Mac
Topic Author
Posts: 287
Joined: Thu May 24, 2001 11:56 am

Landing Configured Ditching

Sat Jun 16, 2001 8:15 pm

I just got off the web-site of retired Pan Am pilots which had in it a photo of an airliner which was ditched at sea by a pilot who knew what he was doing...and that was ditching the aircraft in landing configuration...gear down, flaps down.
This is news???!!! Am I being told that this is not the accepted way to put a plane into the water. This type of landing configurated approach to ditching had been proven years ago by various tests which, to my knowledge, had been found the best way to do it. With full flaps and proper power settings the aircraft slows to a speed where when hitting the water, the main gear doesn't tear off but slows the plane down even more. This make for a much safer situation for passengers, crew and plane. The structure of the aircraft including wings and underslung engine pods stay on the aircraft...and the hull itself also stays in one piece giving
everyone ample time to get safe evacuation underway.

TAILDRAGGERS DON'T COUNT.
 
me
Posts: 220
Joined: Sat Oct 21, 2000 4:57 am

RE: Landing Configured Ditching

Sat Jun 16, 2001 8:46 pm

Douglas corp. recommends flaps 25 degrees and ref speed plus 10 knots for the dc9 (normal landing flaps are 40-50 degrees). Do not open the aft tailcone exit as the aircraft sits tail low in the water.

Something I hope to never experience.
 
DC-10Tech
Posts: 291
Joined: Fri Jun 15, 2001 6:40 pm

RE: Landing Configured Ditching

Sat Jun 16, 2001 10:12 pm

DC-10 procedure is flaps down, gear up.
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Mac
Topic Author
Posts: 287
Joined: Thu May 24, 2001 11:56 am

RE: Landing Configured Ditching

Mon Jun 18, 2001 12:05 am

That is my whole point! Go back and read message. The "Pilot who did it Right" Ditched his plane at sea by dropping flaps and LANDING GEAR. The EXTENDED main gear digs into the water prior to the hull contact...immediatly slows the aircraft down even more...preventing damage a gear up water landing would introduce. Tests done many years ago showed that this type of a water landing keeps the aircraft pretty much intact...where a gear up landing can lead to hull fracture
and engine pod stress which transfers to other structural failures.
 
DC-10Tech
Posts: 291
Joined: Fri Jun 15, 2001 6:40 pm

RE: Landing Configured Ditching

Mon Jun 18, 2001 3:43 am

Are you kidding? Hitting the water in a -10 (and any high standing aircraft for that matter) would tear the gear off a risk causing the aircraft to tumble. Think of ditching like landing a boat, or a float plane. You want a smooth bottom and as much surface area as possible to contact the pavement. The engine mount bolts are design to shear the engine off if enough stress is encounter. In other words, the engines would go before the wings. This is of course, assuming the aircraft lands sqaurely!
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galaxy5
Posts: 1952
Joined: Sat Mar 18, 2000 10:09 pm

RE: Landing Configured Ditching

Wed Jun 20, 2001 10:17 am

well, a C-5 ditches with flaps at full and gear extended.
"damn, I didnt know prince could Ball like that" - Charlie Murphy
 
DC-10Tech
Posts: 291
Joined: Fri Jun 15, 2001 6:40 pm

RE: Landing Configured Ditching

Wed Jun 20, 2001 10:23 am

LOL, yeah, but gear down on Fred is barely noticeable with all that plane sitting on top of it. Heck, a plane that size will probably shed is gear and not even notice it!  Smile/happy/getting dizzy
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Guest

RE: Landing Configured Ditching

Thu Jun 21, 2001 10:03 pm

Okaaaaay, does this include something as big as a 747?
And where can I find any footage of these sea ditching tests?

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