Accession Number : ADP005772

Title :   A Highly Reliable Computer for Airborne Applications,

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)

Personal Author(s) : Muenier, Michel

Report Date : JUN 1988

Pagination or Media Count : 6

Abstract : This paper highlights the reliability features of the CMF (Calculateur Militaire Francais) AIR embedded computer supporting its operational software. This computer was designed to meet the requirements of the ACE (Avion de Combat European)/RAFALE D aircraft. For this reason, it has to be highly dependable, to satisfy severe physical requirements (size, weight, power consumption, etc.) and to support real-time software execution (this software being written in high-level languages such as Ada and LTR3 (a French Pascal-like real-time language). The general structure of the computer is first presented, emphasis being placed on the technological choices (for example, the use of application specific integrated circuits). The various protective mechanisms provided at the level of the machine (hardware and microcode) and then presented: data access control and code execution control. Finally, a short presentation of the software production environment is given. Compromises made between operational dependability and performance characteristics are also summarized.

Descriptors :   *DIGITAL COMPUTERS, MILITARY AIRCRAFT, RELIABILITY(ELECTRONICS), AVIONICS, INTEGRATED CIRCUITS, CENTRAL PROCESSING UNITS, EMBEDDING, REAL TIME, INPUT OUTPUT PROCESSING, FRANCE.

Subject Categories : Computer Hardware
      Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE