Complex sentence: The small, highly-loaded wing resulted in an unacceptably high landing speed, so a boundary layer control system (BLCS) of blown flaps was incorporated, bleeding engine exhaust over the trailing-edge flaps which provided some STOL-type lift capabilities.
Split into simpler sentences: The small, highly-loaded wing resulted in an unacceptably high landing speed. So, a boundary layer control system (BLCS) of blown flaps was incorporated into the aircraft's design; bleeding engine exhaust over the trailing-edge flaps which provided some STOL-type lift capabilities.