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- Title
Degradation Identification of an EHA Piston Pump by Analysis of Load-Holding States.
- Authors
Duensing, Yannick; Merkel, Amos; Schmitz, Katharina
- Abstract
In pursuit of advancing the development of more electric aircraft, the present research explores the forefront capabilities of electro-hydrostatic actuators (EHAs) as potential replacements for conventional hydraulic flight control systems. EHAs are currently used primarily as backup options due to their limited durability. As of now, the high dynamic axial piston pump is the main cause of the limited longevity of the EHA, due to strong tribological wear. The primary objective of this investigation is the identification of parameters and pump behavior to determine the current wear of the pump, as well as providing valuable insights into run-ins, temperature dependencies, and wear-related efficiency losses for future pump improvements. In the scope of this paper, the design of EHAs is explained in detail and the impact of challenging working conditions on the health status of the pump by comprehensive analysis of load-holding modes is examined. The experimental data for analysis is conducted on a longevity test bench with test profiles specifically designed to simulate real-world operational scenarios.
- Subjects
RECIPROCATING pumps; HYDRAULIC control systems; FLIGHT control systems; PARAMETER identification; OPTICAL pumping; WORK environment; BLAST effect
- Publication
Fluids, 2024, Vol 9, Issue 1, p14
- ISSN
2311-5521
- Publication type
Article
- DOI
10.3390/fluids9010014