This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Thermal Modelling of a Flight-Critical Electrohydrostatic Actuator
Annotation ability available
Sector:
Language:
English
Abstract
The use of electric actuators, such as electro-hydrostatic actuators (EHA), for moving flight control surfaces is an integral part of the more-electric aircraft (MEA) concept to replace inefficient, centralized hydraulic systems with power-on-demand electrical systems. Removing the centralized hydraulic system will, however, eliminate an effective heat transfer network, thus resulting in an aircraft with less overall heat to reject but with localized “hot spots.” Under the Air Force MEA Thermal Management program, Northrop Grumman is assessing the cooling requirements for an MEA version of the F/A-18 aircraft through detailed thermal modelling and computer simulation. Lumped-parameter EHA thermal models have been developed to characterize component heat transfer within their operating environments using realistic actuator duty cycles generated from six-degree-of-freedom (6-DOF) aircraft simulation. This paper summarizes the thermal modelling effort and its utility in designing a thermal control solution for a flight-critical stabilator EHA.
Recommended Content
Technical Paper | Test Evaluation of an Affordable Fighter Aircraft Vapor Cycle System |
Technical Paper | FLASH Electrohydrostatic Actuation Modeling, Analysis, and Test Results |
Technical Paper | International Space Station Alpha Design-To-Freeze Radiators |
Authors
Topic
Citation
Chen, W., Lin, T., Hill, B., and Brown, J., "Thermal Modelling of a Flight-Critical Electrohydrostatic Actuator," SAE Technical Paper 951403, 1995, https://doi.org/10.4271/951403.Also In
References
- Shah N.M. Rohr Kenneth Mahood Levelle Gerrard Peter “More-Electric F/A-18 Cost Benefits Study,” May 1992
- Shah N.M. Walia P.S. Cleek K.J. Chen W. Loweree F.H. “MADMEL - Phase II Report,” July 1994
- F/A-18 Technical Manual Organizational Maintenance February 1993
- Holman J.P. Heat Transfer 4th McGraw Hill 1976