A Redundant Electromechanical Elevator System

Dewa Gede Surya Eka Natha; Edy Suwondo; Rianto Adhy Sasongko

Dewa Gede Surya Eka Natha Aerospace Engineering, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
Edy Suwondo Aerospace Engineering, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
Rianto Adhy Sasongko Aerospace Engineering, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia

Keywords: electromechanical actuator, aircraft elevator systems, redundant system

Abstract

Current trend towards sustainable aviation has led to development of more- and all-electric aircraft and its systems. However, the usage of electrical alternatives in flight still limited due to safety and reliability concern, especially jamming failure. Hence, this paper proposed an architecture for redundant electromechanical elevator systems (EMA) and a decoupling method to release an actuator from the entire system at jamming failure. This paper also discusses the potential advantage of using EMA over existing hydraulic actuator system in aircraft. It is shown that EMA system proposed in this paper satisfy the regulatory requirements to power aircraft elevator system. The comparison to other type of actuator also shown improvement in reliability, with failure rate for the proposed EMA systems around 2.25×10^-8 failure per flight hour.

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