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— power_of_evolution:evolution_engineering_comparison:energy_efficiency_of_the_spirit_of_butts_farm [2022/09/21 07:37] (current)
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 +====== Energy efficiency of The Spirit of Butt’s Farm ======
 +
 +// Published 18 November, 2020; last updated 10 December, 2020 //
 +
 +
 +
 +<HTML>
 +<p>The Spirit of Butt’s Farm:</p>
 +</HTML>
 +
 +
 +<HTML>
 +<ul>
 +<li><div class="li">covered around 31.67 m/kJ</div></li>
 +<li><div class="li">and moved mass at around 0.16 – 0.086 kg⋅m/J</div></li>
 +</ul>
 +</HTML>
 +
 +
 +===== Details =====
 +
 +
 +<HTML>
 +<p>The Spirit of Butt’s Farm was a record setting model airplane that crossed the Atlantic on one gallon of fuel.<span class="easy-footnote-margin-adjust" id="easy-footnote-1-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-1-2759" title='&amp;#8220;&lt;em&gt;&lt;strong&gt;The Spirit of Butts&amp;#8217; Farm&lt;/strong&gt;&lt;/em&gt;&amp;nbsp;(also known as&amp;nbsp;&lt;strong&gt;TAM 5&lt;/strong&gt;) was the first&amp;nbsp;&lt;a href="https://en.wikipedia.org/wiki/Model_aircraft"&gt;model aircraft&lt;/a&gt;&amp;nbsp;to cross the&amp;nbsp;&lt;a href="https://en.wikipedia.org/wiki/Atlantic_Ocean"&gt;Atlantic Ocean&lt;/a&gt;&amp;nbsp;on August 11, 2003&amp;#8230;Fuel tank: Approx. 118 US fluid ounces (3.5 l)&amp;#8221; [118 US fluid ounces = 0.92 US liquid gallons according to Google] &lt;p&gt;“&lt;em&gt;The Spirit of Butts’ Farm&lt;/em&gt;.” In &lt;em&gt;Wikipedia&lt;/em&gt;, September 29, 2019. &lt;a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855"&gt;https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855&lt;/a&gt;.'><sup>1</sup></a></span> Fully fueled it weighed 4.987 kg, dry it weighed 2.705 kg.<span class="easy-footnote-margin-adjust" id="easy-footnote-2-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-2-2759" title='From Wikipedia:&lt;/p&gt; &lt;figure class="wp-block-table is-style-regular"&gt;&lt;table&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td&gt;Weight:&lt;/td&gt;&lt;td&gt;Dry: 5.96&amp;nbsp;lb (2.705&amp;nbsp;kg); Fully fueled: 10.99&amp;nbsp;lb (4.987&amp;nbsp;kg)&lt;sup&gt;&lt;a href="https://en.wikipedia.org/wiki/The_Spirit_of_Butts%27_Farm#cite_note-FAIappl-11"&gt;[11]&lt;/a&gt;&lt;/sup&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;/figure&gt; &lt;p&gt;“&lt;em&gt;The Spirit of Butts’ Farm&lt;/em&gt;.” In &lt;em&gt;Wikipedia&lt;/em&gt;, September 29, 2019. &lt;a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855"&gt;https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855&lt;/a&gt;.'><sup>2</sup></a></span></p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>The record setting flight used 117.1 fluid ounces of fuel.<span class="easy-footnote-margin-adjust" id="easy-footnote-3-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-3-2759" title='&amp;#8220;The flight used 99.2% of its fuel&amp;#8230;Fuel tank: Approx. 118 US fluid ounces (3.5 l)&amp;#8221;&lt;br&gt;&lt;br&gt;“&lt;em&gt;The Spirit of Butts’ Farm&lt;/em&gt;.” In &lt;em&gt;Wikipedia&lt;/em&gt;, September 29, 2019. &lt;a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855"&gt;https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855&lt;/a&gt;.&lt;br&gt;&lt;br&gt;Multiplying these values we find that the vehicle crossed the Atlantic using 99.2%*118 = 117.1 fluid ounces'><sup>3</sup></a></span> The straight line distance of the flight was 3,028.1 km.<span class="easy-footnote-margin-adjust" id="easy-footnote-4-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-4-2759" title='&amp;#8220;It was recognized by the FAI as a double world record[2] flight for its duration of 38h 52 min 19 sec[3] and straight-line distance of 1,881.6 mi (3,028.1 km) using an autopilot,[4]&amp;#8230;&amp;#8221;&lt;/p&gt; &lt;p&gt;“&lt;em&gt;The Spirit of Butts’ Farm&lt;/em&gt;.” In &lt;em&gt;Wikipedia&lt;/em&gt;, September 29, 2019. &lt;a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855"&gt;https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855&lt;/a&gt;.'><sup>4</sup></a></span> It was powered by 88% Coleman lantern fuel, mixed with lubricant.<span class="easy-footnote-margin-adjust" id="easy-footnote-5-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-5-2759" title='From Wikipedia:&lt;/p&gt; &lt;figure class="wp-block-table is-style-regular"&gt;&lt;table&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td&gt;Fuel:&lt;/td&gt;&lt;td&gt;&lt;a href="https://en.wikipedia.org/wiki/Coleman_fuel"&gt;Coleman lantern fuel&lt;/a&gt;&amp;nbsp;with 16&amp;nbsp;US&amp;nbsp;fl&amp;nbsp;oz (470&amp;nbsp;ml) of Indopol L-50 lubricant additive per 1&amp;nbsp;US&amp;nbsp;gal (3,785&amp;nbsp;ml). Single fuel tank in the fuselage at the CG point&amp;nbsp;&lt;sup&gt;&lt;a href="https://en.wikipedia.org/wiki/The_Spirit_of_Butts%27_Farm#cite_note-barnardmicro-12"&gt;[12]&lt;/a&gt;&lt;/sup&gt;&amp;nbsp;(normal:&amp;nbsp;&lt;a href="https://en.wikipedia.org/wiki/Alcohol"&gt;alcohol&lt;/a&gt;)&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;/figure&gt; &lt;p&gt;“&lt;em&gt;The Spirit of Butts’ Farm&lt;/em&gt;.” In &lt;em&gt;Wikipedia&lt;/em&gt;, September 29, 2019. &lt;a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855"&gt;https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;amp;oldid=918639855&lt;/a&gt;.'><sup>5</sup></a></span> Coleman fuel is based on naphtha <span class="easy-footnote-margin-adjust" id="easy-footnote-6-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-6-2759" title='&amp;#8220;&amp;#8230;Coleman Camp Fuel, which is a common naphtha-based fuel used in many lanterns and stoves&amp;#8221;&lt;/p&gt; &lt;p&gt;“Coleman Fuel.” In &lt;em&gt;Wikipedia&lt;/em&gt;, August 22, 2019. &lt;a href="https://en.wikipedia.org/w/index.php?title=Coleman_fuel&amp;amp;oldid=911926038"&gt;https://en.wikipedia.org/w/index.php?title=Coleman_fuel&amp;amp;oldid=911926038&lt;/a&gt;.'><sup>6</sup></a></span>, so we can use the energy density of naphtha—31.4 MJ/L<span class="easy-footnote-margin-adjust" id="easy-footnote-7-2759"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-7-2759" title='&amp;#8220;&lt;/p&gt; &lt;figure class="wp-block-table is-style-regular"&gt;&lt;table&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td&gt;&lt;strong&gt;Liquid Fuel&lt;/strong&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;td&gt;&lt;strong&gt;MJ / liter&lt;/strong&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;/figure&gt; &lt;p&gt;&amp;#8230;&lt;/p&gt; &lt;figure class="wp-block-table is-style-regular"&gt;&lt;table&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td&gt;Naphtha&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;td&gt;31.4&lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;/figure&gt; &lt;p&gt;“List of Common Conversion Factors (Engineering Conversion Factors) &amp;#8211; IOR Energy Pty Ltd.” Accessed November 17, 2020. &lt;a href="http://w.astro.berkeley.edu/~wright/fuel_energy.html"&gt;http://w.astro.berkeley.edu/~wright/fuel_energy.html&lt;/a&gt;.'><sup>7</sup></a></span>—as a rough guide to its energy content, though naphtha appears to vary in its content, and it is unclear whether Coleman fuel consists entirely of naphtha.</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>From all this, we have:</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>Distance per energy = 3,028.1 km / (117.1 fl oz * 0.88 * 31.4 MJ/L)</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>= 31.67 m/kJ</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>For weight times distance per energy we will calculate a best and a worst score. To calculate the best score we will use the fully fueled weight, and to calculate the worst score we will use the dry weight. All other values are the same in both calculations. </p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>Best score:<br/>
 +<br/>
 +              Distance*mass/energy = 4.987 kg * 31.67 m/kJ</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>= 0.16 kg⋅m/J</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>(4.987 kg * 3,028.1km) / (117.1 US fluid ounces * 31.4MJ/litre) = 0.1389 kg*m/j</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>Worst score:</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>Distance*mass/energy = 2.705 kg * 31.67 m/kJ</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p>= .086 kg⋅m/J</p>
 +</HTML>
 +
 +
 +<HTML>
 +<p><br/>
 +<br/>
 +<em>Primary author: Ronny Fernandez</em></p>
 +</HTML>
 +
 +
 +===== Notes =====
 +
 +
 +<HTML>
 +<p><a href="https://commons.wikimedia.org/wiki/File:Tam5.jpg">Photo</a> by Ronan Coyne, licensed under the <a href="https://en.wikipedia.org/wiki/en:Creative_Commons">Creative Commons</a> <a href="https://creativecommons.org/licenses/by-sa/3.0/deed.en">Attribution-Share Alike 3.0 Unported</a> license, unaltered.</p>
 +</HTML>
 +
 +
 +<HTML>
 +<ol class="easy-footnotes-wrapper">
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-1-2759"></span>“<em><strong>The Spirit of Butts’ Farm</strong></em> (also known as <strong>TAM 5</strong>) was the first <a href="https://en.wikipedia.org/wiki/Model_aircraft">model aircraft</a> to cross the <a href="https://en.wikipedia.org/wiki/Atlantic_Ocean">Atlantic Ocean</a> on August 11, 2003…Fuel tank: Approx. 118 US fluid ounces (3.5 l)” [118 US fluid ounces = 0.92 US liquid gallons according to Google]
 +                  <p>“<em>The Spirit of Butts’ Farm</em>.” In <em>Wikipedia</em>, September 29, 2019. <a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855">https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855</a>.<a class="easy-footnote-to-top" href="#easy-footnote-1-2759"></a></p>
 +</div></li>
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-2-2759"></span>From Wikipedia:
 +                  <figure class="wp-block-table is-style-regular">
 +<table>
 +<tbody>
 +<tr>
 +<td>Weight:</td>
 +<td>Dry: 5.96 lb (2.705 kg); Fully fueled: 10.99 lb (4.987 kg)<sup><a href="https://en.wikipedia.org/wiki/The_Spirit_of_Butts%27_Farm#cite_note-FAIappl-11">[11]</a></sup></td>
 +</tr>
 +</tbody>
 +</table>
 +</figure>
 +<p>“<em>The Spirit of Butts’ Farm</em>.” In <em>Wikipedia</em>, September 29, 2019. <a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855">https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855</a>.<a class="easy-footnote-to-top" href="#easy-footnote-2-2759"></a></p>
 +</div></li>
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-3-2759"></span>“The flight used 99.2% of its fuel…Fuel tank: Approx. 118 US fluid ounces (3.5 l)”<br/>
 +<br/>
