On Upsets of Analog Portions of Digital Flight Control Systems Due to Electromagnetic Interference

Format:

Conference/Event

Author/Creator:

Clough, Bruce T., author.

Conference Name:

Aerospace Technology Conference & Exposition (1991-09-23 : Long Beach, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

AbstractRecent concerns about the susceptibility of digital flight control systems (DFCS) to electromagnetic interference (EMI) have lead to testing a representative DFCS for upset from possible carrier signal modulations. Tests performed on the analog inputs of a DFCS have confirmed the following traits:The above implies that the analog sections of a modern DFCS will not be upset by radar or other high power pulsed radiofrequency (RF) sources. High power commercial broadcasting stations can be a concern if and only if the detected signal levels are large enough to trip sensor health monitors, and these levels can be determined by examining system specifications. If EMI caused upsets are deemed a great problem, modifying the redundancy management system to handle multiple-correlated failures will be required to avoid misdiagnosis. Future tests will examine the ability of the fault-tolerant digital sections of the DFCS to be upset by EMI modulations

Notes:

Vendor supplied data

Publisher Number:

912144

Access Restriction:

Restricted for use by site license