要是不知道大佬做什麼工作的...肯定以為我是開拖拉庫或是做苦力的。
為什麼買樂透都沒有這麼准?公司有半百以上這機型,為什麼大佬可以連續兩天都抽到同一架飛機 ...一架駕駛艙跟桑拿房一樣養生的!真他媽的37度熱到靠泊往生彌留了。
趁機跟大家機會教育一下。飛機在地面的時候,冷氣是由裝在飛機屁股里的一顆小引擎(APU)提供。這顆APU叫做Auxiliary Power Unit(輔助動力系統),飛機在地面上發動機沒有啟動時,它可以提供飛機的電源跟氣源。 簡單來說就是顆吃油的小發電機跟冷氣啦。
至於APU所提供的氣源、包含了冷氣跟啟動發動機的高壓氣源。大家搭飛機時...飛機客艙裡面爆炸熱最大的可能性就是APU不好,也或著是飛機老舊冷氣變黃昏牌(裡面空調濾網年久堵塞影響效能)。如果下次大家登機時發現飛機兩旁接了條黃色的大管子(附圖),代表飛機的空調可能不良或是APU壞了。因為這條是外接的冷氣管!
另外還有一種情況... 下次各位仔細觀察會發現,飛機後推啟動發動機的時候客艙會突然變得非常安靜(空調聲消失),然後客艙就變的非常非常的熱~熱到靠泊,直到飛機要滑行前冷氣聲又出現,空調才又恢復。
這是因為噴射機的發動機啟動,要靠高壓空氣去吹發動機轉子、才可以啟動引擎。就好比汽車要用皮帶帶動啟動引擎似,只不過噴射發動機是靠高壓氣體帶動而啟動。因為APU就這麼小小一顆,魚與熊掌不可兼得,要高壓氣體就沒冷氣,所以飛機啟動發動機時都必須把冷氣關掉、把氣源留給啟動轉子用。下次熱到靠泊時就懂了吧!
附帶一提:華航早年A340剛引進時好驕傲、好炫耀,冬天台北直飛紐約可以non stop直飛耶。但是因為340的performace沒有400好,冬季一趟美國可以慢兩個小時。所以A340 在全球有大家都笑稱他是 an aircraft with 5 APU.(一個有五顆APU的飛機)
同時也有1部Youtube影片,追蹤數超過0的網紅CarDebuts,也在其Youtube影片中提到,Nissan will unveil two new fully customized vehicles at the Tokyo Motor Show to improve city mobility: the new Paramedic Concept and the all-electric ...
auxiliary power unit 在 譚文豪 Jeremy Tam Facebook 的精選貼文
【飛行教室】點解出晒煙都唔洗救火?
//本身是民航機師的立法會議員譚文豪估計,該架客機A330很可能在降落後因機尾的輔助動力系統(APU, Auxiliary Power Unit)過熱或起火,觸發機尾的滅火裝置自動啟動及釋出所有內藏的滅火化學品,結果一度產生大量白煙。最終化學品成功把火救熄又或是把APU降溫,故消防員到場後已毋須開喉救火。
但譚文豪稱,他亦不排除另一可能性是的客機APU的溫度感應器出錯即誤鳴,令機尾滅火裝置錯誤地被自動啟動,故事件真相仍有待泰航及民航處方面調查。//
#蘋果照妖鏡 #果然一視同仁 #咩表情呀哈哈
auxiliary power unit 在 蔡至誠。PG財經筆記Simple Is The Best Facebook 的最佳貼文
今天趁著早上狂風暴雨跑道淹水, 抽空去看了近期航空的相關電影” SULLY”.
先就電影本身短短評論一下, 一個半小時的片長短小精悍, 緊湊不失幽默, 還原度很高, 如果有看過Air Crash Investigation (Season 10 Episode 05) Hudson Splash Down. 就會知道, 連飛行員在這208秒內所講的話/做的事, 電影都有真實重現.
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接下來我想特別提一下電影中對NTSB(National Transportation Safety Board.)的刻劃.
一部電影通常會有英雄, 有反派. 而“SULLY”裡面很明顯為了劇情張力, 把NTSB對”Human Error”的探討拍的很具攻擊性, 試圖攻擊這位電影裡英雄的地位.
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先簡單介紹一下空難的調查.
一般來說, NTSB對一事件的調查, 大方向都會包括:
1.Enviorment.
2.Mechanical Failure.
3.Human Error.
而一場空難的發生, 通常也都是這三大項因素之綜合所造成.
以這件水上迫降的事件來看:
1.Environment 是”假設”鳥擊;
2.Mechanical Failure 是”假設”雙引擎失效;
3.Human Error就是”假設”飛機可以好好的回跑道降落,但飛行員做了錯誤的決定.
NTSB調查成員一定要充分假設並驗證以上三種因素後,才能完成一次案件的調查。
****
而以NTSB的立場, 一定要從中立的角度出發. 以下我引用涉及此次調查的NTSB成員說詞:
“One of most challenging thing in this case was, nobody want to sully Sully. You know, he was the hero in this case, and we were the one who was potentially going to pick up the hard work he did, and try to find out what he did and whether it was right or not.”
可以得知, 實際上NTSB在當時調查的壓力, 是他們需要把一位英雄假設為狗熊------ 這其實並不是他們所想要的.
對飛行有基本了解的人都知道, 能這樣安然降落在水上, 是非常不容易的事情. 何況是NTSB這種專業小組. 但他們必須質疑任何可能, 畢竟這是他們的工作.
因此我認為, 電影裡NTSB看似想歸咎於Sully的表現, 是有被誇大描寫的成分.
