Advancements in Hydraulic Systems for the More Electric Aircraft

Advancements in Hydraulic Systems for the More Electric Aircraft Jeff Skinner, PE (1), Aaron Smith, PhD (2), Stefan Frischemeier (3), Martin Holland (4) 1 : Eaton, 5353 Highland Drive, Jackson MS 39206, JeffreyDSkinner@eaton.com 2 : Eaton, AaronSmith@eaton.com, 3: Eaton, StefanFrischemeier@eaton.com 4 : Eaton, MartinHolland@eaton.com Abstract This paper summarizes a study of two different aircraft architectures for a hypothetical single aisle aircraft including a comparison of the baseline centralized hydraulic system approach found on most commercial aircraft today: a hybrid electro-hydraulic approach with distributed hydraulics in multiple zones of the aircraft, and a fully distributed system including hydraulics or electro-mechanical actuation at each point of use. Advantages and disadvantages of each of the architectures for the hypothetical aircraft size as well as considerations of the impact of other aircraft sizes on the study conclusions are discussed with a brief overview of some of the enabling technologies for future hydraulics and electro-mechanical actuation. Introduction With the advance of More Electric Aircraft (MEA) or Energy Optimized Aircraft (EOA) architectures