justo Miranda

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Following the success of the Stukas during the Battle of France, General Marshall decided to reintroduce the dive-bomber concept to the USAAC.
In October 1940, an order was placed for 78 ex-Navy dive Douglas SBD-3A dive bombers.
On December 7, 1941, these aircraft equipped three squadrons of the 27th Light Bombardment Group, under the denomination A-24-DE Banshee.
The Type saw combat in the Dutch East Indies suffering heavy casualties against the Japanese Mitsubishi Zeros. The failure was attributed to poor crew training and the absence of escort fighters.
On September 6, 1941, the USAAF issued a requirement calling for a single seat Close Support Army Cooperation Airplane capable of defending itself from enemy fighters thanks to its speed and the use of armor instead of the rear gunner.
Kaiser-Fleetwings proposed the XA-39 project (MX-300) powered by one R-2800-27 radial engine rated at 2,000 hp and armed with two 37-mm cannons, four 0.5-in heavy machine guns, 6 x 500-pound bombs or 2 x 1,600-pound in the bomb bay and 2 x 1,000-pound bombs in underwing racks.
Vultee proposed a single seat version of the A-31 Vengeance named XA-34 (V-86).
Brewster proposed a single seat variant of the XSB2A-1 Buccaneer dive bomber.
In May 1942, the mockup was presented to USAAF officers armed with eight forward firing 0.5-in machine guns and 3,000-pound maximum bombs load.
The armament was later increased to four 20-mm guns and six 0.5-in heavy machine guns in the first prototype (c/n 42-13568) and to four 37-mm anti-tank guns in the second prototype XA-32 A (c/n 42-13569).
The Kaiser-Fleetwings proposal did not progress beyond mockup and was cancelled before any prototypes were ordered.
On October 30, 1941, USAAF ordered two Vultee XA-34 prototypes and two other prototypes Brewster XA-32.
Brewster promised a maximum speed of 560 km/h, with R-4360 engine, and the start of mass production in April 1943 but the c/n 42-13568 was flown on May 22, 1943, fitted with a completely new tailfin and split dive flaps and powered by one P&W R-2800-37 rated at 2,100 hp only.
During flight tests, it was shown that the power of the single engine was insufficient to obtain the promised performance powering an aircraft as large as a Grumman TBM Avenger and as heavy as a Douglas A-20 Havoc.
Ailerons and rudder vibration during a dive proved dangerous.
The exhaust pipes configuration produced dangerous concentrations of carbon monoxide and excessive heat inside the cockpit, blinding the pilot during night flights.
By 1943, USAAF was already utilizing North American A-36A Invader dive bombers and Republic P-47 Thunderbolt low level attack bombers, Vultee XA-34 contract was amended to change the role to low level attack, under the denomination XA-41 but the Brewster XA-32 project was considered unsuitable for combat and cancelled in November 1944.
Brewster XA-32 technical data
Wingspan: 13.75 m, length: 12.37 m, height: 3.87 m, wing area: 38.25 sq. m, max weight: 9,060 kg, max speed: 500 km/h, range: 800 km, range with underwing drop tanks: 1,500 km, service ceiling: 7,900 m, climb rate: 535 m/min, power plant: one Pratt& Whitney R-2800-37, 18-cylinder, radial, air-cooled engine rated at 2,100 driving a four blade cuffed propeller with 4,130-mm of diameter, wing mounted armament: four 20-mm cannons and four 0.5-in heavy machine guns, bomb load: 2 x 454 kg in underwing racks 1 x 454 kg in the bomb bay fitted with a parallelogram device that made it possible to drop the bomb outside the propeller arc in a dive.
Painting scheme 1943 (42-13568)
Olive Drab (FS 30118) upper surfaces, Neutral Grey (FS 36173) under surfaces and white star roundels in four positions.
Painting scheme 1943 (42-13569)
Olive Drab (FS 30118) upper surfaces, Neutral Grey (FS 36173) under surfaces, star & bars insignias in four positions, yellow serials and yellow propeller hub with German Kullerschnauze-style red spiral.

Brewster XA-32 A technical data
Wingspan: 13.75 m, length: 12.37 m, height: 3.87 m, wing area: 38.25 sq. m, max weight: 8965 kg, max speed: 500 km/h, range: 800 km, range with underwing drop tanks: 1,500 km, service ceiling: 7,900 m, climb rate: 535 m/min, power plant: one Pratt& Whitney R-2800-37, 18-cylinder, radial, air-cooled engine rated at 2,100 driving a four blade cuffed propeller with 4,130-mm of diameter, wing mounted armament: four 37-mm cannons, bomb load: 2 x 454 kg in underwing racks 1 x 454 kg in the bomb bay fitted with a parallelogram device that made it possible to drop the bomb outside the propeller arc in a dive.
Painting scheme 1944 (modified 42-13569)
Natural metal overall with star & bars insignias in four positions.
 