(但Sully事後的心境可以理解, 好的飛行員一定也會自我反省/質疑是否做了錯誤的決定)
個人觀感: 我覺得當時NTSB的調查應該是在與飛行員討論後, 完善考慮到人為因素並做出最後判斷. 而不像電影所演, 被飛行員當面打臉.(畢竟電影需要戲劇效果)
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附註一些我覺得挺特別而電影未提及的事情:
1.模擬過程中, 約50%的飛行能成功飛回機場,50%墜毀(並非像電影中給人每次模擬都成功的感覺), 而加入35秒判斷時間後, 沒有一次成功落回機場.
2.對Environment(鳥擊)的調查還包括採取鳥屍體的DNA, 判斷種類/大小/習性
3.對Mechanical Failure的調查甚至有質疑該引擎為什麼遇到鳥擊就total failure. (其實調查就是要不斷質疑…)
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最後, 如果有興趣想去看這部電影的朋友們可以特別注意一下:
1. 影片中提及Sully機長靈機應變, 在引擎失效後馬上打開APU (Auxiliary Power Unit.位在機尾的發電機.) 目的在於, 除了維持基本電力設備運作外, 最重要的是它維持了Airbus的飛行電腦系統. 這個系統在迫降中扮演了非常重要的腳色, 因為它能主動協助飛行員, 精準確保飛機在最後一刻前不會進入”失速”狀態.
白話一點就是當飛行員操作有出一點點瑕疵時, 電腦會自行修正飛行員的input.
有點像汽車的ABS系統, 如果煞車踩太多它會主動介入, 避免車子打滑的道理一樣.
2.迫降前Sully機長問副駕駛一句話“You got any Ideas?”是當時真的有講的.
而電影沒演到的是, NTSB的調查員事後有特別讚賞兩位飛行員:“ Continue communication (only when necessary) to the end”. 持續必要的溝通並交換意見是組員CRM(Crew Resource Management)中重要的一環.
3. 副機師有Call out airspeed and altitude. – 在緊急事件中, 兩位飛行員的分工很重要. 一位負責飛行會說”My aircraft” 負責專心飛行,而另一位說”your aircraft” 後會開始監控所需儀器, 增加雙方的Situational awareness.(並幫忙放flaps, 做checklist等等) 電影中都有完整呈現.
4. 電影中救人的船長, 蛙人, 都是由真實事件中的本人來擔任演出. 很有趣
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最後附帶Air Crash Investigation (Season 10 Episode 05) Hudson Splash Down的網址給大家, 如果有興趣對該事件更深入了解, 可以點進去看! 祝大家周末愉快囉~
https://www.youtube.com/watch?v=RuxCBYAaZ9M
auxiliary power unit 在 CarDebuts Youtube 的最佳貼文
Nissan will unveil two new fully customized vehicles at the Tokyo Motor Show to improve city mobility: the new Paramedic Concept and the all-electric e-NV200 Fridge Concept.
Packed with new technologies and features, the new Paramedic Concept will be Nissan's fifth-generation ambulance and builds on the success of the previous versions, which are sold exclusively in Japan. The next-generation ambulance is based on Nissan's NV350 Caravan, providing better comfort for the patient and a better work environment for paramedics and drivers.
The company will also lift the lid on its solution to urban delivery challenges and launch a modified, all-electric Nissan e-NV200 Fridge Concept.
The Fridge Concept's compact size will make it easier to park in urban environments, where large delivery trucks are often prevented from stopping. Equipped with an additional battery pack in the cargo space to power a refrigeration unit, the Nissan e-Fridge will be able to store chilled foods.
"Our fifth-generation ambulance will offer enhanced features that will make a real difference to people's lives," said Ashwani Gupta, senior vice president of the Renault-Nissan LCV Business Unit. "The new Paramedic Concept contains vital life-saving equipment to respond to emergencies, often in remote areas.
"Meanwhile, the e-NV200 Fridge Concept will create huge value for commercial users – generating more business, as well as reducing the cost of ownership. With zero emissions, it'll be perfect for busy urban environments where larger vehicles are often prohibited."
Other unique elements packed into the new ambulance include Nissan's industry-leading Intelligent Around View Monitor and technology to reduce the spread of germs.
The ambulance also carries a lithium-ion auxiliary battery that supports life-saving medical equipment when patients are in remote areas or in need of emergency assistance. It also contributes to CO2 reduction, as well as external and internal noise reduction.
Nissan plans to start sales of the ambulance in Japan in fiscal year 2018 and aims to double annual sales of the ambulance compared with the previous model.
Also featured at the Tokyo Motor Show will be the NV350 Caravan, which was launched in Japan in the summer.
Intelligent Emergency Braking, Vehicle Dynamic Control with traction control system functions and Hill Start Assist, previously available only on some two-wheel-drive van grades, are now standard on all NV350 Caravan van models. In addition, Intelligent Around View Monitor has been installed for the first time in vehicles of this class in Japan.

auxiliary power unit 在 Auxiliary Power Units (APU) - Pratt & Whitney Canada 的相關結果
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auxiliary power unit 在 Auxiliary Power Unit (APU) - SKYbrary Aviation Safety 的相關結果
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auxiliary power unit 在 輔助動力系統- 維基百科,自由的百科全書 的相關結果
輔助動力系統(英語:Auxiliary power unit,縮寫APU)的主要用途是在主發動機於停止狀態時,不依靠外部器材供應電力。不同種類的輔助動力系統可以安裝在各種飛機、 ... ... <看更多>