Simviation Forum - 767 main gear

Jul 22^nd, 2003 at 3:43pm

Craig. Offline
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Birmingham

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strange question maybe but it has bugged me for a while.
why on earth do the main landing gear on the 767 tilt backwards? and not forwards, now hears why i ask.
i have traveled on the 767 twice once between LGW and boston on delta (absolute horrible flight) and also between LHR and AMS on a klm flight the flight was only a 3rd full why they used a heavy on that 40 min flight i dont know. anyway on both flights the landings seemed rather rough and i dont know if that has to do with the gear or just bad flying. also on rotation the gear seems to just float into the air not actually stay on ground like the 777 to help get more speed incase of tail strikes.
strange maybe but thanks to anyone who can help.

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Reply #1 - Jul 23^rd, 2003 at 2:38pm

Mr. Bones Offline
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the 767(-400) uses the same landing gear (and tires and brakes i think, not sure) as the 777...so maybe that's the reason why it reacts the same as the 777's gear Wink

both landing gears are very very
sofisticated...eg the "smart brakes" and the camera's on the new 777 for an eye outside during taxiing...

Raw power...the J-58.&&&&&&My Anet collection.&&

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Reply #2 - Jul 24^th, 2003 at 5:05am

Craig. Offline
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Birmingham

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thanks tounge, but they use a differant tilt mechanism.
like this

i was just wondering why the 767 tilts back and the 777 tilts forward and if this is the reason why both landings were rather bumpy

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Reply #3 - Aug 6^th, 2003 at 7:03pm

Ivan Offline
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777 is longer, has bigger wings and more space between the bogies.

i think it has something to do with the center of gravity while landing...

777: CoG somewhere behind the main wheels
767: above or forward of the main wheels

Russian planes: IL-76 (all standard length ones), Tu-154 and Il-62, Tu-134 and An-24RV&&&&AI flightplans and repaints can be found here

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Reply #4 - Aug 7^th, 2003 at 4:52am

Mr. Bones Offline
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CoG also depends on amount of fuel, cargo,...

Raw power...the J-58.&&&&&&My Anet collection.&&

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Reply #5 - Aug 7^th, 2003 at 5:04am

Mr. Bones Offline
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by the way, now i think of it, i know a guy who's a captain on the 767 and flies for KLM. when i see him, i'll ask him why the gear tilts backwards. Wink

Raw power...the J-58.&&&&&&My Anet collection.&&

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Reply #6 - Aug 8^th, 2003 at 9:00am

Felix/FFDS Offline
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You NEVER want to have the COG behind the main wheels when landing/taking off (unless you're in a taildragger.....

Quote:

777: CoG somewhere behind the main wheels

Felix/FFDS

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Reply #7 - Aug 17^th, 2003 at 9:36pm

Saratoga Ex Member

A heavy on a fourty minute flight, probably just moving it to the airport for another flight, longer, just figured they would make a little money off of it.
And this whole thing is wrong, look at the wheels, All of the 767 series gear tip fowards, FRONT wheels lower than the back wheels. ALL of the 767 series have four wheels on each of the two main gear.
The 777 series: Each main landing gear has six tires, and they tip backwards. In the pictures, the 777 is first, 767 is second.
They lean different for a few reasons. Stowage is main reason on both. A landing gear that is leaned like that takes less space (even if it doesnt seem like it) than one that is not. The 777 has HUGE wheels (I'm 6'2" and they are barely shorter than me even fully loaded). The 767 uses smaller wheels, but not by much. The 767's landing gear leans like it does for the reason of spoilers, it was found they would deploy better and set it down softly if it was tilted like that. Look on the Boeing Website, it gives a big article on it.

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Reply #8 - Aug 18^th, 2003 at 4:22am

Craig. Offline
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Birmingham

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thanks saratoga:) i consider the 767's to be tilting back dont know why:)
but thanks again

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Reply #9 - Aug 18^th, 2003 at 5:09pm

Saratoga Ex Member

Lol, no prob man glad to be of service. Grin

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Reply #10 - Aug 19^th, 2003 at 7:28am

Ivan Offline
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No, I'm NOT Russian, I
only like Russian aircraft
The netherlands

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how do they prevent that the rear wheels are in turned position when landing on the 777 (the rear pair steers along with the front)

Russian planes: IL-76 (all standard length ones), Tu-154 and Il-62, Tu-134 and An-24RV&&&&AI flightplans and repaints can be found here

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Reply #11 - Aug 19^th, 2003 at 7:44am

Craig. Offline
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Birmingham

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the rear wheels are directly connected to the front wheels when steering is involved, the steering tiller is always set in neutral when not on the ground i believe. if the tiller is centered then the wheels are centered it has little markings on it to show the differant angles of the wheels so you know exactly where they are. hope that makes sense.

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