史上最大的FOD

Question

這是五月十二日一架日航飛機 747班機在洛杉磯機場被推離機門準備起飛之際，其左側機翼外側的 GE CF-6 引擎吸入了一個史上最大的 FOD，所有的報導都沒有說明為何會發生這樣的事情。
除了空運貨櫃離引擎太近的原因外， 飛機引擎在Push Back 時馬力是否全開到可以產生這麼大的吸力？從以下影片看到為何日航飛機仍不關掉引擎，繼續帶著這個拖油瓶往前移動？
知識家上的專家們是否可以開釋一下？
http://www.flightglobal.com/blogs/unusual-attitude/2009/05/jal-boeing-747-400-sucks-lugga.html
http://www.dvorak.org/blog/2009/05/12/japan-airlines-jet-engine-sucks-up-cargo-container/comment-page-1/

圖片參考：http://news.sky.com/sky-news/content/StaticFile/jpg/2009/May/Week2/15279995.jpg

KLAXRCTP · Accepted Answer

Flight:        JL061
Date:          11MAY
A/C Reg:    JA8922
Place:         LAX
Time:         Around 1340L
Taxiway:    On C 
Occurred:   Pass C10 before P

Aircraft clear to push back from gate 101 onto taxiway C with tail East (pass C10 engine off).

Start engine on taxiway C

Tower instructed for taxi on C and turn right on P (plan to use runway 24L for take off)

One LAN container sucked into JAL number one engine after JAL passed C10 (there two service roads crossing C between C10 and P)

After the accident, continued right turn onto taxiway P.  Aircraft stopped on P after right turn and contact LAX tower for assist.

2009-05-14 04:30:13 補充：
As you already knew, no engine start at gate or during push back unless APU problem.  If needs to start engine at gate, most of the time it will start from number 4 engine (of course sometime can also start from number 1 engine).

2009-05-14 04:32:27 補充：
Because the accident happened between C and C10 where the service road at (also service road between taxiway B and C), reporter just assumed engine started at gate 101 or started during push back and suck up the container during push back.

2009-05-14 04:48:33 補充：
/// correction /// correction ///

TOWER INSTRUCTED FOR TAXI ON C AND TURN RIGHT ON Q (not P)

AIRCRAFT STOPPED AT TAXIWAY Q (not on taxiway P)

SORRY

2009-05-14 04:52:24 補充：
Please reference LAX AIRPORT DIAGRAM

http://commons.wikimedia.org/wiki/File:LAX_airport_map.PNG

2009-05-14 11:58:08 補充：
After JAL parked at taxiway Q and after short investigation, subject aircraft needs to tow off from taxiway to remote gate.  The picture you provided was the time that aircraft prepared to tow off.

2009-05-14 12:06:10 補充：
There was another incident occured after aircraft starts to tow.  Maintenance forgot to insert nose gear pin and break the tow bar while making left turn from taxiway Q to Q1.

2009-05-14 12:11:47 補充：
Because of this incident, all passengers onboard JAL flight were disembarked from aircraft using stair on taxiway Q and transfer by bus to TBIT terminal.

2009-05-14 12:28:51 補充：
13:20L JL061 pushed back from gate 101
13:30L Number one engine sucked up the empty container
13:33L airport authority arrived at taxiway Q

2009-05-14 12:29:45 補充：
14:15L Prepared to tow-off from taxiway Q
14:20L Tow-bar broke
14:25L All passengers started to disembarke from aircraft

2009-05-14 12:30:33 補充：
15:25L Start to tow-off again from taxiway Q
-- above time were estimated --

2009-05-15 21:31:38 補充：
大師言重了
從日航由101後推到第二次拖離事故現場
當時剛好小弟在現場目睹一切 (實在是英英美代子)
我想當時在場的人員
可能小弟是唯一會上知識+的吧

匿名使用者 · Answer

Specifications (CF6-50)

An FAA cutaway diagram of the CF6-6 engine
Data from General Electric.

2013-10-25 21:52:15 補充：
General characteristics
Type: Turbofan
Length: 183 in (4.65 m)
Diameter: 105 in (2.67 m)
Dry weight: 8,966 - 9,047 lb (4067 kg - 4104 kg)

2013-10-25 21:52:26 補充：
Components
Compressor: 1 stage fan, 3 stage low pressure, 14 stage high pressure axial compressor
Combustors: annular
Turbine: 2 stage high pressure, 4 stage low pressure turbine

2013-10-25 21:52:37 補充：
Performance
Maximum thrust: 52,500 - 61,500 lbs (234.1 - 274.23 kN)
Overall pressure ratio: 29.2:1 - 31.1:1
Bypass ratio: 4.24 - 4.4
Thrust-to-weight ratio: 5.6:1 - 6:1

2013-10-25 22:00:22 補充：
https://en.wikiversity.org/wiki/Jet_engine_design_point_performance

沉默的小號手 · Answer

小弟試著說明：
誠如回答者所提到，空貨櫃是在滑行中吸入 1 號發動機的，
而蔡大師提供的影片已是要將飛機拖回登機門時的情形，

至於大師聽到疑似引擎的聲音，
我想應該是該架飛機 APU (輔助動力器) 運轉的聲音。

史上最大的FOD

3 個解答