<div dir="ltr"><div><p id="eow-description" class="" style="font-size:13px;color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;line-height:17px;margin:0px;padding:0px;border:0px;background-image:initial;background-color:transparent;background-repeat:initial"><a href="http://www.siemens.com/press/electric-aircraft">www.siemens.com/press/electric-aircraft</a></p><p id="eow-description" class="" style="font-size:13px;color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;line-height:17px;margin:0px;padding:0px;border:0px;background-image:initial;background-color:transparent;background-repeat:initial"></p><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="font-family:Arial,Geneva,Helvetica,sans-serif;font-size:11px;line-height:16px"><b>"This is the first time that an electric aircraft in the quarter-megawatt performance class has flown."</b></span></blockquote><p></p></div><div><br></div><a href="https://www.youtube.com/watch?v=fiu8TFnXYFY">https://www.youtube.com/watch?v=fiu8TFnXYFY</a><div><br class=""><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;font-size:13px;line-height:17px">In a big leap for the electrification of aviation, an Extra Aircraft aerobatic plane performed its maiden flight with an electric powertrain. The crucial component was a world record motor from Siemens. Weighing a mere 50 kilograms, the motor has an output of 260 kilowatts, resulting in an unparalleled power-to-weight ratio.</span></blockquote>
<div><div id="watch-description-text" class="" style="margin:0px;padding:0px;border:0px;background-image:initial;background-repeat:initial"><p id="eow-description" class="" style="color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;font-size:13px;line-height:17px;margin:0px;padding:0px;border:0px;background-image:initial;background-color:transparent;background-repeat:initial"></p><div> </div><div>Datasheet: <a href="http://www.siemens.com/press/pool/de/feature/2015/corporate/2015-03-electromotor/factsheet-erstflug-weltrekordmotor-d.pdf">http://www.siemens.com/press/pool/de/feature/2015/corporate/2015-03-electromotor/factsheet-erstflug-weltrekordmotor-d.pdf</a><br></div><p></p><div style="color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;font-size:13px;line-height:17px"><br></div><div><font color="#333333" face="Roboto, arial, sans-serif"><span style="line-height:17px"><a href="https://transportevolved.com/2016/07/08/siemens-showcases-brand-new-electric-motor-thats-super-light-super-powerful-and-perfect-for-electric-airplanes/">https://transportevolved.com/2016/07/08/siemens-showcases-brand-new-electric-motor-thats-super-light-super-powerful-and-perfect-for-electric-airplanes/</a></span></font><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px">Of course, electric motors have long been used in model planes, but their use outside the 1:14</span><sup style="color:rgb(59,59,59);font-family:Ubuntu">th</sup><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px"> scale aeromodelling arena has been somewhat limited due to the mechanics of making a sufficiently large, powerful, & lightweight electric motor. And while we’ve seen some very successful electric planes take to the sky, most have been custom-made, super-lightweight affairs which while impressive, have yet to make their mark on a wider scale.</span></blockquote><div><br></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex" class="gmail_quote">Many of the benefits of electric motive power for aircraft are ones that any EV driver will be familiar with: quieter, lower maintenance, greater efficiency. Benefits that are shared with the community too in this case – as with increasing air travel areas around airports have become increasingly polluted – both by noise and by noxious residues from burning fossil fuels.<br></blockquote><div> </div><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex" class="gmail_quote">But there are also other benefits that are deeply exciting for aeronautical engineers and pilots.</blockquote><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:1.6">Unlike fossil fuel powered engines, electric motors really don’t care which way is up. They operate the same upside-down as they do the right way up — they don’t stall and fuss with fuelling issues when you turn them over. They also perform the same at 40,000 feet as they do at 4 feet. Traditional engines require complex mixture and timing adjustments to keep them performing well in the thin atmosphere in which they spend much of their lives.</span></blockquote><div> </div><div>about the airplane,</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px">Based on a thoroughly modern, but not deeply exceptional structure – with a mixture of a steel fuselage and carbon fibre wings, the Extra is itself a popular aerobatic model</span></blockquote><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(51,51,51);font-family:Arial,Geneva,Helvetica,sans-serif;font-size:11px;line-height:16px">The Extra 330LE, which weighs nearly 1,000 kilograms, serves as a flying test bed for the new propulsion system. As an aerobatic airplane, it's particularly well suited for taking the components to their limits, testing them and enhancing their design.</span> </blockquote><div><br></div><div>the future</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(51,51,51);font-family:Arial,Geneva,Helvetica,sans-serif;font-size:11px;line-height:16px">Electric drives are scalable, and Siemens and Airbus will be using the record-setting motor as a basis for developing regional airliners powered by hybrid-electric propulsion systems. "By 2030, we expect to see initial aircraft with up to 100 passengers and a range of around 1,000 kilometers," explained Anton.