The invention provides a solar-powered
airplane airfoil profile design method and a solar-powered
airplane airfoil profile, wherein the method includes the steps: first airfoil profile parameters of an airfoil
reference model are acquired, wherein the first airfoil profile parameters include a first airfoil profile maximum
relative thickness, a relative position of the first airfoil profile maximum
relative thickness, a first airfoil profile maximum relative camber, a relative position of the first airfoil profile maximum relative camber, and a first airfoil profile head
radius; constraint conditions of an airfoil profile design are determined according to design demand parameters, wherein the design demand parameters include the
flight speed, the elevating force coefficient and the Reynolds number, and the constraint conditions include a maximum
relative thickness threshold, and an airfoil profile thickness threshold having the distance in the range of 20%-60% of the chord length away from an airfoil profile
front edge; according to the first airfoil profile parameters of the airfoil
reference model and the constraint conditions of the airfoil profile design and with use of a
genetic algorithm and / or numerical
simulation, second airfoil profile parameters meeting the design demand parameters and in the range of all the thresholds of the constraint conditions are determined, and the solar-powered
airplane airfoil profile is determined according to the second airfoil profile parameters.