Re: [情報] 波音和Saab合作的T-X公布了
: → KotoriCute : 第一個要哭哭應該是m346改良的T100 09/14 02:31
: → metalfinally: 雙垂直尾翼耶 09/14 02:45
: → notmuchmoney: 波音這次會延續優良成本控制的好傳統嗎 09/14 02:52
: 推 justice79 : 高教機只要符合需求可靠就行了，用得著玩到雙垂尾? 09/14 07:04
: → justice79 : 從後頭看還以為是新款戰機 09/14 07:09
: 推 eterbless : 這水平尾翼用在高教太銷魂了 09/14 09:03
: → kuma660224 : 但那雙垂在小型機反而是增加成本。 09/14 09:03
: → kuma660224 : 就操作成本效益，還是F20魔改機無敵 09/14 09:05
: → Piin : 那個雙垂尾就是要省錢才搞出來的 09/14 09:29
: 推 rtwodtwo : 雙垂尾會省錢 是不是搞錯什麼了? 09/14 11:08
: → kuma660224 : 多一套控制機械，只會花錢加重，不會省錢 09/14 11:12
: 推 eterbless : 難說 諾格為了高攻角把垂直尾翼加大成那樣 整體重量 09/14 11:16
: 推 defenser : 我好像看到機翼後緣跟垂尾前緣平齊？ 09/14 11:16
: → kuma660224 : 垂尾加大不一定較重。否則大家都搞雙垂尾了 09/14 11:18
: → eterbless : 也是上升 看實際公布的價格跟每小時飛行費用比較準 09/14 11:18
: → kuma660224 : 輕型機用1個大的還是較有成本效率。 09/14 11:19
: → kuma660224 : 基本機械數量多一套就不可能較省。 09/14 11:20
: → kuma660224 : 越簡單的設計才能越便宜划算。只是不抗戰損 09/14 11:21
為什麼用雙垂尾? 波音告訴你(他的)答案:
“Typically, you grow tails extremely large for high angle of attack
maneuverability and we chose to take a different path,” he says. “Size
relates to cost. The smaller and more compact, the more requirements you’re
going to meet and the more affordable is.”
SAAB跟波音的聯合聲明告訴你另外的原因:
Boeing T-X is designed to look, feel and perform like fighter aircraft.
The twin-tail design offers improved stability and is
visually similar to current and future fighters, to enhance training. Twin
tails provide excellent control, inherent speed break functionality, and
safer air refueling.
另外波音自信爆棚的發言，告訴你另一個要雙尾翼的原因:
“I think they have a very good chance of winning,” said Thompson. “No one
else is offering a dual tail. If you look at it from the front, you can see
how similar it looks to the F-35 and the F-22.”
另外這架飛機的設計有SAAB 105的血統
總之，波音的觀點是雙尾翼有助於學員視距內訓練，有助於飛行操作安全，另外
不需要花大錢去坐高強度的大型垂尾，同時還有機動性等優點。
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※ 文章網址: https://www.ptt.cc/bbs/Military/M.1473835876.A.AF5.html
推
09/14 15:16, , 1F
09/14 15:16, 1F
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09/14 15:27, , 2F
09/14 15:27, 2F
波音特別強調: 這架飛機最大的設計要點就是要在最低的價格中達到變態的性能要求..
"The design is more affordable and flexible than older, existing aircraft."
Boeing tried hard to keep the costs down, and that led to some innovations.
Some composite parts are made whole in 3D printers. Workers can prepare a
cockpit canopy in eight days, a task that used to take six weeks, according
to Boeing officials.
為了省錢，波音甚至放棄了直接加上五個硬點的設計路線(雖然要加回去也不用修改設計)
Davis cautioned Boeing is focused on winning the T-X competition first.
This is all about the trainer,” he says. “If we choose to go down that
path, we built something with a lot of growth potential.”
※ 編輯: Piin (155.69.191.255), 09/14/2016 15:42:32
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