 +                  “<em>The Spirit of Butts’ Farm</em>.” In <em>Wikipedia</em>, September 29, 2019. <a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855">https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855</a>.<br/>
 +<br/>
 +                  Multiplying these values we find that the vehicle crossed the Atlantic using 99.2%*118 = 117.1 fluid ounces<a class="easy-footnote-to-top" href="#easy-footnote-3-2759"></a>
 +</div></li>
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-4-2759"></span>“It was recognized by the FAI as a double world record[2] flight for its duration of 38h 52 min 19 sec[3] and straight-line distance of 1,881.6 mi (3,028.1 km) using an autopilot,[4]…”
 +                  <p>“<em>The Spirit of Butts’ Farm</em>.” In <em>Wikipedia</em>, September 29, 2019. <a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855">https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855</a>.<a class="easy-footnote-to-top" href="#easy-footnote-4-2759"></a></p>
 +</div></li>
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-5-2759"></span>From Wikipedia:
 +                  <figure class="wp-block-table is-style-regular">
 +<table>
 +<tbody>
 +<tr>
 +<td>Fuel:</td>
 +<td>
 +<a href="https://en.wikipedia.org/wiki/Coleman_fuel">Coleman lantern fuel</a> with 16 US fl oz (470 ml) of Indopol L-50 lubricant additive per 1 US gal (3,785 ml). Single fuel tank in the fuselage at the CG point <sup><a href="https://en.wikipedia.org/wiki/The_Spirit_of_Butts%27_Farm#cite_note-barnardmicro-12">[12]</a></sup> (normal: <a href="https://en.wikipedia.org/wiki/Alcohol">alcohol</a>)
 +                          </td>
 +</tr>
 +</tbody>
 +</table>
 +</figure>
 +<p>“<em>The Spirit of Butts’ Farm</em>.” In <em>Wikipedia</em>, September 29, 2019. <a href="https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855">https://en.wikipedia.org/w/index.php?title=The_Spirit_of_Butts%27_Farm&amp;oldid=918639855</a>.<a class="easy-footnote-to-top" href="#easy-footnote-5-2759"></a></p>
 +</div></li>
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-6-2759"></span>“…Coleman Camp Fuel, which is a common naphtha-based fuel used in many lanterns and stoves”
 +                  <p>“Coleman Fuel.” In <em>Wikipedia</em>, August 22, 2019. <a href="https://en.wikipedia.org/w/index.php?title=Coleman_fuel&amp;oldid=911926038">https://en.wikipedia.org/w/index.php?title=Coleman_fuel&amp;oldid=911926038</a>.<a class="easy-footnote-to-top" href="#easy-footnote-6-2759"></a></p>
 +</div></li>
 +<li><div class="li">
 +<span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-7-2759"></span>“
 +                  <figure class="wp-block-table is-style-regular">
 +<table>
 +<tbody>
 +<tr>
 +<td><strong>Liquid Fuel</strong></td>
 +<td></td>
 +<td></td>
 +<td><strong>MJ / liter</strong></td>
 +</tr>
 +</tbody>
 +</table>
 +</figure>
 +<p>…</p>
 +<figure class="wp-block-table is-style-regular">
 +<table>
 +<tbody>
 +<tr>
 +<td>Naphtha</td>
 +<td></td>
 +<td>31.4</td>
 +</tr>
 +</tbody>
 +</table>
 +</figure>
 +<p>“List of Common Conversion Factors (Engineering Conversion Factors) – IOR Energy Pty Ltd.” Accessed November 17, 2020. <a href="http://w.astro.berkeley.edu/~wright/fuel_energy.html">http://w.astro.berkeley.edu/~wright/fuel_energy.html</a>.<a class="easy-footnote-to-top" href="#easy-footnote-7-2759"></a></p>
 +</div></li>
 +</ol>
 +</HTML>
 +
 +
  
power_of_evolution/evolution_engineering_comparison/energy_efficiency_of_the_spirit_of_butts_farm.txt · Last modified: 2022/09/21 07:37 (external edit)

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