Multi function multi mode digital avionics mmda
1 / 9

Multi-Function Multi-mode Digital Avionics (MMDA) - PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

Multi-Function Multi-mode Digital Avionics (MMDA). NASA Glenn Research Center – End of FY05 Status Presented to ICAO ACP WGC-11 GRC/James Budinger September 20, 2006. Multi-Function Multi-mode Digital Avionics (MMDA). Objective

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

Multi-Function Multi-mode Digital Avionics (MMDA)

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

Multi-Function Multi-mode Digital Avionics (MMDA)

NASA Glenn Research Center – End of FY05 Status

Presented to ICAO ACP WGC-11

GRC/James Budinger

September 20, 2006

Multi-Function Multi-mode Digital Avionics (MMDA)

  • Objective

    • Develop and demonstrate in a relevant environment a Multi-function, Multi-mode Digital Avionics (MMDA) prototype that illustrates lower total system cost and faster certification and re-certification process

      • Multi-mode: The integration of similar modes of operation of a single avionics C,N, or S function

      • Multi-function: The integration of multiple CNS functions

MMDA Rationale

  • Rationale for a new approach:

    • Existing certification methodologies are expensive and based on proprietary methodologies

      • A new, cost-effective methodology to certify avionics is needed for both initial and subsequent for added waveforms (reduced maintenance cost)

    • Software defined avionics are a technology enabler for migration of mobile network centric operations into the NAS

      • MMDA can serve as an agent of change enabling transitional architectures, network enabled operations, and NGATS concepts

MMDA Approach

  • NASA/FAA/Industry joint venture:

    • Work with avionics industry partners and standards bodies/working groups and certification authorities

    • Develop an open hardware and software MMDA architecture for civil aviation applications

    • Design and develop an MMDA prototype for a selected suite of CNS functions and/or modes in a relevant environment

    • Validate and demonstrate compliance with redundancy, certification, security and safety standards and requirements

Pathfinder MMDA Prototype

Classes aircraft, reduce equipage, functions and modes, etc …

Concept of Use


State of art, commercial tech., fault mitigation and graceful degradation, etc …

Barriers to market entry, 2012-2020 context





Open Architecture


Business Case




Leverage open source and JTRS architectures,

Flexible and open based architecture, etc …

Aware of standards and working groups,

path towards modular certification,

reduce cert. and re-cert. costs, etc ...

Work with FAA on methodology developed,

validate design and methodology, etc …

Open Architecture Challenges

  • A flexible, open and extendable architecture must:

    • Lower total system cost and reduce time for certification and re-certification

    • Address the number of waveforms (both new and legacy) that are beginning to overwhelm ability to fit aircraft with new capabilities

    • Leverage best commercial standards and innovations in implementation as they emerge over time

    • Provide flexibility for users to decide which capabilities they need and when

MMDA Notional Architecture





RF Front






Legacy Interface






MMDA Accomplishments(Project terminated at end of FY05)

  • Contracted preliminary assessment and analysis

    • See multiple contractor technical reports under the “Resources” tab at the ACAST Website:

  • Established government and industry contacts

    • AEEC, FAA, DOD JTRS program office, RTCA SC-200 working groups and standards bodies, and Boeing, Honeywell, and Rockwell Collins

  • Initiated and chaired the Avionics Special Interest Group under SDR (Software Defined Radio) Forum

    • See avionics SIG vision, goals and glossary documents under “Document Library” tab at

MMDA Plan Forward

  • Seek new government sponsor and select industry partner(s)

  • Coordinate with FAA and Eurocontrol on Flexible Onboard Architecture efforts

  • Invite comments and suggestions to proceed

  • Login