今天的飛行項目比之前更具挑戰性,Leo 一早就告訴我:「今天我們要練習 Slow Flight、Basic Stall、Advanced Stall,還有 Wing Drop Stall。」93Please respect copyright.PENANAaunDiWx9hT
93Please respect copyright.PENANAq0VaPOfmIk
光是聽到「失速(Stall)」這個詞,我心裡就有些發毛。從開始學飛以來,我一直被教導要保持足夠的飛行速度,以避免失速。現在,Leo 卻要我刻意進入失速狀態?93Please respect copyright.PENANAq8Komtr5DL
93Please respect copyright.PENANAxuFer1WgV7
「不用擔心,這些都是訓練飛行員如何正確應對失速。」Leo 笑著說:「如果你知道怎麼恢復,就不用害怕。」93Please respect copyright.PENANAJyOc4NfeEW
93Please respect copyright.PENANAYQ7ejDMPAQ
他讓我坐下,然後開始了一場 30 分鐘的簡報,簡單講解 什麼是失速(Stall),以及 哪些情況最容易發生失速。93Please respect copyright.PENANAGcKH6POx2y
93Please respect copyright.PENANAHvUGMD8Zmr
「失速並不是指發動機停轉,而是機翼失去升力的狀態。」Leo 在白板上畫了一架飛機的翼剖面:「當Angle of Attack, AOA超過臨界角,氣流無法順利流過機翼,升力就會急劇減少,飛機進入失速。」93Please respect copyright.PENANAESQSVE7xqy
93Please respect copyright.PENANAs7vo003cYd
他指著翼剖面上的氣流:「Remember LIFT=IAS x AOA。當飛機速度過慢,或者機頭抬得過高時,攻角增加,升力減少,最終導致失速。 這種情況如果發生在低空,比如起飛或降落時,可能會非常危險。」93Please respect copyright.PENANAW83dfhrJqV
93Please respect copyright.PENANA8L04GXOuHG
Leo 在白板上寫下幾個關鍵時刻:93Please respect copyright.PENANAa495sCaH15
起飛、轉彎、降落、過度操控,這些情況一定要特別留意。93Please respect copyright.PENANAbUrOjYGMv0
93Please respect copyright.PENANARwXCl8BOqy
Leo 在白板上寫下「如何辨別失速?」然後簡單說道:「空速下降、操控遲鈍(Sluggish)、機身顫抖(Buffeting)、Stall warning horn警報響起,最後機頭或機翼可能突然下墜,這些都是失速的徵兆。」93Please respect copyright.PENANAjaVi3S9LQD
93Please respect copyright.PENANAt5lCQIC1ZQ
Leo 放下筆,望著我:「當你注意到這些徵兆時,你就知道飛機正處於臨界點。關鍵是——你要知道如何正確恢復,而不是驚慌。」93Please respect copyright.PENANAAtBJMeLc2S
93Please respect copyright.PENANAyParaLawNk
我深吸一口氣,仔細記住這些要點,然後點頭:「明白了,現在……」93Please respect copyright.PENANAXcQvoNgoy2
93Please respect copyright.PENANA3nuPew8iz2
Leo 露出一抹笑意,站起身來:「沒錯,現在就讓你真正感受失速的感覺。」93Please respect copyright.PENANAk8haOkFU22
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93Please respect copyright.PENANAwSLPHveCBG
飛機離開跑道後,我們爬升到安全高度,Leo 看著我,微微一笑:「在進行Slow Flight 和失速訓練前,我們要先做 HASELL Check,確保一切安全。」93Please respect copyright.PENANAZNqRT67BSn
93Please respect copyright.PENANAhw4eBm3qC8
H – Height:確認飛機有足夠的高度恢復失速,通常至少 2500ft以上。93Please respect copyright.PENANAknwp2yhJMw
A – Airframe Configuration:檢查襟翼(Flaps)、起落架(Landing Gear),確認設定是否適當。93Please respect copyright.PENANAHSzmBFQiEN
S – Security:確保 Doors & Hatches 關閉,安全帶繫好。93Please respect copyright.PENANAa9VBX9pivD
E – Engine:檢查 Engine instruments 在綠色區域內,若低於 2000 RPM,開啟化油器加熱(Carb Heat)。93Please respect copyright.PENANASg3zyHOS46
L – Location:確保飛機不在人口密集區域上空,以免影響地面安全。93Please respect copyright.PENANApJpOCtUNgP
L – Lookout Turn:進行 360° 觀察,確保周圍空域無其他飛機。93Please respect copyright.PENANAnj9g6uMoAs
93Please respect copyright.PENANAwCSV1X5zXP
「減油門,維持飛機在接近失速的速度,但不真正進入失速狀態。」93Please respect copyright.PENANApxssaVNogU
93Please respect copyright.PENANAa9YJ43F9Xr
我慢慢減少油門,拉升機頭保持高度,看到空速計的指針逐漸下降,飛機開始感覺沉重,操控變得遲鈍,彷彿一切動作都被放慢了一拍。93Please respect copyright.PENANAsfNNQDDGlC
