Abstract
The technological growth of ‘avionics systems’ has outpaced the service-life of aircraft, resulting in avionics upgrade as a preferred cost-effective option to new design. Mid-life upgrade of “avionics systems“ by state-of-the-art mission systems has been a challenging engineering task. The complexity of avionics upgrade process is due to the design rigidity of avionics systems architecture. An avionics architecture with growth potential is required to optimise avionics upgrade with state-of-the-art systems. A research program that partially addresses avionics systems upgrade by developing a methodology to design an avionics architecture with in-built growth potential is discussed in this research paper. A ‘system approach’ is adopted to develop a methodology that identifies the design parameters that will facilitate design of an avionics architecture with upgrade potential.
Highlights
2 System MethodologyDuring the service life of military aircraft, advances in avionics technology render certain systems onboard either obsolete or of limited capability, compared to a state-of-the-art system
The major challenge in an avionics upgrade design process is the integration of an advanced system with the systems already onboard
A new design approach, named Integrated Modular Avionics (IMA), is an attempt to deal with the current design drawbacks of avionics architecture and to address the problem of technology insertion [4], [5]
Summary
During the service life of military aircraft, advances in avionics technology render certain systems onboard either obsolete or of limited capability, compared to a state-of-the-art system. A design methodology needs to be developed for an avionics architecture with upgrade potential, from a system perspective – one that will holistically address all design parameters and constraints, including technological insertion [6]. Keeping the provisions of technological insertion as the focus, the functions of the AUS to be structured are as follows: l Identify state-of-the art avionics systems; l Formulate technological growth parameters; l Identify the avionics architecture parameters of the aircraft system; and l Integrate growth and architecture parameters to identify the design parameters of ASA-UP. The AUS structure identifies the need for four components – two analysers, an integrator, and a tester and validator – to aid the design of an ASA-UP The components and their stated functions are as follows:.
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