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Time Triggered Protocol (TTP) for Integrated Modular AvionicsTraditional avionics computing systems are federated, with each system provided on a number of dedicated hardware units. Federated applications are physically separated from one another and analysis of the systems is undertaken individually. Integrated Modular Avionics (IMA) takes these federated functions and integrates them on a common computing platform in a tightly deterministic distributed real-time network of computing modules in which the different applications can run. IMA supports different levels of criticality in the same computing resource and provides a platform for implementation of fault tolerance through hardware and application redundancy. Modular implementation has distinct benefits in design, testing and system maintainability. This paper covers the requirements for fault tolerant bus systems used to provide reliable communication between IMA computing modules. An overview of the Time Triggered Protocol (TTP) specification and implementation as a reliable solution for IMA systems is presented. Application examples in aircraft avionics and a development system for future space application are covered. The commercially available TTP controller can be also be implemented in an FPGA and the results from implementation studies are covered. Finally future direction for the application of TTP and related development activities are presented.
Document ID
20070001979
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Motzet, Guenter
Gwaltney, David A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Bauer, Guenther
Jakovljevic, Mirko
Gagea, Leonard
Date Acquired
August 24, 2013
Publication Date
January 1, 2006
Subject Category
Avionics And Aircraft Instrumentation
Meeting Information
Meeting: 2006 MAPLD International Conference NASA GSFC, National Security Agency, NASA Electronics Parts Program
Location: Washington, DC
Country: United States
Start Date: September 26, 2006
End Date: September 28, 2006
Distribution Limits
Public
Copyright
Other

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