sentences:  As the design was developed between 1931 and 1933, the canard was moved from the top to the bottom of the fuselage, to improve vision for the pilot and field of fire for the forward gunner.In addition, wind tunnel tests of the four-fin configuration showed that it did not provide a significant advantage over a single, large fin, and so the latter configuration was adopted for simplicity.The Fw 42 was intended to be powered by two BMW VI 12-cylinder, liquid-cooled engines, which were expected to provide a top speed of nearly , and a range of over .