Complex sentence: In the nose a three cylinder Anzani engine was mounted in an inverted Y position, its cylinder heads projecting from a curved, metal cowling with upper concave curvature following the one upright cylinder.
Split into simpler sentences: In the nose a three cylinder Anzani engine was mounted in an inverted Y position. It was partially under a curved, metal cowling, cylinder heads projecting, with upper concave curvature following the one upright cylinder.