#eviation alice

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Eviation's Alice all electric commuter aircraft during taxi trials at Arlington Airport

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More Electric Aircraft Market to grow at a CAGR of 14.84% on the basis of value during the forecast period from 2020 to 2025. North America is expected to dominate the global more electric aircraft market.

The more electric aircraft (MEA) initiative highlights the deployment of electrical power in place of hydraulic, pneumatic, and mechanical power to optimize the performance and life cycle cost of the aircraft. The MEA requires high reliability, fault-tolerant, autonomously controlled electrical power system to provide higher quality power and electrical levels to the aircraft's loads.

The aviation industry is focusing on hybrid-electric propulsion as well as all-electric propulsion. Hybrid architecture is one of the solutions for the industry to reduce weight, fuel burn, and environmental impact, particularly by avoiding the requirements to design the main combustion engine to meet maximum power requirements, for example, at take-off.

The non-propulsive aircraft systems such as actuation, de-icing, and air-conditioning have been relying on mechanical, hydraulic, and pneumatic sources of power. These systems have conventionally been powered by the aircraft engines, with power generated through various mechanisms such as hydraulic and electric systems, which gain power from mechanical conversion through the engine gearbox, whereas pneumatic power is generated by engine compressor air bleed systems.

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In a more electric aircraft (MEA), the aircraft employs more electrical equipment in place of systems that would earlier have been mechanical, hydraulic, or pneumatic. The B737 became the first aircraft which introduced electrical cabin equipment and avionics. After this, MEA trend followed the introduction of the fly by wire (FBW) system in the Airbus A320 in the late 1980s. This MEA concept then led to the introduction of the A380 and the employment of an electrically actuated thrust reverser, along with hybrid electro-hydraulic actuation systems for wing and tail flight control surfaces. After this, the 787 became the first large commercial aircraft to have an electrically powered environmental control system (ECS) and to implement electrically actuated brakes, as well as electrical de-icing.

The key drivers in the move toward more electric aircraft are reduced system weight, ease of maintenance, increased engine efficiency, reduction of engine use on ground, controllability, automatic reconfiguration, and advanced diagnostics and prognostics.