Luftwaffe Bomber-B special set Fw.191 / Ar.340 / Do.317 / Ju.288

In 1939, the RLM issued a development contract for an aircraft under the designation Bomber-"B". This was to be a twin-engined medium bomber capable of carrying a 4,000 kg bomb load to any point in "B"ritish Isles. The power would be supplied by the under developed Jumo 9-222 radial engine. The specification was aimed at the firms of Arado, Dornier, Junkers and Focke-Wulf. The first manufacturer to respond was Arado. They submitted Ar.340 that already reached mock-up stage but the unorthodoxy design was rejected by the RLM. Dornier's Do.317 was a further development of Do.217. During flight test the Do.317 displayed no appreciable improvement in performance over the Do.217. The RLM ordered all further work to crease. Only the Junkers Ju.288 and Focke-Wulf Fw.191 received authorisation. In 1940 Focke-Wulf began design work on the Fw.191, and Junkers had already developed studies for the EF.73 fast bomber, that was selected and redesignated Ju.288 for submission to Bomber-B program. However, the failure of the Jumo engines delayed both prototypes trails until mid-1942. These then had to be carried out with less powerful BMW radials. In 1943, the RLM ordered the scrapping of the entire Bomber-B program.