Sikorsky Aircraft Corporation

Daniel Bazzani

Mark R Alber

Timothy Fred Lauder

Peter James Waltner

Jayant Sirohi

Nikolas A Macko

A touchdown control system for a vertical take-off and landing (VTOL) aircraft including a detection controller receptive to aircraft state signals including one or more of an altitude signal, an aircraft attitude signal, an external environment signal, an aircraft velocity signal, an attitude rate signal, and a proximity signal. An enable controller is operatively connected to the detection controller. The enable controller selectively provides a touchdown control signal based on one or more of the altitude signal, the aircraft attitude signal, the external environment signal, the aircraft velocity signal, the attitude rate signal, and the proximity signal. A regulation controller is operatively connected to the enable controller. The regulation controller selectively adjusts aircraft control surfaces based on the touchdown control signal to facilitate final touchdown of the VTOL aircraft.

Touchdown control system

A rotary-wing aircraft with an electric motor mounted along an axis of rotation to drive a rotor system about the axis of rotation.

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Stuart, FL, United States of America

Daniel Bazzani