本帖最後由 black69 於 2011-3-2 17:44 編輯
回覆 tianmoxiangfu 的文章
大人您說什麽？？？J-20笨重？？真是神論呀
J-20高度4.5米左右，長度20以上，整個身形細長，氣動布局完全符合面積律
正因爲如此，才有很高的升阻比，如果用同樣的發動機，同樣的起飛重量
J-20超巡能力必然在F-22之上，超音速機動性同樣更強，因爲渦生力和配平變態的兼顧
只是在隱身功能上不如F-22，但照標準計劃改進後的J-20在隱身方面也落後不多
Ｊ２０重量多少啊 推重比你有考慮嗎 還說超音速巡航勝過Ｆ２２ 真是宇宙笑話又一件了
你去比較Ｆ２２引擎推力有多大好嗎 還有Ｊ２０與Ｆ２２重量
全世界戰機都是愈輕量愈好 機身也不能太長太大這會影響機動能力（就像前蘇聯米格３１沒有ＳＵ２７靈活敏捷）
中國Ｊ２０就是又大又重 才會裝備前翼與腹異來提高機動度 但這樣又會犧牲暱蹤效果
再說鴨式布局 你竟然指稱是小前翼 看來你又曾加笑果了
來看看專家意見 不要自編自爽
F-22空重１９頓比Ｊ２０小巧輕量許多但是起飛重量可以達到３８頓
F-22 與 PAK FA也都比巨大的Ｊ２０靈活敏捷
The J-20 is a single-seat, twin-engine aircraft which appears to be somewhat larger and heavier than the comparable Sukhoi T-50 and Lockheed Martin F-22 Raptor.[2] Bill Sweetman estimates that it is approximately 75 feet （23 m） in length, has a wingspan of 45 feet (14 m) or more, and is expected to have a takeoff weight of 75,000 to 80,000 pounds (34,000 to 36,000 kg) with internal stores only.[2][27] The prototype could be powered by twin 32,000 pounds (15,000 kg) thrust Saturn 117S engines provided by Russia[28], a sign of problems in the development of the aircraft, according to Pentagon spokesman Col. David Lapan.[29] Chinese sources have claimed that production aircraft will be powered by two 13,200 kilograms (29,000 lb)/WS-10 class high thrust turbofan engines fitted with Thrust Vector Controlled (TVC) nozzles, both made in China.[6] However Richard Aboulafia has said that the WS-10 engine has suffered catastrophic failures in flight
The J-20 may have lower supercruise speed (yet greater range) and less agility than a Lockheed Martin F-22 Raptor or PAK FA, but might also have larger weapons bays and carry more fuel |
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