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power_of_evolution:evolution_engineering_comparison:energy_efficiency_of_boeing_747-400 [2022/09/21 07:37] (current)
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| | ====== Energy efficiency of Boeing 747-400 ====== |
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| | // Published 05 November, 2020; last updated 10 December, 2020 // |
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| | <p>The Boeing 747-400:</p> |
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| | <li><div class="li">covers around 0.0021m/kJ.</div></li> |
| | <li><div class="li">and moves mass at around 0.39 – 0.83 kg.m/J</div></li> |
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| | ===== Details ===== |
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| | <p>The <em>Boeing 747-400</em> is a 1987 passenger plane.<span class="easy-footnote-margin-adjust" id="easy-footnote-1-2745"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-1-2745" title='&#8220;The&nbsp;<strong>Boeing 747-400</strong>&nbsp;is a&nbsp;<a href="https://en.wikipedia.org/wiki/Wide-body_aircraft">wide-body airliner</a>&nbsp;produced by&nbsp;<a href="https://en.wikipedia.org/wiki/Boeing_Commercial_Airplanes">Boeing Commercial Airplanes</a>, an advanced variant of the initial&nbsp;<a href="https://en.wikipedia.org/wiki/Boeing_747">Boeing 747</a>. The &#8220;Advanced Series 300&#8221; was announced at the September 1984&nbsp;<a href="https://en.wikipedia.org/wiki/Farnborough_Airshow">Farnborough Airshow</a>, targeting a 10% cost reduction with more efficient engines and 1,000&nbsp;nmi (1,850&nbsp;km) more range.&nbsp;”</p> <p>“Boeing 747-400.” In <em>Wikipedia</em>, November 2, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Boeing_747-400&amp;oldid=986725646">https://en.wikipedia.org/w/index.php?title=Boeing_747-400&amp;oldid=986725646</a>.'><sup>1</sup></a></span></p> |
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| | ==== Distance per Joule ==== |
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| | <p>The plane uses 10.77 kg/km of fuel on a medium haul flight.<span class="easy-footnote-margin-adjust" id="easy-footnote-2-2745"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-2-2745" title='“Fuel Economy in Aircraft.” In <em>Wikipedia</em>, October 22, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Fuel_economy_in_aircraft&amp;oldid=984919809">https://en.wikipedia.org/w/index.php?title=Fuel_economy_in_aircraft&amp;oldid=984919809</a>.'><sup>2</sup></a></span> We do not know what type of fuel it uses, but typical values for aviation fuel are around 44MJ/kg.<span class="easy-footnote-margin-adjust" id="easy-footnote-3-2745"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-3-2745" title='&#8220;The&nbsp;<a href="https://en.wikipedia.org/wiki/Net_energy_content">net energy content</a>&nbsp;for aviation fuels depends on their composition. Some typical values are:<sup><a href="https://en.wikipedia.org/wiki/Aviation_fuel#cite_note-15">[15]</a></sup></p> <ul><li>BP Avgas 80,&nbsp;<a href="https://en.wikipedia.org/wiki/Orders_of_magnitude_(energy)#1E6">44.65</a>&nbsp;<a href="https://en.wikipedia.org/wiki/Joule">MJ</a>/kg, density at 15&nbsp;°C is 690&nbsp;kg/<a href="https://en.wikipedia.org/wiki/Cubic_metre">m<sup>3</sup></a>&nbsp;(30.81&nbsp;MJ/litre).</li><li>Kerosene type BP Jet A-1, 43.15&nbsp;MJ/kg, density at 15&nbsp;°C is 804&nbsp;kg/m<sup>3</sup>&nbsp;(34.69&nbsp;MJ/litre).</li><li>Kerosene type BP Jet TS-1 (for lower temperatures), 43.2&nbsp;MJ/kg, density at 15&nbsp;°C is 787&nbsp;kg/m<sup>3</sup>&nbsp;(34.00&nbsp;MJ/litre).&#8221;</li></ul> & |
