{"id":14132,"date":"2021-07-22T18:26:49","date_gmt":"2021-07-23T01:26:49","guid":{"rendered":"http:\/\/cafe.foundation\/blog\/?p=14132"},"modified":"2021-07-22T18:26:49","modified_gmt":"2021-07-23T01:26:49","slug":"voltaero-demonstrates-quiet-flight","status":"publish","type":"post","link":"http:\/\/cafe.foundation\/blog\/voltaero-demonstrates-quiet-flight\/","title":{"rendered":"VoltAero Demonstrates Quiet Flight"},"content":{"rendered":"<p>At least two Cessna 337s are flying on modified power systems \u2013 one with Ampaire in various locations around the world and one in France.\u00a0 VoltAero&#8217;s French Cessna push-pull twin has been turned into a tri-motor, with twin motors sprouting from the front of the craft\u2019s tail booms.\u00a0 Like its American counterpart, VoltAero\u2019s machine is a test bed for the planned power system that will mark its successor.<\/p>\n<p><iframe loading=\"lazy\" title=\"Cassio 330\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/i3-twxEZ2pg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><strong>\u00a0<\/strong>VoltAero reveals its coming aircraft will feature a \u201cbarrel\u201d-type arrangement of three 60 kilowatt electric motors ringing a central internal-combustion (thermal) engine.\u00a0 Jean Botti, CEO of VoltAero, explains the motor configuration is well-proven, having flown in the Cassio 1 demonstrator (the Cessna) since October last year.\u00a0 Since then, it\u2019s been flown around a series of airports in France, racking up over 3,000 kilometers (1,864 miles) in 10 hops visiting 11 cities.<\/p>\n<p><a href=\"http:\/\/sustainableskies.org\/wp-content\/uploads\/2021\/07\/voltaero-tour-de-france-interactive-map-NEW-Jul2.gif\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16811\" src=\"http:\/\/sustainableskies.org\/wp-content\/uploads\/2021\/07\/voltaero-tour-de-france-interactive-map-NEW-Jul2-528x493.gif\" alt=\"\" width=\"600\" height=\"561\" \/><\/a><\/p>\n<p>Later versions of the Cassio design will feature the 330 kW hybrid arrangement of Cassio 1, producing 442 horsepower.\u00a0 Later versions will produce 480 kW (644 hp.) and 600 kW (805 hp.) for the six and ten-seat modular expansions.\u00a0 The latter will cruise at 200 knots (360 kilometers per hour or 230 mph).\u00a0 Each of the craft will feature <a href=\"https:\/\/www.voltaero.aero\/en\/feature-stories\/cassio-ownership-costs-ehats\/\">significantly lower operating cost<\/a>s than fossil-fuel rivals.<\/p>\n<p>&nbsp;<\/p>\n<h4><strong>An Unveiling <\/strong><\/h4>\n<p><iframe loading=\"lazy\" title=\"Flight demonstration of VoltAero&#039;s Cassio\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/dmUbcscclmE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><strong>\u00a0<\/strong>At a small gathering on October 21, 2020, Jean Botti let his select audience hear just how quietly his Cassio 1 could traverse the skies over France.\u00a0 The video is a bit long and has lapses common to a live presentation, so follow the timing marks below:<\/p>\n<p>Between 16:50 and 40:30, Botti delivers a presentation on the salient points of his demonstration aircraft.<\/p>\n<p><strong>\u00a0<\/strong>From 1:15:20 to 1:23, attendees could compare takeoff noise levels between a \u201cstandard 337 and the hybrid version: 80 dB vs 72.\u00a0 To enable comparisons, <a href=\"https:\/\/www.quora.com\/At-every-10-decibels-does-the-sound-get-10%C3%97-or-2%C3%97-louder\">we\u2019ve attached this link<\/a>.<\/p>\n<p><strong>\u00a0<\/strong>In the short interval from 1:25 to 1:29:20, both craft fly overhead, again demonstrating a significant difference in sound level.<\/p>\n<p><strong>\u00a0<\/strong>From 1:32:15 to 1:43:15 the planes land, taxi to the hangar and Botti makes closing remarks.