Complex sentence: Owing to its large radius, the cargo hatch on the DC-10 could not open inside the fuselage without taking up valuable cargo space, so the hatch was designed to open outward, allowing cargo to be stored directly behind it.
Split into simpler sentences: Owing to its large radius, the cargo hatch on the DC-10 could not be swung inside the fuselage without taking up a considerable amount of valuable cargo space. Instead, the hatch was designed to open outward, allowing cargo to be stored directly behind it.