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| The BMW139 engine The story of the BMW139 starts at the beginning of the Thirties with a licence of production of an American engine, the Pratt & Whitney "Hornet". Manufactured under german designation BMW114, it gave rise to an improved version the BMW132. This engine equips several aircraft with Lufthansa, whose Ju160 and famous Ju52, the German national airline company is then in full expansion  and will be used as seedbed of frameworks and pilots for future Luftwaffe. The RLM requires of BMW and the Bramo Firm to produce more powerful radial engines, intended to equip the future aircraft with this Luftwaffe in gestation. These project of engines were Bramo329 and the BMW139. The Bramo firm was repurchased by BMW can of time after the beginning of the study from these 2 new engine. The BMW139 is the result of the assembly of 2 engines BMW132, it thus comprises 2 stars of 9 cylinders cooled by air. Of a cubic capacity of 55,4 liters it would have developed of 1400 to 1550 CV, that is to say much more than the most powerful engines on line of the time, this engine A immediately allured K.Tank for its project of FW190 then in stammering. Indeed, the recent studies undertaken on the few Russian hunters Polikarpov I-16 recovered in Spain and been driven by radial engine, showed the robustness and the capacity to box damage of this type of engine. Unfortunately for the BMW139, the problems of cooling of the 2 engines assembled on the V1 prototypes and V2 appeared insoluble and this engine was quickly abandoned with the profit of a new engine the BMW801.(If you have other information, photographs or plans of the BMW139, please contact me !) | |||||||||
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