[新聞] 波音或將考慮採用齒輪渦輪扇引擎於737MAX

看板Aviation (航空板)作者nyrnu (~告別兔年,迎接龍年~)時間14年前 (2012/04/04 21:10)推噓3(3推 0噓 3→)

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波音或將考慮採用齒輪渦輪扇引擎於737MAX 隨便亂摘如下 1. 為了對抗A320neo, 作者根據種種線索只出,波音也正考慮採用 geared turbofan engine option. 2. 空巴,波音互相指稱自己才是最強, 然而德航頭頭指出, 波音頂多2% more efficient (Note: A320neo 於2015/Q4 上線 vs. 737MAX 2017/Q4 上線, 剛好每慢一年, 領先對手1%----這算是被德航打臉了嗎?) 3. 然而,若波音願意採用 GTF, 或許可另外增加3~5% 的more efficient, 如此一來,有望大幅領先A320neo. 4. 波音聲稱, 我們目前仍只考慮採用CFM/GE Leap X engine. (而A320neo則是兩者都採用, 讓顧客選擇) 5. 作者期待2012年中,737MAX將會明朗化 (同場加映) 6. 復興採用的是PW 1100G-JM geared engine 7. For A320neo, CFM 發動機報價較 PW 來貴一些. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ http://www.bizjournals.com/seattle/news/2012/04/03/ boeing-may-be-considering-geared.html Boeing could be considering geared turbofan option for 737 Max Puget Sound Business Journal by Steve Wilhelm, Staff Writer Date: Tuesday, April 3, 2012, 2:18pm PDT Behind closed doors, Boeing may be considering adding a geared turbofan engine option to the 737 Max as a way to gain an efficiency edge against the better-selling Airbus A320neo. Rumors were rampant about the possibility at the International Society of Transport Aircraft Trading (ISTAT) conference in Arizona in March, and haven’ t let up. The possibility was the subject of a recent article by AirInsight, an online aerospace publication. “I think this is more than just speculation, based on everything I heard at ISTAT and everything I’m hearing independently,” said Scott Hamilton, president of Leeham Co. LLC in Issaquah and a well-known aerospace analyst, who was at the show. “I don’t think this is just idle curiosity.” Adding a Pratt & Whitney geared turbofan option would match the engine options for the Airbus A320neo, which offers the CFM/GE Leap X engine as well as the Pratt & Whitney geared turbofan. Airbus and Boeing each claim its current re-engined narrow body aircraft is more efficient than the other, but Lufthansa executives told Hamilton that Boeing is only 2 percent ahead. “If you accept the Lufthansa analysis, that Max is only 2 percent more efficient than neo, if Boeing could get another 3 to 5 percent with GTF, that would be a huge blow to Airbus and a huge advantage to 737,” Hamilton said. Boeing spokeswoman Lauren Penning said that Boeing is focused on the Leap X engine for the Max, and has no plans. “There’s not a team on the Max considering otherwise,” she said. But for Boeing, adding the Pratt & Whitney geared turbofan must be tempting, because orders for Airbus’ re-engined A320neo remain far ahead of Boeing's, with 1,400 orders versus Boeing’s 451. While Boeing has said it has about 1,000 firm commitments to its re-engined plane, so far, only 301 have been ordered this year. “I expected to see a lot more of those commitments firmed up in the first quarter, and that hasn’t happened,” Hamilton said. The geared turbofan engine is unique in that it uses a gearing system to make the fan revolve more slowly than the engine’s inner core, increasing the efficiency of both. While Boeing has contractual arrangements with CFM/GE, which makes the current 737 engines, there may be contractual room to add a geared turbofan option, according to conversations Hamilton had with Mike Bair, Boeing vice president of Advanced 737 product development, last year. Hamilton added that he expects some decision as early as midyear. “If Boeing were to proceed with this — and at this point I have no way to gauge — I think we’re months away,” he said. “It can’t be too much longer, because they have a lot of airplanes to firm up commitments.” -- 航空/鐵道/都市資料找不到? Well, the opinion may be on the way! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.25.15.188