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Bart D Hibbs, Peter B S Lissaman, Walter R Morgan, Robert L Radkey: Aircraft. Sheppard Mullin Richter & Hampton, September 22, 1998: US05810284 (128 worldwide citation)

This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot win ...


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Robert L Radkey, Bart D Hibbs: Leading edge inlet for ram air pressurized airfoil. Aerovironment, Harvey B Jacobson, September 27, 1983: US04406433 (19 worldwide citation)

The air scoop opening at the leading edge of a flexible, ram-air inflated airfoil canopy, is framed between curved lip sections extending tangentially from the upper and lower surface members of the canopy to prevent airflow separation adjacent the leading edge and the drag producing effect thereof. ...