The Boeing Company

US Government As Represented by the Secretary of the Army

Daniel J Tracy

Bernard J Lamberty

Daniel J O'Brien

George S Andrews

John P Palmer

Disclosed is a variable angle conical scanning antenna that employs an offset paraboloidal reflector which is rotated about an axis that extends through the focus of the paraboloid of revolution that defines the reflector. Electromagnetic energy is supplied to the reflector by an antenna feed that is mounted at the focus of the paraboloid of revolution and directed along the axis of rotation. In this arrangement the electromagnetic energy that is reflected from the offset paraboloidal reflector forms an angle between the axis of rotation and the beam of reflected electromagnetic energy that is equal to the angle between the axis of rotation and the focal axis of the paraboloid of revolution that defines the reflector. Thus, conical scanning at a cone angle that is equal to twice the angle between the axis of rotation and the reflected beam of electromagnetic energy is achieved as the offset paraboloidal reflector is rotated. Variable angle scanning (i.e., conical scanning over a range of cone angles) is achieved by tilting the offset paraboloidal reflector about the focus of the paraboloid of revolution that defines the reflector with the axis of antenna rotation and the focal axis of the paraboloid of revolution that defines the reflector remaining in substantial coplanar relationship.

Variable wide angle conical scanning antenna

A recoverable remotely piloted vehicle (RPV) having: a deflectable canard/elevator placed very close to the nose tip; a constant (cross) section fuselage; wings mounted low and well aft on the fuselage; elevons; a centrally positioned weapons/payload bay, with doors, located internal of the upper portion of the fuselage; and, inflatable landing skids. The weapon/payload is dropped from the RVP, while the RVP is in flight in an inverted position.

Growing community of inventors

Maple Valley, WA, United States of America

Daniel J Tracy