Enhanced L/D and Virtual Shaping of NLF Sections, Phase I

A robust flow control method promising significantly increased performance and virtual shape control for natural laminar flow (NLF) sections is proposed using a novel momentum porting concept. Significant aerodynamic, systems, and control benefits are possible through the integration of virtual aerodynamic shaping technology into modern aircraft. Virtual aerodynamic shaping involves using flow control technology to manipulate the flow field to achieve a desired result regardless of the geometry. A high-payoff approach to significantly increased air vehicle performance is the use of a novel momentum porting concept for the virtual shaping of extended run natural laminar flow sections. The objective of this research is to incorporate a robust and simple tangential pulsed jet blowing system that requires no external air to design and virtually shape an extended natural laminar flow section offering radical performance enhancement in the form of increased lift-to-drag and maximum lift. Additionally, the system will produce a wing design enabling a hinge-less, full-span virtual shaping capability which can be used for fully pilot reactive roll control, span load tailoring, and gust load alleviation. The system will provide significantly enhanced performance for the air vehicle throughout the entire flight envelope. More »