access icon openaccess Flap system power drive unit (PDU) architecture optimisation

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 26/06/2018, Accepted 30/07/2018, Published 22/01/2019

Conventional flap and slat high-lift surfaces actuation systems in a commercial aircraft consist of actuators mechanically connected via a transmission system across the wingspan, driven from a centralised power drive unit comprising of a hydraulic, electric, or hybrid hydraulic/electric motor arrangement. The permanent coupling to the shafts makes the entire flap system move in unison, as do the slats. This paper will investigate and discuss different potential system architecture, and present the benefits associated with such architecture. It will also present the advantage that can be linked to a full electric flap configuration.

Inspec keywords: machine control; hydraulic motors; aircraft control; actuators; aerodynamics; electric motors; aircraft; aerospace components

Other keywords: hybrid electric motor; electric flap configuration; actuators; centralised power drive unit; commercial aircraft; slat high-lift surfaces actuation systems; transmission system; power drive unit architecture optimisation; hybrid hydraulic motor; flap high-lift surfaces actuation systems

Subjects: Control technology and theory (production); Control of electric power systems; Applied fluid mechanics; Measurement and control instrumentation industry; Hydraulic and pneumatic control equipment; Aerospace control; Power system control; Mechanical components; Aerospace industry; Fluid mechanics and aerodynamics (mechanical engineering)

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http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2018.8234
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