{"id":11491203,"date":"2026-08-12T10:52:32","date_gmt":"2026-08-12T08:52:32","guid":{"rendered":"https:\/\/migflug.com\/jetflights\/northrop-xp-56-black-bullet\/"},"modified":"2026-08-12T11:12:26","modified_gmt":"2026-08-12T09:12:26","slug":"northrop-xp-56-black-bullet","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/it\/northrop-xp-56-black-bullet\/","title":{"rendered":"L&#039;ala volante in magnesio della Northrop che non ha mai combattuto"},"content":{"rendered":"<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style><p>Sfilato sulla distesa arida e sbiancata dal sole di Muroc nel 1943, il Northrop XP-56 sembrava pi\u00f9 un proiettile scuro e senza testa che un caccia. Non aveva quasi coda, n\u00e9 elica anteriore, e una grossa pinna ventrale fendeva l&#039;aria del deserto. Jack Northrop lo soprannomin\u00f2 &quot;Black Bullet&quot; (Proiettile Nero), ed era una delle macchine pi\u00f9 radicali costruite dagli Stati Uniti durante la guerra.<\/p><p>L&#039;idea nacque nel 1939, quando la Northrop cerc\u00f2 di realizzare un caccia ad ala volante con la minima resistenza aerodinamica possibile. Niente coda orizzontale, solo un moncone di deriva verticale e un motore a spinta posizionato dietro il pilota che faceva girare una coppia di eliche controrotanti. Per dimostrare che la configurazione senza coda potesse effettivamente volare, la Northrop test\u00f2 dapprima il piccolo modello N-1M, che conferm\u00f2 la validit\u00e0 del concetto a sufficienza da indurre l&#039;esercito a ordinare i prototipi.<\/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\">Prototipo di intercettore monoposto<\/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\">30 settembre 1943<\/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 x Elica radiale, spingente e controrotante Pratt &amp; Whitney R-2800<\/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\">Velocit\u00e0 stimata di progetto di 465 mph (mai raggiunta)<\/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\">2<\/td><\/tr><tr><td style=\"padding:6px 14px 6px 0;font-weight:600;color:#333;vertical-align:top;white-space:nowrap\">Costruzione<\/td><td style=\"padding:6px 0;color:#444\">Struttura in magnesio, saldatura TIG (Heliar Arc).<\/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\">Uno \u00e8 precipitato; l&#039;altro \u00e8 sopravvissuto ed \u00e8 conservato allo Smithsonian.<\/td><\/tr><\/table><\/div>\r\n<h2 style=\"padding-top:22px\">Costruito con magnesio e disperazione<\/h2><p>Ci\u00f2 che distingueva davvero l&#039;XP-56 era il suo rivestimento. Poich\u00e9 si prevedeva una carenza di alluminio a causa della domanda bellica, Northrop costru\u00ec la cellula in magnesio, un metallo circa un terzo pi\u00f9 leggero ma notoriamente difficile da saldare. Il suo team svilupp\u00f2 il processo di saldatura Heliarc per unire i materiali, una tecnica che sopravvisse all&#039;aereo e divenne uno standard del settore.<\/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\/Hz0aFmCFURE\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p>Il propulsore fu un compromesso fin dall&#039;inizio. L&#039;esotico motore Pratt &amp; Whitney X-1800 venne scartato, costringendo la Northrop a installare un radiale R-2800 pi\u00f9 grande e pesante. La sostituzione aggiunse peso, allarg\u00f2 la fusoliera e richiese mesi di lavoro. Il Black Bullet era gi\u00e0 in lotta con se stesso prima ancora di volare.<\/p>\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=182815635  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\/northrop-xp-56-black-bullet-1.jpg\" alt=\"Un esemplare sopravvissuto del Northrop XP-56 Black Bullet \u00e8 attualmente in deposito.\" 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\">Il secondo esemplare sopravvissuto della Black Bullet, ora conservato nella collezione dello Smithsonian. Foto: Wikimedia Commons<\/figcaption><\/figure>\r\n<h2 style=\"padding-top:22px\">Una breve e infelice carriera da pilota<\/h2><p>Il 30 settembre 1943 il primo prototipo finalmente decoll\u00f2, afflitto da un grave problema di imbardata dovuto alla scarsa stabilit\u00e0 aerodinamica. Poco pi\u00f9 di una settimana dopo, uno pneumatico scoppi\u00f2 durante un rullaggio ad alta velocit\u00e0 e l&#039;aereo si capovolse sul lago prosciugato. Il pilota collaudatore John Myers ne usc\u00ec illeso, attribuendo il merito dell&#039;accaduto al casco da polo che aveva improvvisato.