BK 3,7 equipped
ground attack aircraft were developed for tank hunting on the
Eastern Front in an effort to blunt the massive numerical superiority of the Soviet
T-34 tank as the war turned against Germany. The concept was rather rudimentary, suffered from poor accuracy, severe weight penalty making the craft vulnerable to fighters, and low ammunition capacity; but could be extremely effective when operated by a sufficiently skilled and practised ground-attack pilot, such as
Hans-Ulrich Rudel in his BK 3,7 armed
Junkers Ju 87G. The heavy-calibre autocannon-armed series of
Junkers Ju 88P twin-engined attack–
bomber destroyer aircraft series used twin BK 3,7 cannon, mounted side-by-side in a conformal ventral fuselage gun pod, in its Ju 88P-2 and P-3 versions. The P-3 version differed only through the addition of extra defensive armour. As with other examples of the P-series, the Ju 88P-2 and P-3 were perceived as failures as anti-tank and bomber destroyer aircraft. In contrast to the bombs delivered by
dive bombing, when the BK 3,7 was used to attack the relatively thin armour of the top of the turret and the engine compartment armour of a tank, kills could be achieved with a relatively light and cheap
armour-piercing projectile that could be carried in much greater quantities than bombs. One of the two surviving
Junkers Ju 87s is a G-2 model displayed at the
Royal Air Force Museum Cosford; the wings have attachment points for BK 3,7 gun pods but it is not displayed with them fitted. ==See also==