93Please respect copyright.PENANAQEKMXVo6Fy
「這就是 Slow Flight。」Leo 說:「現在試著轉彎,感受機翼的反應。」93Please respect copyright.PENANAZ9rNnWoxo7
93Please respect copyright.PENANAKXaZJC5FYu
我小心翼翼地轉動操縱桿,飛機開始慢慢傾斜,但很快我發現了一個明顯的變化——轉彎的半徑比平常短了很多。93Please respect copyright.PENANAAbsGPPX3pb
93Please respect copyright.PENANACiYVxOnxQZ
「這是讓你學會在低速狀態下,仍然能夠控制飛機。」Leo 補充道:「降落時,或者在能見度低、迷路、失去方向的情況下,都是在這個速度範圍內進行的。」93Please respect copyright.PENANAPKNyUGWoLr
93Please respect copyright.PENANAlvAse4V8DG
「好,現在我們來試試真正的失速。」Leo 語氣平穩:「記住,應對失速的方法只有一個——降低 AOA。」93Please respect copyright.PENANAfWCuz2BLWr
93Please respect copyright.PENANAhoWaxVli87
「我們回到 Clean Configuration,開始 Basic Stall。」Leo 說。93Please respect copyright.PENANAgK4gnTAMcD
93Please respect copyright.PENANAhVs6X72BNT
我按照指示減油門,讓飛機速度慢慢下降。很快,我開始感受到 Leo 在簡報時說過的失速徵兆——空速計指針下降、操控變得遲鈍、機身開始輕微顫抖,然後刺耳的失速警報響起。93Please respect copyright.PENANAESjsLFQnir
93Please respect copyright.PENANAnFhbI0sjQM
「嘟——嘟——嘟——」93Please respect copyright.PENANAaaz6jgaVgm
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這一刻,我的大腦告訴自己:保持冷靜,按照訓練來恢復!93Please respect copyright.PENANAZJTdRDnz50
93Please respect copyright.PENANAxVecalAZkw
但就在機頭開始下沉的瞬間,我的身體卻下意識地拉高機頭,試圖「拉回」飛機,結果反而讓失速變得更嚴重!93Please respect copyright.PENANAgSbSgq5orM
93Please respect copyright.PENANAlQtWAGvtlH
「Release back pressure!降低 AOA!」Leo 立刻糾正。93Please respect copyright.PENANAfOytLDC1uV
93Please respect copyright.PENANAaKw7EPKg1w
機身突然一沉,飛機完全失去升力,機頭急速下墜——這才是真正的失速!93Please respect copyright.PENANADH5P4QHqmp
93Please respect copyright.PENANAmla0unmN1J
我強忍著本能的恐懼,終於意識到自己的錯誤。這時候,拉高機頭只會讓攻角更大,讓失速更加嚴重。唯一的辦法,就是讓機頭自然下降,恢復正常的氣流。93Please respect copyright.PENANAXSih8iw6n8
93Please respect copyright.PENANAL5v82EnQG4
我鬆開操縱桿,輕輕向前推,讓機頭下沉。短短幾秒內,空速開始回升,我趕緊推動油門增加動力,然後感覺到操控變得靈敏,飛機開始恢復正常飛行。93Please respect copyright.PENANAWB6K2WlXZa
93Please respect copyright.PENANAu7pWGM1tR3
幾秒鐘後,失速徵兆消失,機頭回到水平姿態。93Please respect copyright.PENANA69GbTRoZsa
93Please respect copyright.PENANAc4PnutQk8K
我大口喘氣,額頭滲出冷汗。這只是訓練,卻讓我感受到真正的危機感——如果剛才是在低空,結果可能完全不同。93Please respect copyright.PENANAZ2HMUzcfRm
93Please respect copyright.PENANAUsXEiYYRUN
Leo 看著我,微微一笑:「這就是為什麼訓練很重要。遇到失速時,本能地拉機頭。但現在,你知道該怎麼做了吧?」93Please respect copyright.PENANAFpFobXJoV2
93Please respect copyright.PENANAPXYshP15cK
我點點頭,心跳還沒完全平復,但腦海裡只剩下一個念頭:「遇到失速,唯一的應對方法,降低 AOA。」93Please respect copyright.PENANALFFaXBgmu9
93Please respect copyright.PENANAlnyqTox2UV
93Please respect copyright.PENANAuYkI6fkHSn
「I have control。在現實飛行中,很多失速發生在降落過程中,因為這時候飛機處於低速、高攻角,襟翼放下來增加升力,但如果沒控制好,也可能讓失速變得更嚴重。」Leo 一邊講解,一邊調整油門,讓飛機爬升至安全高度。93Please respect copyright.PENANASPmC0hmXAR
93Please respect copyright.PENANAX0pa0TACs7
「這次,我們模擬進近降落時的失速狀態。2200RPM,White Arc 放下Full Flaps,然後進入失速。」93Please respect copyright.PENANAz0H5KmNq76
93Please respect copyright.PENANAk4tri5hiwg
