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I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 9:56 am
by Alejandro Rhodes
I made this animation, because It has to be by analogy (the animation of the windows I saw in one of those YOUTUBE FSX paywares)

In some of the 707 paywares and neither the FSX 747 default the landing gears does not have a inclination , THEY have to be ,otherwise It would brake the landing gears..Shots will help me what I mean

animation inside Gmax with a 10 degree twisted
Image
in the game
Image

THE PROBLEM NOW
Is that I saw this video yesterday ,Now got my head confuse
http://www.youtube.com/watch?v=PdOqkiwR4OA

They Look strait which I insist It can't be ,

I look many many videos and I found this one ,It seems like it are twisted a little bit

http://www.youtube.com/watch?v=j70C7y0KPnY

Do this landing gears has this inclination as a part of the suspension?  :-/

PLEASE I know this is a silly question , But believe me ,I'm trying to make it the most realistic as possible ,I don't wanna make a move ment that doesn't exist IRL

Alex

I forgot In the FSX 747 default this movement is not there ,Instead in the old FS9 747 default it is ..This add more confuse to me :-/

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 10:20 am
by Hagar

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 10:40 am
by Alejandro Rhodes
:-/

They confuse me more

In this video you can see the 8 or 10 degree movement (is the same I link above)

http://www.youtube.com/watch?v=j70C7y0KPnY

there has to be a tiny movement to help in the impact touchdown ,it they were completely attach the would broke or damage soon or latter
were talking about 30 tons airplane , the b777 has it , the b747 has it (confirmed) why this plane with the size almost like a 747 wouldn't ..

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 10:49 am
by Hagar
there has to be a tiny movement to help in the impact touchdown ,it they were completely attach the would broke or damage soon or latter
were talking about 30 tons airplane , the b777 has it , the b747 has it (confirmed) why this plane with the size almost like a 747 wouldn't ..

The 707 was a first generation jet airliner. It was one of the first aircraft of that size (if not the first) with 4-wheel bogies on the main legs. The Comet 1 prototype had single-wheel main gear legs.

PS. I imagine the bogie units are pivoted in a similar way as those fitted to later airliners. They're just not set at such an acute angle when off the ground. This would affect how they retract into the wheel bays.

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 11:45 am
by EGNX
It looks as if the wheels are fixed parallel to the fuselage. It just seems to be an illusion that they incline simply because when the aircraft lands it flares and alters the angle of the aircraft and the wheels to the ground. So it will tend to touch down on the back pair of wheels and then the front pair, just like a set of 'dangling' gears would do.  :)

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 11:52 am
by Sean_TK
I looks to me from that last video that while airborne, the bogies are parallel to the fuselage, but are able to tilt a few degrees upon impact with the surface before becoming parallel again. (Kind of like they are conforming to the surface angle.)

EDIT: Perhaps a clearer explanation of my perception:

While in the air, Alrot, the plane's gear looks like the last picture you posted in your original post...flat with the fuselage.
When in contact with the ground and still nose-high from the flare, the gear can look like the second-to-last picture you posted (front wheels lower than rear wheels). Just watch that last video real closely...flush with the plane in the air, flush with the ground when in contact with the ground.

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 12:21 pm
by Alejandro Rhodes
It has to be a movement otherwise 2 or 4 back tires Wouldn't support so much pressure at the impact , in a second not only the weight also the impact of the touchdown

only 4 tires would have to support the entire aircraft in 2 seconds  :o,that can not be , Beyond what the video looks is for my logic this has to be a part of the wheel suspention.. :-/

Of course I still confuse ,Doug has sense in what he saids and so Sean and EGNX..  

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 12:38 pm
by expat
Hi Alex

An email to these people;

http://www.amccb707.com/LandingGear.htm

may be able to help. They specialise in 707 main gear. Tell them what the problem is and why you need the information, they will probably have the answers you are looking for. There is bound to be someone who knows what the sweep back angle, without even looking in the books.

Matt

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 12:45 pm
by Hagar
It's obviously pivoted. What you need is a good close-up photo or drawing of that bogie unit. This is the best one I can find right now. http://www.airliners.net/photo/Avistar/Boeing-707-328C/0636756/L/

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 2:49 pm
by C
It's obviously pivoted. What you need is a good close-up photo or drawing of that bogie unit. This is the best one I can find right now. http://www.airliners.net/photo/Avistar/Boeing-707-328C/0636756/L/


As are all double and triple bogie units I suspect.

For a quick comparison, take a look at the VC10, which is markedly trailed/angled when the aircraft's weight is no longer supported:

http://images.unbrokenphotography.co.uk/Brize%20Norton%20-%2007.05.08/VC10_BZZ.jpg

http://www.airliners.net/photo/UK---Air/Vickers-VC-10-K3/1321690/M/

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 2:59 pm
by todayshorse
Some pics here of 707's in various configs, scroll down a bit theres a few taking off, retracting gear and so on:-

http://www.air-and-space.com/Boeing%20Vintage%20Jetliners.htm

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 3:06 pm
by Hagar
Some pics here of 707's in various configs, scroll down a bit theres a few taking off, retracting gear and so on:-

http://www.air-and-space.com/Boeing%20Vintage%20Jetliners.htm

Hmmm. Your link doesn't work for me.

Re: I need a Boeing Mechanical Please

PostPosted: Wed May 28, 2008 4:54 pm
by Mictheslik
Some pics here of 707's in various configs, scroll down a bit theres a few taking off, retracting gear and so on:-

http://www.air-and-space.com/Boeing%20Vintage%20Jetliners.htm

Hmmm. Your link doesn't work for me.


working here......that's an awful lot of 707s!

.mic