BEGIN:VCALENDAR PRODID;X-RICAL-TZSOURCE=TZINFO:-//Calagator//EN CALSCALE:GREGORIAN X-WR-CALNAME:Calagator METHOD:PUBLISH VERSION:2.0 BEGIN:VTIMEZONE TZID;X-RICAL-TZSOURCE=TZINFO:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20120311T020000 RDATE:20120311T020000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 TZNAME:PDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT CREATED;VALUE=DATE-TIME:20120529T172402Z DTEND;TZID=America/Los_Angeles;VALUE=DATE-TIME:20120605T113000 DTSTART;TZID=America/Los_Angeles;VALUE=DATE-TIME:20120605T103000 DTSTAMP;VALUE=DATE-TIME:20120529T172402Z LAST-MODIFIED;VALUE=DATE-TIME:20120529T172402Z UID:http://calagator.org/events/1250462410 DESCRIPTION:Presented by Chris Andrew\, Kayla Seliner\, Mark Craig\, and Trang Nguyen. \;\n \;\nOn October 7\, 2008\, the flight control s ystem of Qantas flight 72 malfunctioned without warning. The failure cau sed the aircraft to violently pitch down with an acceleration of -0.8g\, pitching passengers and crew into the roof of the cabin resulting in ma ny injuries. In the investigation that followed\, the malfunction was at tributed to a software problem in the Air Data Inertial Reference Unit. These units are utilized on all modern passenger jets\, but are propriet ary devices not open to public scrutiny. \;\n \;\nThis capstone pr oject develops an open source Air Data Inertial Reference Unit using fou r redundant Arduino boards each with a microcontroller\, 3D gyroscope an d accelerometer. Faults are injected into the system through software an d outputs are monitored over serial ports allowing the user to test effe ctiveness of fault-tolerant algorithms to mask fail silent and byzantine faults in the sensors. Failures in ADIRU systems are usually complex in nature and arise under very anomalous circumstances suggesting that fau lt-tolerant system design could benefit from the diverse testing and eva luation that can occur in an open source community. This project demonst rates the low entry-cost to building a fault-tolerant system for open-so urce design and experimentation.\n\nTags: galois\, monitoring\, tech tal k\, fault tolerance\n\nImported from: http://calagator.org/events/125046 2410 URL:http://corp.galois.com/blog/2012/5/29/why-do-airplanes-crash-building -an-open-source-aircraft-sens.html SUMMARY:Why Do Airplanes Crash? Building an Open-Source Aircraft Sensor S ystem LOCATION:Galois\, Inc: 421 SW 6th Ave. Suite 300\, Portland OR 97204 US SEQUENCE:1 END:VEVENT END:VCALENDAR