FIELD: aircrafts.
SUBSTANCE: invention relates to the aircrafts designing methods. Aircraft with the air-jet engine aerodynamic appearance determining method consists in the fact, that determining the aircraft basic aerodynamic appearance, based on the aircraft basic aerodynamic appearance developing the aerodynamic appearance variants, calculating the aerodynamic characteristics for each of the aerodynamic appearance N variants, determining the optimization integral criterion 
for each of the aerodynamic appearance variant, choosing the aerodynamic appearance variant, for which KO has a maximum value; with GB is the optimum air flow, Cxopt is the optimal drag coefficient.
EFFECT: invention is aimed at the aircraft appearance development process optimizing through the use of an integral criterion, the KO indicator, for the competing layouts quick peer review.
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