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power_of_evolution:evolution_engineering_comparison:energy_efficiency_of_vickers_vimy_plane [2022/09/21 07:37] (current)
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| | ====== Energy efficiency of Vickers Vimy plane ====== |
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| | // Published 05 November, 2020; last updated 10 December, 2020 // |
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| | <HTML> |
| | <p>The Vickers Vimy:</p> |
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| | <ul> |
| | <li><div class="li">flew around 0.025—0.050 m/kJ</div></li> |
| | <li><div class="li">and moved mass at around 0.081 – 0.25 kg.m/J</div></li> |
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| | ===== Details ===== |
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| | <p>The <em>Vickers Vimy</em> was a 1917 British WWI bomber.<span class="easy-footnote-margin-adjust" id="easy-footnote-1-2734"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-1-2734" title='&#8220;The&nbsp;<strong>Vickers Vimy</strong>&nbsp;was a British&nbsp;<a href="https://en.wikipedia.org/wiki/Heavy_bomber">heavy bomber</a>&nbsp;aircraft developed and manufactured by&nbsp;<a href="https://en.wikipedia.org/wiki/Vickers_Limited">Vickers Limited</a>. Developed during the latter stages of the&nbsp;<a href="https://en.wikipedia.org/wiki/World_War_I">First World War</a>&nbsp;to equip the&nbsp;<a href="https://en.wikipedia.org/wiki/Royal_Flying_Corps">Royal Flying Corps</a>&nbsp;(RFC), the Vimy was designed by&nbsp;<a href="https://en.wikipedia.org/wiki/Rex_Pierson">Reginald Kirshaw &#8220;Rex&#8221; Pierson</a>, Vickers&#8217; chief designer&#8230;On 16 August 1917 Vickers was issued with a contract for three prototype aircraft…&nbsp; the manufacture of the three prototypes was completed within four months.”</p> <p>“Vickers Vimy.” In <em>Wikipedia</em>, October 27, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&amp;oldid=985669067">https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&amp;oldid=985669067</a>.'><sup>1</sup></a></span> It was used in the <a href="/doku.php?id=takeoff_speed:continuity_of_progress:historic_trends_in_transatlantic_passenger_travel">first non-stop transatlantic flight</a>.</p> |
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| | ==== Mass ==== |
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| | <p>According to Wikipedia<span class="easy-footnote-margin-adjust" id="easy-footnote-2-2734"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-2-2734" title='“Vickers Vimy.” In <em>Wikipedia</em>, October 27, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&amp;oldid=985669067">https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&amp;oldid=985669067</a>.'><sup>2</sup></a></span>:</p> |
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| | <ul> |
| | <li><div class="li"><strong>Empty weight:</strong> 7,104 lb (3,222 kg)</div></li> |
| | <li><div class="li"><strong>Max takeoff weight:</strong> 10,884 lb (4,937 kg)</div></li> |
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| | <p>We use the range 3,222—4,937 kg, since we do not know at what weight in that range the relevant speeds were measured.</p> |
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| | ==== Energy use per second ==== |
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| | <p>We also have:</p> |
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| | <li><div class="li"><strong>Power:</strong> 360 horsepower = 270 kW<span class="easy-footnote-margin-adjust" id="easy-footnote-3-2734"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-3-2734" title='&#8220;<strong>Powerplant:</strong>&nbsp;2 ×&nbsp;<a href="https://en.wikipedia.org/wiki/Rolls-Royce_Eagle">Rolls-Royce Eagle VIII</a>&nbsp;water-cooled&nbsp;<a href="https://en.wikipedia.org/wiki/V12_engine">V12 engines</a>, 360&nbsp;hp (270&nbsp;kW) each&#8221;<br><br>“Vickers Vimy.” In <em>Wikipedia</em>, October 27, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&amp;oldid=985669067">https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&amp;oldid=985669067</a>.'><sup>3</sup></a></span></div></li> |
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| | <strong>Efficiency of use of energy from fuel:</strong> we did not find data on this, so use an estimate of 15%-30%, based on what we know about the <a href="/doku.php?id=power_of_evolution:evolution_engineering_comparison:energy_efficiency_of_wright_flyer#Efficiency_of_energy_conversion_from_fuel_to_motor_power">energy efficiency of the Wright Flyer</a>. |
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| | <p>From these we can calculate:</p> |
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| | <p>Energy use per second<br/> |
| | = power of engine x 1/efficiency in converting energy to engine power<br/> |
| | = 270kJ/s / .15—270kJ/s / .30<br/> |
| | = 900—1800 kJ/s</p> |
