In the early days of analog aircraft systems, the notion of built‐in test (BIT) was nothing more than a simple pushbutton that supplied current to the internal circuitry. If sufficient circuit continuity was detected, a green light would illuminate signifying a successful test. Known as a push‐to‐test or go/no‐go system, this simple approach sufficed for early analog systems. With the advent of digital avionics computers in the early 1980s, however, the ability to detect failures and isolate their cause to the offending component posed a significant challenge to airline mechanics and repair technicians. Working with industry, Aeronautical Radio, Inc. (ARINC) developed in 1988 the first aviation industry standard that specifically addressed health management. In the years that followed, additional industry standards were developed, driven by the advances made as new aircraft families were introduced. Even today commercial aviation has begun to adopt techniques used in other industries, for example, process control and automotive.
The introduction of standards helped give birth to the field of vehicle health management (VHM) for commercial aviation, although the acronym VHM would not come into common usage in aviation until nearly 20 years later (the space community was one of the early adopters of the acronym, appearing in the literature in the late 1980s). More recently, the term “system health management” (SHM) has been coined to emphasize both the vehicle and the system it is a part of, as discussed in Chapter 1.
This chapter reviews prominent SHM systems used primarily for maintenance in commercial aviation, but will not discuss the real‐time failure responses typically associated with flight control. For each system, a high‐level overview is provided, emphasizing the key features of the system and significant differences from previous systems. For those systems already fielded, the challenges, lessons learned, and benefits achieved are discussed. For those systems currently in development, the anticipated challenges and benefits of the new systems are discussed. Finally, a glimpse into the future direction of SHM for commercial aviation is provided, suggesting those areas in which further improvements are necessary.
Commercial Aviation Health Management
System Health Management ; 589-603
2011-07-15
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Engineering Index Backfile | 1953
Engineering Index Backfile | 1927
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|Engineering Index Backfile | 1928
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