The main task within DISPROP is to replace two large propellers of a given reference aircraft with a number of small propellers distributed over the whole wing. The propellers are arranged so that there is a minimum distance to the fuselage and the last propeller is in placed in wing tip position. A flight segment with three propellers of this distributed propulsion aircraft is then examined both numerically and experimentally to determine sensitivities. Different distances and positions of the propellers are examined.