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EXPERTISE SAFRAN: PROVEN EXPERTISE IN AIRCRAFT ENERGY SYSTEMS The right energy, when and where it’s needed Aircraft electrification is not of course an end in itself. Like all technologies, electrical systems have both advantages and disadvantages. What we gain in flexibility and reliability may quickly be lost in weight, for instance, not to mention that the overall environmental budget of electrification is not necessarily more advantageous on airplanes. For all of these reasons, any replacement of hydraulic or pneumatic systems by their electrical counterparts has to be carefully studied in light of its impact on the aircraft’s performance and cost-effectiveness throughout its life. Safran is not trying to electrify all aircraft functions at any price, but rather to address real-world issues. For instance, how much energy does each system require at any given moment? And what is the best way to generate and transmit this energy? Over and above all these considerations, Safran is firmly convinced of one thing: the largest part of energy efficiency improvements in next-generation aircraft will come from the energy management system... and that’s a special area of expertise at Safran! In particular, a balance must be sought between propulsive and non-propulsive energy. For the moment, energy for the aircraft’s non- propulsive systems is tapped from its engines. Tomorrow, based on the smart electrification of systems and the development of hybrid electric architectures, for example, we will be able to increase propulsion system performance, while also generating enough electricity to meet increasing energy needs in other areas, vital for passenger safety and comfort. Independent energy sources include batteries, fuel cells and turbogenerators. Electrification tends to blur the borders between different types of aircraft systems and equipment. It is therefore all the more critical for a supplier to span the widest range of onboard energy systems – and today only Safran can offer this comprehensive expertise. As an international leader in aircraft propulsion and equipment, Safran is in prime position to address the challenges of aircraft electrification. The comple- mentary areas of expertise offered by Safran companies means that the Group is involved in all aircraft energy systems, from power generation by jet engines and auxiliary power units (APU), to many different aircraft systems and equipment, from avionics and brakes to in-flight entertainment (IFE). Safran has built up confirmed leadership in aircraft electrical systems, including distribution hubs, power management units, generators, actuators, wiring and more. Because of this extensive expertise, Safran masters not only the specific challenges for each system, but also their overall integration within the aircraft, for both civil and military platforms, as well as space vehicles. Safran is now capitalizing on its unrivaled holistic vision to build foundations for the future of aircraft energy systems. It identifies, develops and tests state-of-the-art technologies, while also developing advanced systems integration solutions. The Group can supply all or part of these systems to aircraft manufacturers to make sure their platforms combine higher performance and reliability with greater energy efficiency. Over 100 years in the making... The electrification of aircraft reaches back to... the 19th century! As early as 1883, the Tissandier brothers in France were flying the first balloon powered by an electric motor – but it wasn’t powerful enough to make headway against the wind. The next entrants were Hungarian engineers, who developed the PKZ-1 helicopter in 1916, featuring an electric motor that developed 140 watts of power at 6,000 rpm. It did have a drawback, however... The PKZ-1 got its electricity from a cable connected to a generator on the ground... The world would have to wait until 1973 for a glider to be transformed into an electric airplane carrying its own energy source. 89PDF Image | SAFRAN AND AVIATIONS ELECTRIC FUTURE
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