{"id":11493534,"date":"2026-08-12T11:04:56","date_gmt":"2026-08-12T09:04:56","guid":{"rendered":"https:\/\/migflug.com\/jetflights\/handley-page-hp-115-slender-delta-concorde\/"},"modified":"2026-08-12T11:20:44","modified_gmt":"2026-08-12T09:20:44","slug":"handley-page-hp-115-slimer-delta-concorde","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/it\/handley-page-hp-115-slender-delta-concorde\/","title":{"rendered":"HP.115, la sottile ala delta che dimostr\u00f2 la validit\u00e0 dell&#039;ala del Concorde"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style><p>Sembra una freccetta di carta disegnata da un bambino e presa sul serio da un ingegnere. Un lungo muso aghiforme, un&#039;enorme ala triangolare, un carrello d&#039;atterraggio esile a forma di stelo e un singolo piccolo motore a reazione posizionato alla base della deriva. L&#039;Handley Page HP.115 \u00e8 stato uno degli aerei pi\u00f9 strani e importanti mai costruiti in Gran Bretagna.<\/p><p>Negli anni &#039;50, i progettisti che inseguivano la costruzione di un aereo di linea supersonico si scontrarono con un ostacolo insormontabile. L&#039;ala a delta, estremamente sottile e dalle prestazioni impeccabili a velocit\u00e0 supersonica, rischiava di trasformarsi in una trappola mortale alla velocit\u00e0 di atterraggio. Le gallerie del vento non potevano far altro che discuterne. Qualcuno doveva pur provarlo in volo.<\/p>\r\n<div style=\"background:#f5f5f5;padding:20px 24px;margin:24px 0;border-radius:8px\"><p style=\"margin:0 0 10px;font-weight:700;font-size:15px;letter-spacing:.04em;color:#5C91FF\">INFORMAZIONI RAPIDE<\/p><table style=\"width:100%;border-collapse:collapse;font-size:15px\"><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Tipo<\/td><td style=\"padding:6px 0;color:#444\">Aereo da ricerca a bassa velocit\u00e0 con configurazione a delta snello<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Primo volo<\/td><td style=\"padding:6px 0;color:#444\">17 agosto 1961<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Ruolo<\/td><td style=\"padding:6px 0;color:#444\">Ricerca sulle delta a bassa velocit\u00e0 per il trasporto supersonico<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">centrale elettrica<\/td><td style=\"padding:6px 0;color:#444\">1 turbogetto Bristol Siddeley Viper<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Velocit\u00e0 massima<\/td><td style=\"padding:6px 0;color:#444\">248 mph (399 km\/h)<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Numero costruito<\/td><td style=\"padding:6px 0;color:#444\">1 (seriale XP841)<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Destino<\/td><td style=\"padding:6px 0;color:#444\">Ritirato dal servizio nel 1974; conservato presso il Fleet Air Arm Museum.<\/td><\/tr><\/table><\/div>\r\n<h2 style=\"padding-top:22px\">Inseguendo un vortice<\/h2><p>I ricercatori del Royal Aircraft Establishment, basandosi sul lavoro di Dietrich K\u00fcchemann e Johanna Weber, si resero conto che un&#039;ala a delta con una forte freccia genera potenti vortici a bassa velocit\u00e0 che attraggono ulteriore portanza dall&#039;aria sopra l&#039;ala. L&#039;HP.115 fu costruito per testare concretamente questa idea, con un&#039;ala inclinata all&#039;indietro di ben 75 gradi.<\/p>\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/E_1C4Ct2MaE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p>Il 17 agosto 1961, il pilota collaudatore Jack Henderson fece decollare l&#039;XP841 dalla base RAE di Bedford e torn\u00f2 con un sorriso stampato in faccia. Lungi dall&#039;essere pericolosamente instabile, il piccolo jet era docile. I piloti potevano effettuare virate strette da un&#039;inclinazione all&#039;altra mentre solcava l&#039;aria a soli 69 miglia orarie, una frazione della velocit\u00e0 di atterraggio di un jet veloce.<\/p>\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=1604393119  fetchpriority=\"high\" decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:0e0_.b970\/w:auto\/h:auto\/q:mauto\/ig:avif\/https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/08\/handley-page-hp-115-slender-delta-concorde-1.jpg\" alt=\"Aereo da ricerca Handley Page HP.115 a delta snello\" style=\"width:100%;height:auto;max-width:100%;display:block;border-radius:6px\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">L&#039;HP.115: un muso ad ago, un&#039;ala a delta di 75 gradi e un piccolo motore a reazione. Foto: Wikimedia Commons<\/figcaption><\/figure>\r\n<h2 style=\"padding-top:22px\">L&#039;ago che puntava al Concorde<\/h2><p>Per tredici anni l&#039;HP.115 raccolse silenziosamente i dati a bassa velocit\u00e0 necessari a un aereo da trasporto supersonico per le fasi di decollo e atterraggio. I suoi risultati, uniti a quelli ottenuti ad alta velocit\u00e0 dal BAC 221, contribuirono a convincere gli ingegneri che una sottile ala a delta fosse affidabile. Questa fiducia si rivers\u00f2 direttamente nel Concorde.