Junkers Ju 87 single mast mounted further forward on the "greenhouse" canopy, and much simpler, lighter-weight wheel "spats" used from the -B version onwards, discarding the transverse strut bracing of the "A" version's maingear design. This new design was again tested in Spain, and after proving its abilities there, production was ramped up to 60 per month. As a result, by the outbreak of World War II, the Luftwaffe had 336 Ju 87 B-1s on hand. The B-1 was also fitted with "Jericho trumpets", essentially propeller-driven sirens with a diameter of mounted on the wing's leading edge directly forward of the landing gear,
Junkers Bomber" design competition for a trans-Atlantic range strategic bomber saw the Junkers firm build two prototypes of its six-engined Junkers Ju 390, basically a stretch of the four-engined Ju 290 transport — competing against the trio of Me 264 four-engined prototypes as the only fully airworthy competitors for the contract, which had included designs from Focke-Wulf and Heinkel that were never built, with the competition ended in July 1944 due to the developing need for interceptors to defend the Reich. The Junkers company survived the Second World War and was reconstituted as Junkers GmbH and eventually merged into the MBB