{"id":4278,"date":"2022-07-04T23:00:00","date_gmt":"2022-07-04T23:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/burundi\/?p=4278"},"modified":"2022-07-04T16:04:10","modified_gmt":"2022-07-04T16:04:10","slug":"voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9","title":{"rendered":"Voici Stargazer, l&rsquo;avion hypersonique qui volera \u00e0 Mach 9"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Burundi. <\/strong><\/span>Une entreprise a\u00e9rospatiale texane vient de pr\u00e9senter son concept d&rsquo;avion hypersonique Stargazer, qui transporterait les passagers \u00e0 plus de 50 kilom\u00e8tres d&rsquo;altitude. Avec une vitesse de croisi\u00e8re de Mach 9, le constructeur affirme qu&rsquo;il pourrait atteindre n&rsquo;importe quel point du globe en une heure.<\/p>\n<p>L&rsquo;avenir de l&rsquo;aviation commerciale sera-t-elle hypersonique ? C&rsquo;est en tout cas ce qu&rsquo;esp\u00e8re Venus Aerospace, une entreprise texane qui vient de pr\u00e9senter pour la premi\u00e8re fois son avion spatial hypersonique Stargazer. Selon le constructeur, l&rsquo;appareil sera capable d&rsquo;atteindre la vitesse de Mach 9 et de transporter des passagers n&rsquo;importe o\u00f9 dans le monde en une heure.<\/p>\n<p>Pour atteindre une telle vitesse, l&rsquo;avion volera \u00e0 tr\u00e8s haute altitude, soit pr\u00e8s de 52 kilom\u00e8tres (170.000 pieds). Stargazer utilisera des a\u00e9roports conventionnels, et devra donc voler \u00e0 des vitesses subsoniques pour le d\u00e9collage et l&rsquo;atterrissage. Ce n&rsquo;est qu&rsquo;une fois arriv\u00e9 en altitude qu&rsquo;il acc\u00e9l\u00e9rera pour atteindre Mach 9. L&rsquo;avion mesurera 45 m\u00e8tres de long pour une envergure de 30 m\u00e8tres, et pourra transporter jusqu&rsquo;\u00e0 12 personnes.<\/p>\n<p><b>Une empreinte carbone nulle<\/b><\/p>\n<p>Mach 9 signifie neuf fois la vitesse du son, qui varie selon la temp\u00e9rature et donc de l&rsquo;altitude. \u00c0 plus de 50 kilom\u00e8tres, Mach 9 correspond \u00e0 environ 9.500 km\/h. L&rsquo;\u00e9quipe a travaill\u00e9 avec la Nasa pour s&rsquo;assurer que le bang supersonique cr\u00e9\u00e9 \u00e0 une telle altitude ne serait pas audible depuis le sol. Venus Aerospace n&rsquo;a pas indiqu\u00e9 ce que le Stargazer utilisera comme de carburant, mais affirme que l&#8217;empreinte carbone serait nulle.<\/p>\n<p>Toutefois, l&rsquo;annonce est \u00e0 prendre avec des pincettes. L&rsquo;appareil est encore au stade de concept, et la firme ne donne aucune d\u00e9lai pour un \u00e9ventuel prototype. De plus, la circonf\u00e9rence de la Terre \u00e9tant d&rsquo;environ 40.075 kilom\u00e8tres, il faudrait voyager \u00e0 au moins 20.000 km\/h pour atteindre n&rsquo;importe quel point du globe, une vitesse minimale qui augmente pour un avion qui voyage en altitude. Cette question ne semble toutefois pas inqui\u00e9ter les investisseurs, puisque Venus Aerospace a r\u00e9ussi \u00e0 obtenir un financement \u00e0 hauteur de plus de 33 millions de dollars.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/burundi\">Burundi<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Burundi. Une entreprise a\u00e9rospatiale texane vient de pr\u00e9senter son concept d&rsquo;avion hypersonique Stargazer, qui transporterait les passagers \u00e0 plus de 50 kilom\u00e8tres d&rsquo;altitude. Avec une vitesse de croisi\u00e8re de Mach 9, le constructeur affirme qu&rsquo;il pourrait atteindre n&rsquo;importe quel point du globe en une heure. L&rsquo;avenir de l&rsquo;aviation commerciale sera-t-elle hypersonique ? C&rsquo;est [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":4277,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[36,48,45],"class_list":["post-4278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-burundi","tag-burundi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Voici Stargazer, l&#039;avion hypersonique qui volera \u00e0 Mach 9 - Burundi<\/title>\n<meta name=\"description\" content=\"Une entreprise a\u00e9rospatiale texane vient de pr\u00e9senter son concept d&#039;avion hypersonique Stargazer, qui transporterait les ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Voici Stargazer, l&#039;avion hypersonique qui volera \u00e0 Mach 9\" \/>\n<meta property=\"og:description\" content=\"Une entreprise a\u00e9rospatiale texane vient de pr\u00e9senter son concept d&#039;avion hypersonique Stargazer, qui transporterait les ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9\" \/>\n<meta property=\"og:site_name\" content=\"Burundi\" \/>\n<meta property=\"article:published_time\" content=\"2022-07-04T23:00:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/burundi\/sites\/47\/2022\/07\/postQueueImg_3-62c30f647c6f7.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1556\" \/>\n\t<meta property=\"og:image:height\" content=\"972\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/burundi\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Voici Stargazer, l&rsquo;avion hypersonique qui volera \u00e0 Mach 9\",\"datePublished\":\"2022-07-04T23:00:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9\"},\"wordCount\":383,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/burundi\/sites\/47\/2022\/07\/postQueueImg_3-62c30f647c6f7.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Burundi\",\"Burundi\"],\"articleSection\":[\"Divers\",\"homepage-french\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9\",\"url\":\"https:\/\/www.africa-press.net\/burundi\/toutes-les-actualites\/voici-stargazer-lavion-hypersonique-qui-volera-a-mach-9\",\"name\":\"Voici Stargazer, l'avion hypersonique qui volera \u00e0 Mach 9 - 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