tag:calagator.org,2005:/events/searchCalagator: Events tagged with: fault tolerance2012-05-29T10:24:02-07:00tag:calagator.org,2005:Calagator::Event/12504624102012-05-29T10:24:02-07:002012-05-29T10:24:02-07:00Why Do Airplanes Crash? Building an Open-Source Aircraft Sensor SystemTuesday, June 5, 2012 from 10:30-11:30am at Galois, Inchttp://calagator.org/events/12504624102012-06-05T10:30:00-07:002012-06-05T11:30:00-07:00<div class="vevent">
<h1 class="summary">Why Do Airplanes Crash? Building an Open-Source Aircraft Sensor System</h1>
<div class='date'><time class="dtstart dt-start" title="2012-06-05T10:30:00" datetime="2012-06-05T10:30:00">Tuesday, June 5, 2012 from 10:30</time>–<time class="dtend dt-end" title="2012-06-05T11:30:00" datetime="2012-06-05T11:30:00">11:30am</time></div>
<div class="location vcard">
<a href='/venues/202390439' class='url'>
<span class='fn org'>Galois, Inc</span>
</a>
<div class="adr">
<div class="street-address">421 SW 6th Ave. Suite 300</div>
<span class="locality">Portland</span>
, <span class="region">OR</span>
<span class="postal-code">97204</span>
<div class='country-name'>US<div>
(<a href='https://maps.google.com/maps?q=421%20SW%206th%20Ave.%20Suite%20300,%20Portland%20OR%2097204%20US'>map</a>)
</div>
</div>
<div class="description">
<p>Presented by Chris Andrew, Kayla Seliner, Mark Craig, and Trang Nguyen.</p>
<p>On October 7, 2008, the flight control system of Qantas flight 72 malfunctioned without warning. The failure caused the aircraft to violently pitch down with an acceleration of -0.8g, pitching passengers and crew into the roof of the cabin resulting in many injuries. In the investigation that followed, the malfunction was attributed to a software problem in the Air Data Inertial Reference Unit. These units are utilized on all modern passenger jets, but are proprietary devices not open to public scrutiny.</p>
<p>This capstone project develops an open source Air Data Inertial Reference Unit using four redundant Arduino boards each with a microcontroller, 3D gyroscope and accelerometer. Faults are injected into the system through software and outputs are monitored over serial ports allowing the user to test effectiveness 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 fault-tolerant system design could benefit from the diverse testing and evaluation that can occur in an open source community. This project demonstrates the low entry-cost to building a fault-tolerant system for open-source design and experimentation.</p>
</div>
<h3>Links</h3>
<ul>
<li><a class="url" href="http://corp.galois.com/blog/2012/5/29/why-do-airplanes-crash-building-an-open-source-aircraft-sens.html">Website</a></li>
</ul>
<div class="tags">
<h3>Tags</h3>
<p><a class="p-category" href="/events/tag/fault tolerance">fault tolerance</a>, <a class="p-category" href="/events/tag/galois">galois</a>, <a class="p-category" href="/events/tag/monitoring">monitoring</a>, <a class="p-category" href="/events/tag/tech talk">tech talk</a></p>
</div>
<div class='single_view_right'>
<a href='http://calagator.org/events/1250462410.ics'>Download to iCal</a>
<div id='edit_link'>
<p>You can <a href="http://calagator.org/events/1250462410/edit">edit this event</a>.</p>
</div>
<div id='metadata'>
This item was added directly to Calagator <br /><strong>Tuesday, May 29, 2012 at 10:24am</strong>.
</div>
</div>
</div>
45.5204 -122.6779