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Analysis of an alternative actuator for primary control surfaces

Aeronautics and Aerospace Open Access Journal
Amir Shahneh, Shiva Kumar Vutla Pandirolla

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Background: Aviation Industry has adverse effects on the environment since past few
years. Despite these effects, industry is expected to grow more than 10% strategically
in many regions across the globe in a near future. Accordingly, several global aerospace
Original Equipment Manufacturers (OEM) and Research organisations are focusing on
this trend to develop eco-friendly aircraft which aim to use the renewable sources of energy.
Output of that research is to Design, Develop, Manufacture and Qualify the All-Electric
Aircraft (AEA) and release into the market within the near future. When it comes to the
electrification of the aircraft, every single conventional system on the aircraft is driven using
electric energy rather than hydraulics or pneumatics. Control surfaces and other secondary
systems on the conventional aircraft operates using hydraulic or pneumatic driven actuators
and they have direct or indirect effect on the environment. To begin with, this research has
mainly focused on design and development of Jam-Tolerant Electromechanical or ElectroMechanical Actuator (EMA) concepts.
Scope: Comparatively, with its Hydraulic and Pneumatic actuator counterparts, EMA’s
have potential benefits in the power efficiency, weight, and envelope sizes. However, EMA’s
has the lower reliability and one of the main parameters affecting the reliability factor is as
they are not jam tolerant. This research addresses this issue and focused on developing jam
tolerant or anti jam EMA concepts.
Methodology: Concepts for jam tolerant or anti jam EMA are proposed, then the desirable
solution is developed.
Conclusion: The developed solution has achieved the aim of jamming problem by
designing the “jam tolerant/anti jam EMA” that can be used in Primary Control Surfaces
of the aircraft. However, with the modifications to the interfaces, it has potential to use in
others such as Secondary Control Surfaces.


aviation industry, alternative actuators, primary control surfaces, jam tolerant/ anti jam EMA