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Do you have also a drawing of the XA.34?
I'm sorry I can't help; I've only found vague references to this project in specialized texts on Vengeance. In my opinion the V-86 was a single seat variant of the XA-31 A fitted with armored cockpit.

If I had to draw it with the scarce information available, I would use it as a reference on the cockpit of the XA-41 (another aircraft designed on Monday).:)
 

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I'm sorry I can't help; I've only found vague references to this project in specialized texts on Vengeance. In my opinion the V-86 was a single seat variant of the XA-31 A fitted with armored cockpit.
With all due respect, Justo, you are getting confused here.

The XA-34 was not a Vengeance derivative. It was the Brewster Bermuda, a export variant of the U.S. Navy's SB2A Buccaneer for Britain which was cancelled. The Vultee V-86 project never received a military designation.
 
With all due respect, Justo, you are getting confused here.

The XA-34 was not a Vengeance derivative. It was the Brewster Bermuda, a export variant of the U.S. Navy's SB2A Buccaneer for Britain which was cancelled. The Vultee V-86 project never received a military designation.
OK
 

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From old site on the Net,

Brewster Aeronautical Corp. didn't have a long history in aircraft construction. It began operating in this field only in 1932, initially as a subcontractor for Grumman. It then license-produced Grumman FF-1 carrier-based biplane fighters for the US Navy. In the mid-1930s, the company's chief designers, D.T. Brown and R.D. MacCart, decided to try their hand at it themselves and developed the F2A—the US Navy's first production carrier-based monoplane fighter. However, the aircraft's combat performance proved inferior, and only Finnish pilots spoke favorably of it. Subsequent Brewster designs—this time the SBA and SB2A "Buccaneer" carrier-based dive bombers —were also unsuccessful, not so much due to technical problems as to organizational issues within the company itself. Problems with proper production organization and meeting agreed deadlines, as well as prolonged prototype tests (and frequent defects in production aircraft), did not win the company any supporters among the Navy, so much so that in the spring of 1941 the Navy decided to cancel further orders from the company and took over its management in April 1942. The last contract Brewster fulfilled was to build 730 F3A-1 (F4U-1 "Corsair" ) fighters under license from Vought.

Faced with the looming crisis, MacCart decided to find new customers for the plant's products and interested the US Army Air Corps in developing a light bomber and attack aircraft, category A – Attack. At the time, the USAAC – impressed by the successes of the German Junkers Ju 87 in the early campaigns of World War II – was urgently searching for a similar aircraft capable of dive-bombing and direct support of front-line troops. The twin-engine Douglas A-20, then entering service, performed admirably in the following years as a light bomber, but was unsuitable for dive-bombing. Work was underway to adapt the Douglas SBD "Dauntless" carrier-based dive bomber (designated A-24 "Banshee" ) to Army requirements, but this was a temporary solution. A completely new aircraft was needed.

Brewster's proposal was met with considerable interest by the US Army Air Corps (from June 1941, the US Army Air Force), as the company had some experience in building dive bombers for the US Navy and was not burdened with urgent military orders. On September 6, 1941, the USAAF announced official tactical and technical requirements for a new single-seat, single-engine attack and dive-bomber aircraft, and on October 30, it ordered Brewster to build two prototypes, assigning them the type designation XA-32 and serial numbers 42-13568 and 42-13569.

Designed by Brewster's engineers, the aircraft was a cantilever, mid-wing aircraft of metal construction with an enclosed cockpit and retractable landing gear with a very wide main wheelbase. It featured the bulging fuselage characteristic of all Brewster aircraft. The horizontal stabilizers, with a slight riser, were placed midway up the vertical stabilizer. The attack aircraft was powered by a Pratt & Whitney R-2800-37 radial engine with individual exhaust pipes from each cylinder. The wing flaps also served as air brakes to limit speed during a dive. For this purpose, they were designed as split flaps capable of being deflected up and down simultaneously. The aircraft received very heavy armor on vital structural elements, weighing a total of 295 kg.

