Title: Helical vertical path control apparatus for aircraft area navigation system

Abstract: Control apparatus for an aircraft area navigation system provides a vertical path control signal to cause the aircraft to ascend or descend along a helical surface as the craft executes a transition laterally from the inbound course to the outbound course of a waypoint whereby the craft attains the waypoint altitude when crossing the course bisector thereof while maintaining a predetermined vertical flight path angle when steered on a predetermined lateral course transition path.

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Inventors: Baker, Donald H. (Phoenix, AZ, US)
Bowe, Larry J. (Phoenix, AZ, US)
Post, William C. (Scottsdale, AZ, US)

Application Number: 581988
Filing Date: 1975-05-29
Publication_date: 1976-12-21
Assignee: Sperry Rand Corporation (New York, NY)
Primary Class(es): 244/189 342/63, 701/120, 701/218
Other Classes:
US Patent Ref:

3691361	Sep, 1972	Perkins	235/150.
3705306	Dec, 1972	Lydon et al.	235/150.
3786505	Jan, 1974	Rennie	235/150.

Other Refs:
Primary Examiner: Kunin, Stephen G.
Assistant Examiner:
Attorney: Terry; Howard P., Cooper; Albert B.