To verify the short take-off and large-load characteristics of the fan-wing aircraft

a 6 kg fan-wing aircraft is studied. Based on the analysis of its structure characteristics and flight principle

the longitudinal model is built according to the force analysis on the ground and in the air

which effectively connects the ground running and the aerial flying. Meanwhile

four factors (elevator deflection

position of center of gravity

fan wing rotation speed

and airplane load) influenced the take-off running distance are analyzed and compared through numerical simulations. The simulation results show that: the no-load flight leads to the shortest take-off distance; the elevator deflection is located as large as it can be during the take-off process; as the center of gravity closer to the force application position of the cross-flow fan

the take-off distance remains shorter; when the factors are fixed

the shortest take-off distance

less than 9 m

is obtained with an optimal rotation speed. The allocation of the four factors is needed to gain a better take-off performance through the comparative analyses.