Stable Low Aspect Ratio Flying Wing

摘要

A low aspect ratio flying wing provides aerodynamic stability throughout the flight envelope with improved aerodynamic efficiency. Insufficient stability and reduced aerodynamic efficiency typical of low aspect ratio flying wings is improved through wing design and proper application and placement of horizontal stabilizers and boundary layer control. Lateral asymmetric boundary layer manipulation is employed to alter flying wing orientation in flight. Lateral extension and retraction of the main structure wing optimizes efficiency. This novel flying wing is not found in literature or “prior art” and provides improvement in aerodynamic stability and efficiency over previous designs. Given the large amount of research, literature, patents and activity in the field since the 1930's and the absence of a practical design indicates the non-obvious nature of these disclosures. In addition, those skilled in the art teach away from present disclosures failing to realize the better than predicted advantages.

主权项

1. A flying wing comprising:
An aspect ratio greater than 0.5 and less than 1.5; and A main structure of a wing, said main structure wing with a center of gravity located forward of 50 percent chord, said main structure wing aspect ratio greater than 0.5 and less than 1.5, said main structure wing is primary lifting airfoil; and Horizontal stabilizers mirrored about a central plane, said central plane is defined by the longitudinal and vertical axis of the main structure wing, said horizontal stabilizers extending outboard of the lateral extents of the main structure wing by a distance greater than 10 percent of the main structure wing longest chord length, said horizontal stabilizers offset vertically from the main structure wing chord line by a distance greater than 10 percent of the main structure wing longest chord length, and said horizontal stabilizers positioned longitudinally aft of the main structure wing 50 percent chord point.