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ARP6025 - Duty Cycle Considerations for EHA

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Document Number: ARP6025
Project Initiation: 01-22-2009
Project Number:
Revision Number:
Sponsor Name: Brian Peirce Barker
Title
Duty Cycle Considerations for EHA
Scope
This standard establishes a common rationale by which actuation duty cycles can be reduced and assessed for EHAs.
Rationale
Life-limiting factors for the EHA differ greatly from those of conventional servoactuators, in particular because the hydraulic pump is commonly the life-limiting component. The pump is subject to wear and fatigue in ways that a servo-controlled ram is not. The standard will provide airframers and EHA designers a rational method for evaluating actuation duty cycles on the basis of their effects on the pump and motor, and permit design of endurance tests on that basis.
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