high wing vs low wing
there are obvious advantages to using either design particularly to suit the aircraft's intended ops. however, despite all these clear advantages, there are still odd aircraft designs that i can't figure out.
the high wing design is usually designed for short haul props aircraft, however the BAe 146 is a short haul aircraft operating out of short runways, using jet engines, why does it have a high wing design? surely, using a low wing design would improve ground effect and further improve STOL attributes.
so since high wing aircraft are usually designed to accomodate prop aircraft, why does the SAAB 340 using a low wing design? surely, the prop blades are quite long and therefore a high wing design would seem more adequete.