<\/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;Il Black Bullet di Jack Northrop rappresentava un tentativo di migliorare radicalmente le prestazioni degli aerei da combattimento utilizzando una struttura non convenzionale, quasi interamente alare.&quot;\u201d<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Museo Nazionale dell&#039;Aeronautica e dello Spazio<\/strong> \u2014 Descrizione curatoriale dello Smithsonian<\/div><\/div><\/div>\r\n<p>Il secondo prototipo vol\u00f2 nel marzo del 1944 con una deriva molto pi\u00f9 grande, ma non si avvicin\u00f2 mai alla velocit\u00e0 promessa di 465 miglia orarie. Era sbilanciato in avanti, consumava troppo carburante ed era instabile, e dopo soli dieci voli l&#039;esercito lo mise a terra perch\u00e9 troppo pericoloso.<\/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\/Y70Dh7Be__4\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p>Nel 1946 i jet erano gi\u00e0 in fase di progettazione e nessuno voleva un caccia a elica problematico. Il Black Bullet sopravvissuto fu imballato e alla fine entr\u00f2 a far parte dello Smithsonian. Oggi si trova in un deposito: un vicolo cieco minaccioso e affascinante che ha spinto in avanti la metallurgia pur essendosi rivelato un fallimento come caccia.<\/p>\r\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img data-opt-id=1012962037  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\/northrop-xp-56-black-bullet-2.jpg\" alt=\"Foto di guerra del Northrop XP-56\" 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\">Immagine in tempo di guerra dell&#039;XP-56, un aereo senza coda con motore spingente. Foto: Ray Wagner Collection \/ 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>\u201c&quot;Sebbene alla fine si sia rivelato un fallimento, l&#039;XP-56 fu costruito utilizzando un nuovo materiale, il magnesio, e un nuovo processo costruttivo, la saldatura TIG.&quot;\u201d<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Museo Nazionale dell&#039;Aeronautica e dello Spazio<\/strong> \u2014 Descrizione dell&#039;oggetto secondo lo Smithsonian<\/div><\/div><\/div>\r\n<p>La storia completa e bizzarra del Proiettile Nero e delle idee che ha lasciato in eredit\u00e0:<\/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\/lnVj90Ldr5E\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;border-radius:8px\" allowfullscreen><\/iframe><\/div>\r\n<p><em>Fonti: National Air and Space Museum; Wikipedia; Collezione Ray Wagner.<\/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\/vought-xf5u-flying-pancake-navy-fighter\/\">Flying Pancake: il caccia della Marina che non ha mai volato<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/it\/northrop-yb-49-flying-wing-b2-spirit\/\">Il Northrop YB-49: l&#039;ala volante che mor\u00ec affinch\u00e9 il B-2 potesse vivere.<\/a><\/p><\/div>","protected":false},"excerpt":{"rendered":"<p>Roll it out onto the sun-bleached hardpan at Muroc in 1943 and the Northrop XP-56 looked less like a fighter than a dark, headless projectile. There was almost no tail, no nose propeller, and a fat belly fin slicing the desert air. Jack Northrop called it the Black Bullet, and it was one of the [&hellip;]<\/p>\n","protected":false},"author":23,"featured_media":11491218,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[664],"tags":[],"class_list":["post-11491203","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-military-aviation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Northrop XP-56 Black Bullet: Tailless WWII Gamble<\/title>\n<meta name=\"description\" content=\"The Northrop XP-56 Black Bullet was a tailless, magnesium pusher fighter that promised 465 mph but barely left the ground. 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