<div dir="ltr">Depends on the system which is involved<div>[aka Where is AI when you really need it]<br><div><br></div><div>A while back an Air Canada 767 headed for Edmonton Alberta had to do an emergency [no engine power] landing at a former [WW2-Cold War vintage CRAF base in Gimli Manitoba] -- Google or Wikipedia the "Gimli Glider"</div><div>While the whole incident was complicated by electronic embedded system failures, as well as procedural failures -- ultimately the "crash landing" resulted from a fuel load</div><div>entered into the flight control computer in kgs but using the measurement of the fuel load in lbs -- when they took off from Montreal via Ottawa enroute to Edmonton </div><div><br></div><div>Somewhere in western Ontario they discovered that they had no fuel left -- and their engines shut down causing the plane to lose primary and backup hydraulic power </div><div>and most of the electrical power as well. The loss of primary electrical power led to the loss of the Mode S Transponder causing great grief in the en-route Air Traffic Control </div><div>Luckily -- The 767 came equipped with a ram-air turbine to drive an emergency hydraulic pump -- but this depended on the plane maintaining typical cruising speed</div><div>As they approached Gimli things didn't look too promising.</div><div><br></div><div>However -- There was manifold mostly accidental good news: </div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div>the pilot was an experienced glider pilot</div><div>his co-pilot had flown out of the Gimli air base when he was in the CRAF. </div><div>Lacking full hydraulic power the nose landing gear failed to fully descend and lock into place. </div><div>Finally, and improbably the old airbase had been converted to a motorsports park [which was if use by drag racers used to dealing with fires] with a guardrail running down the centere of the former runway</div></blockquote><div>[from the wiki article]</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">"As soon as the wheels touched down on the runway, Pearson [767 pilot] braked hard, skidding and promptly blowing out two of the aircraft's tires. The unlocked nose wheel collapsed and was forced back into its well, causing the aircraft's nose to slam into, bounce off, and then scrape along the ground. This additional friction helped to slow the airplane and kept it from crashing into the crowds surrounding the runway. Pearson applied extra right brake, which caused the main landing gear to straddle the guardrail. Air Canada Flight 143 came to a final stop on the ground <b>17 minutes after running out of fuel</b><br>No serious injuries occurred among the 61 passengers or the people on the ground. As the aircraft's nose had collapsed onto the ground, its tail was elevated, so some minor injuries happened when passengers exited the aircraft via the rear slides, which were not sufficiently long to accommodate the increased height. A minor fire in the nose area was extinguished by racers and course workers equipped with portable fire extinguishers.</blockquote><div><br></div><div>So sometimes even if you don't know your kgs from your feet or whatever -- you may still luck-out</div><div><br></div><div>Ted</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 5, 2023 at 5:30 PM David Lees <<a href="mailto:joeoptics@gmail.com">joeoptics@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="auto">Yea, the metric - English units disaster. Why metric units should always be used unless you are buying beer 😜</div><div dir="auto"><br></div><div dir="auto"><a href="https://www.popularmechanics.com/space/moon-mars/news/a28632/the-dumb-mistake-that-doomed-a-mars-probe-in-1999/" target="_blank">https://www.popularmechanics.com/space/moon-mars/news/a28632/the-dumb-mistake-that-doomed-a-mars-probe-in-1999/</a><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 5, 2023, 4:06 PM Ted Kochanski <<a href="mailto:tedpkphd@gmail.com" rel="noreferrer" target="_blank">tedpkphd@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">All,<div><br></div><div>Remember -- Mars has a tendency of inducing conversion errors </div><div>Google for yourself how many of these</div><div><br></div><div>Ted</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jul 5, 2023 at 3:59 PM George Gamota <<a href="mailto:ggamota@gmail.com" rel="noreferrer noreferrer" target="_blank">ggamota@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">You guys are right. Need stronger glasses :-) <br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Jul 5, 2023, at 2:51 PM, Dick Miller <<a href="mailto:TheMillers@millermicro.com" rel="noreferrer noreferrer" target="_blank">TheMillers@millermicro.com</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
<font face="DejaVu Serif">George, it will take more than a century
for that rover to travel that distance. That is, if the likelihood
of mechanical breakdown - or a Martian monster - doesn't come
first.<br>
<br>
It has traveled about 1.2 miles so far. In the article you cited,
those were American decimal points, not European ones.<br>
</font>
<div>
<br>
<font face="DejaVu Serif,Times New Roman,times,serif" color="#000000"> Cheers from<br>
--Dick Miller, Partner, MMS <<a href="mailto:TheMillers@millermicro.com" rel="noreferrer noreferrer" target="_blank">TheMillers@millermicro.com</a>></font>
<br>
<br>
<font face="DejaVu Serif,Times New Roman,times,serif" color="#000000"> Sent from an awesome, inexpensive, <a href="https://www.gnu.org/proprietary/" rel="noreferrer noreferrer" target="_blank">non-proprietary</a>,
no-lock-in, no-bloatware, virus-resistant, <a href="http://NatickFOSS.org/" rel="noreferrer noreferrer" target="_blank">free open-source software, <i>Linux</i></a>
PC - with <a href="https://ubuntuunity.org" rel="noreferrer noreferrer" target="_blank"><i>Ubuntu-Unity
23.04</i></a> and <a href="http://www.kornelix.net/fotoxx/fotoxx.html" rel="noreferrer noreferrer" target="_blank"><i>Fotoxx
23.50</i></a>.<br>
<br>
</font><font face="DejaVu Serif,Times New Roman,times,serif" color="#000000"><br>
</font> </div>
<div>On 7/5/23 14:15, Donald Cooke wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">That's a long way. Wikipedia has another opinion,
Meters, not Kilometers:
<div><div><image.png></div><br>
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div style="text-align:left">
<div style="text-align:left"> <img src="https://lh5.googleusercontent.com/avAY6IS9k0fcFjdhNWxfcF2HGlXfQj0qco81OwnmQ0Ur7T8IkjBU2i6rSnKpDvI2d7oGuzZmqhAioVuXk-WtqiihbHHb2B0OyhCKu11DDdoE8RzMlJRo9pVpyDDFDqBJ7PyMxAc0" style="background-color: transparent; color: rgb(0, 0, 0); font-family: Arial; font-size: 11pt; white-space: pre-wrap; margin-left: 0px; margin-top: 0px;" title="" width="122" height="72">
</div>
Don Cooke #523 603.219.9259</div>
</div>
</div>
</div>
<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Wed, Jul 5, 2023 at
10:57 AM <<a href="mailto:ggamota@gmail.com" rel="noreferrer noreferrer" target="_blank">ggamota@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<div lang="EN-US">
<div>
<p class="MsoNormal"><span style="font-size:14pt">I just
saw that the Chinese rover on Mars traveled over 1,
100 miles in one year. Seems like they figured out a
way to travel autonomously. </span></p>
<p class="MsoNormal"><span style="font-size:14pt">Any
thoughts?</span></p>
<p class="MsoNormal"><span style="font-size:14pt">George</span></p>
<p class="MsoNormal"><span style="font-size:14pt"> </span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:Arial,sans-serif;color:rgb(21,21,21);background:rgb(237,237,237)">The
Zhurong rover has operated on the surface of Mars
for over a year since it deployed on May 22nd, 2021.
Before the rover suspended operations on May 20,
2022, due to the onset of winter and the approach of
seasonal sandstorms, Zhurong managed to traverse a
total distance of 1.921 km (1.194 mi).</span><span style="font-size:18pt"></span></p>
</div>
</div>
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</blockquote></div><div>David Lees <br>From Pixel 6 Pro</div></div>
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