Peso, custo, confiabilidade e manutenção.
Veja PROJETO DO SISTEMA DE ACTUAÇÃO COM ATUADORES ELÉTRICOS
Segurança
Veja OS ATUADORES ELETRO-HIDROSTÁTICOS DO CONTROLE DE VÔO A380, REALIZAÇÕES E LIÇÕES APRENDIDAS
In terms of safety several aspects can be highlighted: As far as power source redundancy is concerned the number is increased from 3 to 4 since 2 electrical systems replace 1 hydraulic system. Furthermore an additional margin of safety results from the introduction of the hydraulic/electric dissimilarity in the power sources: This provides further protection against common failures, such as maintenance errors, which may affect all the hydraulic systems, whatever their number. Moreover the electrical power provides flexibility in routing, resulting in an easier segregation of power distribution routes against engine burst and other “particular risks”, and an isolation and reconfiguration capability that hydraulic systems cannot offer.
The reduction in the total number of hydraulic components results in improvements of the MTBF and dispatch reliability, by elimination of potential leakage sources.
The elimination of the generation and distribution components associated to one of the hydraulic systems (pump, reservoir, filters, plumbing…) and the replacement of the associated hydraulic actuators by electrically powered actuators results in weight savings.