1results about How to "Achieve performance requirements" patented technology

This invention provides a parametric layout for a high lift-to-drag ratio air-breathing aircraft with internal and external double-wavelength flow, including an external wavelength forebody, an internal wavelength flow channel, a wavelength-like aftbody, a leeward fuselage, a rear wing aerodynamic rudder, and a rudder. The internal wavelength flow channel includes an internally contracting inlet, an S-curve, an isolator, a combustion chamber, and a nozzle. The cross-sectional curves of each component include symmetry plane control lines, wing leading edge control lines, forebody characteristic cross-section control lines, aftbody characteristic cross-section control lines, and control lines for each characteristic cross-section of the internal flow channel. Each characteristic cross-section control line is tangent at its connection point, and the control line intersecting the symmetry plane must be tangent to the horizontal line to ensure a smooth transition between surfaces. The shape of each cross-section control line can be modified by adjusting parameters. This invention improves upon the performance degradation, insufficient adjustability, and low iteration efficiency problems in the engineering of internal and external double-wavelength air-breathing aircraft, achieving further improvement in the performance and optimization efficiency of the integrated internal and external flow aircraft.