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BRAZILIAN AIR FORCE FAB * - BRAZILIAN AIR FORCE

31)VULTEE VENGEANCE A31/35


With the involvement of Brazil in the allied effort in World War II, the newly created Brazilian Air Force was equipped with a large range of military aircraft provided under the Leand Lease Act, including 28 units of the Vultee A-31 Vengeance bombardment bomb that came from a batch initially intended for the British and was to be delivered between August and December 1942. In addition, the FAB would still receive 50 cells of the improved A-35 model in the course of 1943 However, to avoid the heterogeneity present in the first batches of Vengeance aircraft produced at the Nashville facility in Tennessee, so the Americans chose to delay delivery within a few months.


Despite the qualities as a patrol aircraft, the same also suffered the same difficulties as the other Vengeance operators. They also pursued the FAB A-31, the main point being caused by the powerplant that equipped the aircraft. Although the basic version of the Wright R-2600 engine was of proven efficiency and reliability, the GR-2600-A5B5 version did not have these qualities. One anomaly was the excessive consumption of oil, attributable to deficiencies in the adjustment of the piston rings of the engines. As a consequence, on longer flights there was a risk of the engine engulfing due to lack of oil, another problem was the electric fuel pumps that periodically failed, as an aggravating factor to these factors, the Vultee's spare logistics system was very poor .


Combined, these effects and other material problems were soon to emerge; and Vengeance employed in the 2nd Group, only 11 were in flight conditions, although there are few records on the operation of the model in the FAB, different reports indicate that the GR-2600-A5B5 engine was one of the main causes of the low level of readiness.


On August 17, 1944, the 1st Bombing Group (1ºGBP) was established, based at the Santa Cruz Air Base. As a consequence, the Vultee Vengeance of the 2nd Group and the Vultee V-11-GB2 of the 1st Group were absorbed by that unit, which had four squadrons. The same decree also created the 2nd Bombing Group (2ºGBP), based at São Paulo Air Base. Original planning provided for the second group to receive the Vultee A-35, American plans anticipated the delivery of 41 aircraft between July and October 1943, at the rate of five units per month, followed by a further ten in November and eleven in December, these plans were thwarted by the same technical difficulties that previously pursued the A-31s, including a new problem of rust contamination that hit entire production batches.


In mid-1944, the 4th Ferry Group was again convened to begin the transfer of the Vultee A-35B-VN destined to FAB, but seven units suffered accidents due to technical problems or failures during ferry flights, on December 1, 1944 another aircraft was lost in an accident during landing at Santa Cruz Air Force Base. An order issued by the USAAF found that all A-35Bs transported to Brazil simply stopped flying, staying wherever they were, and many cells went in dereliction at  Caravelas Airfield, Bahia


Translated from www.armasnacionais.com


Powerplant: Wright Cyclone GR-2600-A5B-5 with 1.700 hp   


Empty weight 10.300 lbs, Max weight 16.400 lbs  


Cruise speed  of 230 mph, Max. speed 279 mph at 13.500 pés    


Service ceiling of 22.300 feet.  


Range  2.300 miles.  


Armament: 7 Browing .30, machine guns, being 3 in each wing and one rotating at the rear nacelle. It could carry a bombload of  2.000 lbs.



The Vultee Vengeance seen at Recife circa 1943. Photo castropr.blogspot.com.br



Vengeance A 31 parked at Santa Cruz Airfield some 30 miles south  from Rio de Janeiro. Photo. Ruy de Souza.



Brazilian Air Force A 35 Vengeance. They were mostly used on patrol missions off Rio De Janeiro. Photo by Alva Photobucket



A group of A 35 parked alongside the Zeppelin Hangar at Santa Cruz Airbase Rio de Janeiro. Photo by Alva Photobucket



Maj. Magalhães Motta in front of one A 35 Vengeance at Santa Cruz Airfield.



Above one Vengeance seen after a crash landing at Galeao airbase. Photo by Alva Photobucket


 

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