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【范围】
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SAE Aerospace Information Report AIR1871 provides valuable insight into lessons learned in the development,
implementation, and operation of various health monitoring systems for propulsion engines and drive train systems. This
document provides an overview of the lessons learned for ground-based systems, oil debris monitoring systems,
lubrication systems, and Health and Usage Monitoring Systems (HUMS) for military and commercial programs. For each
case study, this document presents a brief technical description, the design requirements, accomplishments, lessons
learned, and future recommendations.
The lessons learned presented in this document represent a fragment of the knowledge gained through experience when
developing and implementing a propulsion health management system. Previous versions of this document contain
additional lessons learned during the 1980’s and 1990’s that may be of additional value to the reader. This document will
be maintained as technology progresses so that industry members may benefit from the lessons learned of others.
1.1 Purpose
This AIR is not intended to be used as a standard or legal document but rather provide an objective statement of the more
important lessons learned during the development and operation of the health monitoring systems with widely varying
operational requirements. It is through the use of ARP1587 and SP-478, an awareness of prior lessons learned and a
clear definition of engine operational maintenance concepts that future health monitoring systems can be developed to
meet the specific needs of the user.
1.2 Approach
Health monitoring systems vary from a simple single system montor to full propulsion system and drive train HUMS.
Health monitoring systems may be fully onboard the aircraft or may include on-ground systems requiring data
transmission from the aircraft. This document begins with single system monitoring, oil debris montoring and fluid system
monitoring, and progresses to the more complex, integrated HUMS.
The approach selected in preparing these lessons learned was through the review of available technical presentations
and papers covering the development work and through personal interviews conducted with knowledgeable government
and industry personnel directly involved with each of the case studies. In most cases, the responsible engineer from the
government and/or from industry collaborated in preparing the initial draft for each case study. The SAE E32 Aerospace
Propulsion Systems Health Management Committee then worked jointly with these individuals to edit and prepare the
final draft. This final draft was then reviewed by the participating organizations prior to release for publication to ensure
technical accuracy and clarity of content.strRefField
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