Goodrich Corporation

Hamilton Sundstrand Corporation

Carl Aeschliman

Jon Shearer

Michael John Giamati

Kevin Edward Roach

George F Owens

Sabeshan Sean Periyathamby

Charles A Lee

A heating arrangement has a positive temperature coefficient ('PTC') heater. A resistor is electrically in series with the PTC heater sized and configured to limit current through the PTC heater and the resistor below a selected value.

PTC heater with autonomous control

A power control system includes a multi-phase power source, an ungrounded multi-phase load, a plurality of power switching circuits and a plurality of zero-crossing circuits. The multi-phase power source includes a plurality of phase power outputs. The plurality of power switching circuits are each connected to provide power from one of the plurality of phase power outputs to the ungrounded multiphase load. The plurality of zero-crossing circuits are connected to provide control signals to the plurality of power switching circuits. Each of the plurality of zero-crossing circuits are connected between one of the plurality of power phase outputs and an ungrounded reference.

Three-phase power switching for ungrounded wye circuits

An aircraft hot water supply system () comprising a group of water-use stations () each including a hot water line having a heater () which heats water at a heating rate dependent upon power provided thereto. A power manager () allocates different non-zero percentages of heater-dedicated power to different heaters () depending upon conditions at the corresponding water-use stations (). A network () is provided to establish peer-to-peer communication among the heaters' controllers ().

Aircraft hot water supply system

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Rittman, OH, United States of America

Carl Aeschliman