In January 1942, the aircraft's final armament was agreed upon with USAAF representatives. Initially, the first XA-32 prototype was planned to be equipped with two 20 mm cannons in the wings and bomb bays—also in the wings—for ten 45.4 kg (100 lb) bombs each. The second prototype, the XA-32A, was to be equipped with four 20 mm cannons and six 12.7 mm machine guns, eliminating the bomb bays. A variant with four 37 mm cannons was also considered. Ultimately, it was decided that the XA-32 (s/n 42-13568) would be armed with four 20 mm cannons and six machine guns, and the XA-32A (s/n 42-13569) with four 37 mm cannons. In each case, the fuselage was to have a spacious bomb bay with a maximum capacity of 1,362 kg of bombs, equipped with a special rotating handle, which could be extended from the bay beyond the propeller circle during dive bombing.

In May 1942, Air Force representatives approved a mock-up of the aircraft. According to the designers' calculations, the aircraft was to reach a top speed of over 560 km/h (350 mph). The first prototype was planned for October 1942, and serial production would begin in April 1943. Unfortunately, these deadlines were not met, and the first XA-32 did not fly until April 22, 1943. Test flights revealed a number of design flaws. Primarily, with a maximum bomb load, the aircraft reached a top speed of only 400 km/h (240 mph), and its range dropped to 644 km (400 mi). Furthermore, with bombs loaded, the aircraft proved unstable in flight; test pilots complained of poor visibility from the cockpit, very high temperatures, and blinding glare from the exhaust flames. Furthermore, deploying the airbrakes (flaps) during a dive dramatically reduced the effectiveness of the ailerons and rudders.

The aircraft required further intensive design work, but time was running out. The USAAF canceled its order for production A-32s. In 1944, the situation at the Brewster plant became the subject of an investigation by a special U.S. Congressional committee (attempting to determine why the company was unable to fulfill government arms orders). Shortly thereafter, the factory declared bankruptcy.
 
@Justo Miranda Your color scheme info for the second XA-32 needs a little fine tuning.

42-13569 XA-32A LEFT FRONT VIEW WRIGHT FIELD 15Aug1944 [A-28701 AC]
42-13569 XA-32A LEFT SIDE VIEW WRIGHT FIELD 15Aug1944 [173471 USAF]
42-13569 XA-32A LEFT FRONT VIEW 09Aug1945 [28701 AC]
US NARA II RG342-FH images, my scans
 

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From old site on the Net,
... In 1944, the situation at the Brewster plant became the subject of an investigation by a special U.S. Congressional committee (attempting to determine why the company was unable to fulfill government arms orders). Shortly thereafter, the factory declared bankruptcy.
There's so much more to be said about that! It's been years since I read the transcripts, but as I recall, the head of the union at Brewster was a con man with multiple identities, who refused to give his real name to the investigating committee. He led strikes (despite wartime no-strike clauses in the workers' contracts) at critical times and tried to dictate policy to the people running the company. He personally couldn't understand why Brewster kept wanting to put new aircraft on the production line when "his" people were already so familiar with building Buffalos, and he fought every attempt Brewster tried to make to move forward with better products. His behavior was outrageous and yet he got away with it. There's a direct correlation between his crazy behavior and the downfall of Brewster as a company. Anyone wanting to dig deeper should look into the court case United States vs De Lorenzo, especially the notes at the end of the document here: https://law.justia.com/cases/federal/appellate-courts/F2/151/122/1488996/
 
I've read that Brewster had interest in fitting one of the XA-32 prototypes with an R-4360 Wasp Major and some sources indicate this was done to no improvement, but I'm doubtful it even went that far. I can't imagine the US government would be very willing to furnish them with one of the work-in-progress R-4360s considering how badly Brewster had done with everything so far. Surely someone would rightfully figure that Brewster would somehow make the aircraft even heavier and draggier, so all of that extra power would be for naught. Considering the XA-32 was already having overheating problems the idea sounds even worse.
 
There's so much more to be said about that! It's been years since I read the transcripts, but as I recall, the head of the union at Brewster was a con man with multiple identities
Given Brewster had employed convicted fraudsters the Miranda brothers as salesmen, he'll have fitted right in!
 

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Came across this PDF on the history of Brewster Aeronautical Corporation .

"FALL FROM GRACE : The Brewster Aeronautical Corporation, 1932-42"

https://www.aahs-online.org/pubs/journals/files/302118.pdf

cheers ,
Robin .
This reminds me of the TV episode in which Columbo investigates the murder of a commodore of a yacht club. The detective tries to interrogate the suspect during a boat ride in rough seas, but he fails because he gets seasick and must explain that he belongs to another branch of the family different from the one that discovered America.:)
 
I think that was for VTB competition,to design a torpedo bomber ?!.

Based on the AAHS text put on this forum by Robunos
I think the highwing plane is the
Brewster model 37B (30.4.'41)
See : American Secret Projects 1937-1945 by
Tony Buttler and Allan Griffith.
chapter7 U.S. Navy attack A.C.
P.194-195-196.
 

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