<\/p>\r\n<div style=\"background:#f8f9fa;border-left:4px solid #5C91FF;padding:20px 22px;margin:18px 0 24px;border-radius:0 8px 8px 0;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>\u201c&quot;L&#039;HP.115 ha dimostrato di saper effettuare voli controllati e virate rapide a velocit\u00e0 anche di soli 69 miglia orarie circa.&quot;\u201d<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Notizie sull&#039;aviazione d&#039;epoca<\/strong> \u2014 pubblicazione sulla storia dell&#039;aviazione<\/div><\/div><\/div>\r\n<p>Nel 1974, l&#039;XP841 aveva raggiunto la sua vita operativa prevista, pari a circa 500 ore di volo, e fu ritirato dalle attivit\u00e0 di ricerca.<\/p>\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/HANKpeHBC3U\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p>Un aereo. Un motore. Un&#039;idea, dimostrata. L&#039;XP841 ora si trova accanto al muso di un Concorde al Fleet Air Arm Museum, un umile ago accanto all&#039;aereo di linea che ha contribuito a rendere possibile.<\/p>\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=1740672049  fetchpriority=\"high\" decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:0e0_.b970\/w:auto\/h:auto\/q:mauto\/ig:avif\/https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/08\/handley-page-hp-115-slender-delta-concorde-2.jpg\" alt=\"Pagina conservata di Handley HP.115\" style=\"width:100%;height:auto;max-width:100%;display:block;border-radius:6px\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">XP841 conservato. I suoi dati a bassa velocit\u00e0 hanno contribuito a rendere possibile il Concorde. Foto: Wikimedia Commons<\/figcaption><\/figure>\r\n\r\n<div style=\"background:#f8f9fa;border-left:4px solid #1565c0;padding:20px 22px;margin:18px 0 24px;border-radius:0 8px 8px 0;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>\u201cIl pilota JM Henderson espresse il suo entusiasmo dopo il volo inaugurale dell&#039;HP.115 nell&#039;agosto del 1961.'<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Museo dell&#039;Aeronautica Militare<\/strong> \u2014registro della raccolta<\/div><\/div><\/div>\r\n<p>Breve storia del piccolo e fragile delta che ridusse i rischi del Concorde:<\/p>\r\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/YAI0vzwCLg0\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p><em>Fonti: Fleet Air Arm Museum; Vintage Aviation News; Wikipedia.<\/em><\/p>\r\n<div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px;border-radius:0 8px 8px 0\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Post correlati<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/it\/douglas-x-3-stiletto-mach-2-research-jet-too-slow\/\">Progettato per Mach 2, troppo lento per arrivarci.<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/it\/il-tsr-2-il-miglior-aereo-britannico-che-non-ha-mai-prestato-servizio\/\">Il TSR-2: il miglior aereo britannico che non ha mai prestato servizio<\/a><\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>It looks like a paper dart that a child drew and an engineer took seriously. A long needle nose, a huge triangular wing, spindly stalk-like landing gear, and a single small jet perched at the base of the fin. The Handley Page HP.115 was one of the strangest and most important aircraft Britain ever built. [&hellip;]<\/p>\n","protected":false},"author":27,"featured_media":11493549,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[665],"tags":[],"class_list":["post-11493534","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation-world"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Handley Page HP.115: Slender Delta Testbed<\/title>\n<meta name=\"description\" content=\"The Handley Page HP.115 was a slender delta research jet that proved the low-speed wing later trusted on Concorde. 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