美國第六代戰機進入採購計劃 變循環發動機初步測試達標 B-21明年試飛 | 第六代戰機 | 六代戰機 | XA100 | 變循環發動機 | 通用電氣 | F35 | B21 | 馬克時空 第42期
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美國通用電氣公司(General Electric Company,簡稱GE,又稱奇異公司)近日宣布,完成首台XA100變循環發動機的測試。通用電氣表示,這種發動機主要是爲美國第六代戰機設計的,而且也可以給F-35戰鬥機換發升級。這一款全新發動機的誕生,領先俄羅斯和中國整整2代! 美國空軍今年4月公布《2019-2020年度採購報告》,提及美國下一代空中優勢項目(NGAD)第六代戰鬥機,包括這款全新戰機的概念圖和設計理念。此外,一直很神祕的B-21隱身戰略轟炸機,據說將在明年開始試飛,2025年開始服役。 00:00 XA100變循環發動機完成測試 01:33 變循環發動機是六代機的關鍵 08:31 第六代飛機進入採購計劃 10:45 B-21明年首飛 ✈️ 變循環發動機是六代機的關鍵 通用電氣的XA100發動機,是目前唯一的變循環發動機,採用三涵道設計,而且涵道比可以調節,這種發動機設計,可以完美兼容飛機的不同飛行狀態:作戰時能夠提供大推力,和巡航時的低油耗,是一種革命性的發動機。 美國空軍對新一代發動機的要求非常高,希望F-35戰鬥機更換新一代發動機後,各方面性能有很大提升。 通用電氣表示,採用XA100引擎的六代戰機,遊蕩時間縮短50%,飛機系統的散熱量會增加60%。 XA100變循環發動機經過40多年的技術儲備,才研製成功的。美國兩家飛機引擎巨頭通用電氣和普惠公司,都曾經花很大力氣研發變循環發動機,並提出花樣百出的變循環模式。 爲什麼說XA100的誕生,領先俄羅斯和中國整整2代呢?因爲中國目前正在攻關的渦扇15和渦扇20,推力小於18噸,核心機都參考CFM56引擎,這是美法合資公司CFM在1970年代研發出來的,與F-35的F135發動機的差距已經很大,和未來的變循環發動機相比,更是隔代之差。 ✈️ 第六代飛機進入採購計劃 美國五代機F-22、F-35、B-2,經過近20年的實際操作和實戰經驗,美軍對第六代戰機提出深度隱身和超機動性的要求,其中深度隱身將是首要條件。 從美國空軍《2019-2020年度採購報告》中,可以看到六代戰機的概念圖。整體是接近三角形的飛翼的構型,垂直尾翼小而分離,發動機放在機身上部,尾噴管被機身遮擋,減少紅外線輻射。估計彈艙容量會更大,載彈量也會比五代機有所增加。 ✈️ B-21明年首飛 美國下一代戰略轟炸機B-21,前兩架原型機已經完工,基本可以確定2022年將首飛,2025年將服役。 B-21的細節還處於保密中,從美軍公布的B-21概念圖可以看出來,B-21採用與B-2類似的飛翼布局,但B-21在機身前緣有更陡的脊線,提供額外的隱身優勢。 此外,B-21採用幾乎齊平的進氣口,還有一體成型的發動機短艙,這些設計在隱形能力方面都頗具創新性。 B-21的主起落架是兩輪設計,而不是B-2的四輪設計。這說明B-21戰略轟炸機的總重量較輕,整體尺寸應該比B-2轟炸機小。 #第六代戰機 #變循環發動機 #F35 #B21 #六代戰機 #XA100 #戰略轟炸機 #隱形戰略轟炸機 #隱形轟炸機 #轟炸機 #隱身戰略轟炸機 #隱身轟炸機 #隱形戰鬥機 #隱身戰鬥機 #通用電氣 #奇異公司 #馬克時空 - 🤝 合作邀約、意見反饋 👉🏻 [email protected] - 💎 【馬克時空】其他平台,歡迎大家關注✨✨✨ 🚀 Facebook ➡️ https://www.facebook.com/馬克時空-Mark-Space-104329048322968 🛩 Instagram ➡️ https://www.instagram.com/markspace5/ 🛰 Telegram ➡️ https://t.me/markspacechannel
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