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| | ==== Distance per second ==== |
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| | <p>Wikipedia gives us:</p> |
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| | <li><div class="li"><strong><strong>Maximum speed:</strong> </strong>100 mph (160 km/h, 87 kn)<span class="easy-footnote-margin-adjust" id="easy-footnote-4-2734"></span><span class="easy-footnote"><a href="#easy-footnote-bottom-4-2734" title='“Wright Model B.” In <em>Wikipedia</em>, September 16, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Wright_Model_B&amp;oldid=978792334">https://en.wikipedia.org/w/index.php?title=Wright_Model_B&amp;oldid=978792334</a>.'><sup>4</sup></a></span></div></li> |
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| | <p>Note that the figures for power do not obviously correspond to the highest measured speed. This is a rough estimate.</p> |
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| | ==== Distance per Joule ==== |
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| | <p>We now have (from above):</p> |
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| | <ul> |
| | <li><div class="li">speed = 100 miles/h = 44.7m/s</div></li> |
| | <li><div class="li">energy use = 900—1800 kJ/s</div></li> |
| | </ul> |
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| | <p>Thus, on average each second the plane flies 44.7 m and uses 900—1800 kJ, for 0.025—0.050 m/kJ.</p> |
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| | ==== Mass.distance per Joule ==== |
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| | <p>We have:</p> |
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| | <ul> |
| | <li><div class="li">Distance per kilojoule: 0.025—0.050 m/kJ</div></li> |
| | <li><div class="li">Mass: 3,222—4,937 kg</div></li> |
| | </ul> |
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| | <HTML> |
| | <p>This gives us a range of 0.081 – 0.25 kg.m/J</p> |
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| | <p><br/> |
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| | <em>Primary author: Ronny Fernandez</em></p> |
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| | ===== Notes ===== |
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| | <ol class="easy-footnotes-wrapper"> |
| | <li><div class="li"> |
| | <span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-1-2734"></span>“The <strong>Vickers Vimy</strong> was a British <a href="https://en.wikipedia.org/wiki/Heavy_bomber">heavy bomber</a> aircraft developed and manufactured by <a href="https://en.wikipedia.org/wiki/Vickers_Limited">Vickers Limited</a>. Developed during the latter stages of the <a href="https://en.wikipedia.org/wiki/World_War_I">First World War</a> to equip the <a href="https://en.wikipedia.org/wiki/Royal_Flying_Corps">Royal Flying Corps</a> (RFC), the Vimy was designed by <a href="https://en.wikipedia.org/wiki/Rex_Pierson">Reginald Kirshaw “Rex” Pierson</a>, Vickers’ chief designer…On 16 August 1917 Vickers was issued with a contract for three prototype aircraft… the manufacture of the three prototypes was completed within four months.” |
| | <p>“Vickers Vimy.” In <em>Wikipedia</em>, October 27, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&oldid=985669067">https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&oldid=985669067</a>.<a class="easy-footnote-to-top" href="#easy-footnote-1-2734"></a></p> |
| | </div></li> |
| | <li><div class="li"> |
| | <span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-2-2734"></span>“Vickers Vimy.” In <em>Wikipedia</em>, October 27, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&oldid=985669067">https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&oldid=985669067</a>.<a class="easy-footnote-to-top" href="#easy-footnote-2-2734"></a> |
| | </div></li> |
| | <li><div class="li"> |
| | <span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-3-2734"></span>“<strong>Powerplant:</strong> 2 × <a href="https://en.wikipedia.org/wiki/Rolls-Royce_Eagle">Rolls-Royce Eagle VIII</a> water-cooled <a href="https://en.wikipedia.org/wiki/V12_engine">V12 engines</a>, 360 hp (270 kW) each”<br/> |
| | <br/> |
| | “Vickers Vimy.” In <em>Wikipedia</em>, October 27, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&oldid=985669067">https://en.wikipedia.org/w/index.php?title=Vickers_Vimy&oldid=985669067</a>.<a class="easy-footnote-to-top" href="#easy-footnote-3-2734"></a> |
| | </div></li> |
| | <li><div class="li"> |
| | <span class="easy-footnote-margin-adjust" id="easy-footnote-bottom-4-2734"></span>“Wright Model B.” In <em>Wikipedia</em>, September 16, 2020. <a href="https://en.wikipedia.org/w/index.php?title=Wright_Model_B&oldid=978792334">https://en.wikipedia.org/w/index.php?title=Wright_Model_B&oldid=978792334</a>.<a class="easy-footnote-to-top" href="#easy-footnote-4-2734"></a> |
| | </div></li> |
| | </ol> |
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