我慢慢放下襟翼,感覺飛機的升力增加了一點,但也變得更容易飄忽不定。我再次拉高機頭,讓空速下降,這次的過程與之前有所不同——由於襟翼會降低失速速度(Stall Speed),所以警報反而比之前更晚才響起。93Please respect copyright.PENANAlUawl0mtPH
93Please respect copyright.PENANA0NLzMsbgna
Leo 說道:「恢復方法還是一樣——降低 AOA,推油門,讓空速回升!」93Please respect copyright.PENANA5z3iLm7k1M
93Please respect copyright.PENANAR7yIH5NyEI
我立刻鬆開操縱桿,推油門增加動力,等待飛機回復升力,幾秒後,機頭回復可控狀態,飛機恢復正常飛行。93Please respect copyright.PENANAfcCkJwp9uZ
93Please respect copyright.PENANALAV7hUAbrO
我長長地吐了一口氣,這次的失速比剛才更劇烈,但至少我已經知道該怎麼應對。93Please respect copyright.PENANAyt9YhF6UVk
93Please respect copyright.PENANA4bpv1Oh8vK
Leo 沒有停下來,而是繼續指示:「現在,我們來試試 Wing Drop Stall,這是很多新手飛行員最容易犯錯的地方。」93Please respect copyright.PENANA8EFNsvNXrG
93Please respect copyright.PENANAJMt8vLYVmL
「這次,我們一樣進入失速,但會刻意製造不對稱的失速,看看機翼如何反應。」93Please respect copyright.PENANAIFqrCl8urT
93Please respect copyright.PENANA9Zo551b13Q
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Leo 在飛行前簡報中,特別強調了 Wing Drop Stall(機翼下墜失速) 的應對方法。93Please respect copyright.PENANAR3Sq51WnZO
93Please respect copyright.PENANAX4SOCh9Va4
「當其中一側機翼比另一側先失速時,飛機會開始不對稱下墜,這就是 Wing Drop Stall。很多飛行員的本能反應是用Ailerons來糾正滾轉,但這其實會讓問題變得更糟!」Leo 指著白板上的示意圖。93Please respect copyright.PENANAjNtYvpcDC8
93Please respect copyright.PENANAjoTnEsa37A
「真正的應對方法只有三個步驟:降低 AOA,用Rudder修正滾轉,油門補充動力。」93Please respect copyright.PENANAXeva0fqQ6t
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「準備好了嗎?」Leo 問道。93Please respect copyright.PENANAhjXE7c2R9q
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「準備好了!」我回應,心跳稍微加快,但這次,我知道該如何應對。93Please respect copyright.PENANA4PlffbZVnx
93Please respect copyright.PENANAL7dbambFt6
我推滿油門,拉高機頭,模擬進近降落時的失速狀態,並放下 Full Flaps(全襟翼)。這次,我們故意製造不對稱的失速條件——當飛機進入失速時,左翼率先失速,導致機身向左翻滾!93Please respect copyright.PENANAudXNZtMwas
93Please respect copyright.PENANA5GLyELHli1
幾乎是一瞬間,我感受到飛機快速向左側下墜,機頭朝地面傾斜,旋轉的感覺讓人不由自主地想抓緊操縱桿。93Please respect copyright.PENANAmunPEPaWG2
93Please respect copyright.PENANApnp2wjqUcV
「降低 AOA,High Rudder!」Leo 提醒。93Please respect copyright.PENANAQCzDgKB5C9
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這次,我沒有慌張,而是按照剛才學到的步驟——幾秒後,飛機穩定下來,回復正常飛行。93Please respect copyright.PENANAV8kft89hZm
93Please respect copyright.PENANAqRA9BOL1j6
「做得好!這就是正確的應對方式!」Leo 露出滿意的笑容:「剛才如果你用副翼修正,飛機可能已經進入Spin了。方向舵才是你最好的工具!」93Please respect copyright.PENANAj3SrEeiG2o
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這次的訓練比我想像中更具挑戰性,但也讓我學到了最重要的一課——正確的反應,勝過本能的反應。93Please respect copyright.PENANAdbhEVWWF7Y
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當飛機穩穩降落在跑道上,我才發現,我的雙手已經比剛才穩定了許多。93Please respect copyright.PENANA6EHnYHbHOl
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今天,我不僅學會了如何應對 Power-On Stall,還掌握了 Wing Drop Stall 的正確處理方式。93Please respect copyright.PENANAOzk1poopkE
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這一天,我比昨天更加接近真正的飛行員了。