<\/p>\n<div id=\"attachment_16812\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sustainableskies.org\/wp-content\/uploads\/2021\/07\/voltaero-propulsion-module-fuelburn-img-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-16812\" class=\"wp-image-16812\" src=\"http:\/\/sustainableskies.org\/wp-content\/uploads\/2021\/07\/voltaero-propulsion-module-fuelburn-img-1-528x357.jpg\" alt=\"\" width=\"600\" height=\"406\" \/><\/a><p id=\"caption-attachment-16812\" class=\"wp-caption-text\">VoltAero&#8217;s comparison of fuel burn for turbine helicopter compared to fuel burn for hybrid system like that on Cassio 1<\/p><\/div>\n<p><strong>\u00a0<\/strong>VoltAero makes several claims for the power system, including:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.voltaero.aero\/en\/propulsion\/\">Unique patented series\/parallel hybrid design<\/a>: from full electric to full rechargeable hybrid, depending on the flight profile and mission requirement.<\/li>\n<li>The dual source of power provides unmatched safety.<\/li>\n<li>4 dBa lower noise than comparable aircraft during operations, and no noise during ground taxi (with an electrically-driven nose wheel). This is low compared to the sound levels demonstrated in the actual flight demonstration.<\/li>\n<li>20 percent lower emissions than comparable aircraft in the full hybrid mode and 100 percent in full electric.<\/li>\n<\/ul>\n<h4><strong>The Team<\/strong><\/h4>\n<div id=\"attachment_16813\" style=\"width: 610px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sustainableskies.org\/wp-content\/uploads\/2021\/07\/voltaero-5-4-2020-expertise-page-graphic3.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-16813\" class=\"wp-image-16813\" src=\"http:\/\/sustainableskies.org\/wp-content\/uploads\/2021\/07\/voltaero-5-4-2020-expertise-page-graphic3-528x143.jpg\" alt=\"\" width=\"600\" height=\"162\" \/><\/a><p id=\"caption-attachment-16813\" class=\"wp-caption-text\">The team has a history and a series of demonstrated accomplishments<\/p><\/div>\n<p>VoltAero CEO and Chief Technology Officer Jean Botti and Technical Director Didier Esteyne have a history with electric aircraft, ranging from making a four-motor Cri-Cri that flew at the Paris Air Show to developing Airbus&#8217; eFan range.\u00a0 Their latest effort shows they are willing to explore new ways of electrifying flight.<\/p>\n<div id=\"facebook_like\"><iframe src=\"http:\/\/www.facebook.com\/plugins\/like.php?href=http%3A%2F%2Fcafe.foundation%2Fblog%2Fvoltaero-demonstrates-quiet-flight%2F&amp;layout=standard&amp;show_faces=true&amp;width=500&amp;action=like&amp;font=segoe+ui&amp;colorscheme=light&amp;height=80\" scrolling=\"no\" frameborder=\"0\" style=\"border:none; overflow:hidden; width:500px; height:80px;\" allowTransparency=\"true\"><\/iframe><\/div>","protected":false},"excerpt":{"rendered":"<p>At least two Cessna 337s are flying on modified power systems \u2013 one with Ampaire in various locations around the world and one in France.\u00a0 VoltAero&#8217;s French Cessna push-pull twin has been turned into a tri-motor, with twin motors sprouting from the front of the craft\u2019s tail booms.\u00a0 Like its American counterpart, VoltAero\u2019s machine is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[6862,15,6894,14],"tags":[416,10887,9534,8274,10888,9536,733,736,10889,10018,10890],"class_list":["post-14132","post","type-post","status-publish","format-standard","category-batteries","category-electric_powerplants","category-hybrid-aircraft","category-sustainable_ga","tag-airbus","tag-airbus-cri-cri","tag-airbus-efan","tag-ampaire","tag-cassio-1","tag-cessna-337","tag-didier-esteyne","tag-jean-botti","tag-rochefort-charente-maritime-airport","tag-voltaero","tag-voltaero-tour-de-france"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - 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