The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1998
Filed:
Jun. 06, 1995
Applicant:
Inventor:
Hugh Schmittle, Westminster, MD (US);
Assignee:
Freewing Aerial Robotics Corporation, College Park, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64C / ; B64C / ; B64C / ;
U.S. Cl.
CPC ...
244 48 ; 244 / ; 244 1725 ; 244181 ; 244182 ;
Abstract
A VTOL/STOL free wing aircraft includes a free wing having wings on opposite sides of a fuselage connected to one another respectively for free rotation about a spanwise access. Improved control upon landing of the aircraft is achieved by utilizing a variable pitch propulsion system, enabling the pitch of the propeller to be varied corresponding to the speed of the aircraft and angle of approach upon descent.