07 - Systems, Subsystems and Equipment
DEVELOPMENT OF A HIGH EFFICIENT HYDRAULIC POWER PACK
L.Z. Lima¹, M.N. Duval¹, T. Zantner¹, D. Metzler¹, T. Lammering¹, F. Thielecke², N. Trochelmann², P.S. Bischof²; ¹Liebherr-Aerospace Lindenberg GmbH, Germany ;²Hamburg University of Technology, Germany
As a first tier supplier, Liebherr-Aerospace faces the ever growing challenge to provide the different airframers with competitive products within a highly competitive and agile business environment. Costs, time-to-market, product maturity, and ramp-up capabilities are certainly driving factors for technology selection, but environmental aspects play a growing role and must be taken into consideration by airframers and suppliers, since they are key criteria for success and customer satisfaction.rnThe electrification of aircraft systems contributes to the goal of greener air transportation, with reduced emissions and decrease in fuel consumption. Several solutions have to be developed at system level to give airframers the elements necessary to turn the “more electric aircraft” into reality.rnLiebherr proposes a high efficient solution to for decentralized hydraulic power generation, providing the airframes the flexibility to place the hydraulic power pack close to the consumers, eliminating long pipe sections between power generation and consumers. Two size of high efficient power packs were conceived, one for large power demand, typically applied for main landing gear retraction/extension system, and one mid-sized pack for primary flight controls consumers placed in the aircraft tail (rudder and elevators). The system works solely on electric power, and thus is an important brick for the electrification of future aircraft.rnThis paper shows how Liebherr-Aerospace faced the challenge of maturing the solution, bringing our customers a solution with excellent performance while being tailored for high production rates and easy maintenance.rn