</span></blockquote><div><br></div><div><br></div><div>I love this anecdote about intelligent analysis tools in CAD. (<b>hi cad-discuss, that's why you're cc'd :]</b> )</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px">The end-shield for the motor, for example, was analyzed using a <b>software package</b> that divided the component into over 100,000 elements, each of which was individually further stress-analyzed and subject to<b> iterative improvement loops.</b> Eventually, the custom software spat out a filigree structure that weighs 4.9kg instead of the 10.5kg from the previous design.</span><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px"> </span> </blockquote><div> </div><div>more about the motor <a href="http://phys.org/news/2015-04-world-record-electric-motor-aircraft.html">http://phys.org/news/2015-04-world-record-electric-motor-aircraft.html</a></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(0,0,0);font-family:Arial,Helvetica,sans-serif;font-size:14px">Siemens researchers have developed a new type of electric motor that, with a weight of just 50 kilograms, delivers a<b> continuous output of about 260 kilowatts – five times more than comparable drive systems.</b> The motor has been <b>specially designed</b> for use in aircraft. Thanks to its record-setting power-to-weight ratio, larger aircraft with <b>takeoff weights of up to two tons</b> will now be able to<b> use electric drives for the first time.</b></span><br></blockquote><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(0,0,0);font-family:Arial,Helvetica,sans-serif;font-size:14px">New simulation techniques and sophisticated lightweight construction enabled the drive system to achieve a unique weight-to-performance ratio of five kilowatts (kW) per kilogram (kg). <b>The electric motors of comparable strength that are used in industrial applications deliver less than one kW per kg. The performance of the drive systems used in electric vehicles is about two kW per kg.</b> Since the new motor delivers its record-setting performance at rotational speeds of just<b> 2,500 revolutions per minute, it can drive propellers directly, without the use of a transmission.</b></span><br style="color:rgb(0,0,0);font-family:Arial,Helvetica,sans-serif;font-size:14px"><br style="color:rgb(0,0,0);font-family:Arial,Helvetica,sans-serif;font-size:14px"><span style="color:rgb(0,0,0);font-family:Arial,Helvetica,sans-serif;font-size:14px">In the next step, the Siemens researchers will boost output further. "We're convinced that the use of hybrid-electric drives in regional airliners with 50 to 100 passengers is a real medium-term possibility," said Anton.</span></blockquote><div><br></div><div><br></div><div>this might be what the motor looks like? not sure</div><div><a href="https://youtu.be/j3cNLsN-eCM?t=31s">https://youtu.be/j3cNLsN-eCM?t=31s</a><br></div><div><img src="cid:ii_155ddcc59ed56c5c" alt="Inline image 1" width="413" height="263"><br></div><div><br></div><div> </div><div><div> </div><div><font size="4">about the Siemens and electric dirigibles (?!)</font></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"> </blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px">Siemens current motor is sufficient to power a small 4-seater aircraft by itself. Indeed, it would be “quite racy” suggest Siemens in that application. And Siemens is keen to point out that the motor is <b>nearing the power requirements for small regional airliners. </b>Of course if anyone would know about aeronautical electric motors it really ought to be Siemens, given that it was its electric motor that (back in 1881) </span><a href="https://archive.org/details/lesballonsdirig00tissgoog" style="color:rgb(33,58,122);text-decoration:none;line-height:22.4px;font-family:Ubuntu;font-size:14px">powered the <b>first electric dirigible</b></a><span style="color:rgb(59,59,59);font-family:Ubuntu;font-size:14px;line-height:22.4px"><b>.</b></span></blockquote><div> </div></div><div style="color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;font-size:13px;line-height:17px">Also check out this amazing scan of an<b> 1885 book about electric dirigibles</b>. (<a href="http://archive.org">archive.org</a>'s ebook software is on-point!)</div><div><font color="#333333" face="Roboto, arial, sans-serif"><span style="line-height:17px"><a href="https://archive.org/details/lesballonsdirig00tissgoog">https://archive.org/details/lesballonsdirig00tissgoog</a></span></font><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><font color="#333333" face="Roboto, arial, sans-serif"><span style="line-height:17px">Dirigibles: application of electricity to air navigation</span></font></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">by Gaston Tissandier <br>Published 1885 <br>Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.</blockquote><div><br></div><div><br></div><div>Thanks,</div><div>--Nancy </div></div><div id="watch-description-extras" style="margin-top:8px;margin-right:0px;margin-left:0px;padding:0px;border:0px;font-size:13px;color:rgb(51,51,51);font-family:Roboto,arial,sans-serif;line-height:17px;margin-bottom:0px!important;background-image:initial;background-repeat:initial"><ul class="" style="list-style:none;margin:0px;padding:0px;border:0px;background:transparent"><li class="" style="margin:0px;padding:0px;border:0px;clear:both;background:transparent"></li></ul></div></div></div></div>