1. A device for designing aircraft, comprising: a design tool configured to calculate specifications for an aircraft, which are specifications for an aircraft, based on a variety of design parameters necessary for designing an aircraft; a first evaluation tool configured to evaluate whether the specifications for an aircraft are met calculated by calculation tool, given restrictions; the second evaluation tool, made with the ability to evaluate whether the specifications for the aircraft, nnye calculation means, data optimization conditions for the optimization of the aircraft; modifying means configured to change design parameters, iteratively processing is performed whereby design parameters are repeatedly changed by said changing means and specifications for an airplane are repeatedly calculated by said design means on the basis of design parameters so that specifications for an airplane calculated by design means satisfy constraints, as well as satisfying optimization conditions, and moreover, the said calculation tool calculates the specifications plane for a plurality of specimens at each calculation to samoletu.2 specifications. Aircraft designing device according to claim 1, wherein the first evaluation means evaluates whether the constraints associated with operational characteristics, aerodynamic characteristics, stability, landing gear and aircraft structure are satisfied. A device for designing aircraft according to claim 1 or 2, in which the changing means changes the design parameters
展开▼