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Anyone ever pushed the size envelope ? (Read 244 times)

Aug 30^th, 2004 at 11:05am

Brett_Henderson Ex Member
EVERY OUTER MARKER SHOULD
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I'm building and testing a concept plane.. mostly 'cause I just wanted to "feel" something that large in "virtual flight".. AND try to land it Wink

Best description is: About 2.5 times the overall size of a 747 (pic attached).

Problem is.. no matter how carefully and logically I try to design the .air and aircraft.cfg files.. (and I've made dozens work well from scratch).. the darn thing doesn't even behave like a plane Angry

Right now.. just to see it fly, I've adopted the 747 files with adjusted contact points (and huge MOIs)..

Anyone else have any success building ridiculously large flying machines and getting them to fly with accurate .air/.cfg files ? I'll take ANY advice.. thanks..

Brett...

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Reply #1 - Aug 30^th, 2004 at 11:38am

Felix/FFDS Offline
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You're not that far off the mark.

One of Boeing's paper studies has been for a large volume cargo carrier - similar in size to what you're proposing.

The main body cross section is squarish, with high mounted wings, apporximately 8 prop-fans for power.

For heavy loads it's proposed to use a semi-ground effects to travel 250 feet above sea level, with a max operational ceiling of about 10000ft. (Note that at this height, you wouldn't need pressurized cockpits/hold)

Felix/FFDS

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Reply #2 - Aug 30^th, 2004 at 4:11pm

garymbuska Offline
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Jacksonville, Florida

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If I ever need to move my hanger I know where to go to now Grin

I am curoius are the landing gear that small or the plane that big. Will it land without bottoming out what are some of the weights you are using and wher is the center of gravity at is it nose or tail heavy empty.
And no rudder I guess you are thinking along the bonaza line. You do not see many planes with a V shaped tail. This might give you control problems

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Reply #3 - Aug 31^st, 2004 at 7:12am

Brett_Henderson Ex Member
EVERY OUTER MARKER SHOULD
BE AN NDB

Gender:

Quote:

You're not that far off the mark.

Yeah.. the Boeing Pelican kinda gave me the idea.

Modeling something that large isn't tricky.. In fact it's a bit easier.. If for no other reason, the margins for error are greater. I just wanted to maneuver and land something HUGE.

It's the limitations (size-wise) of MS's flight-model that are giving me fits. I think.. there were some corners cut, "forcing" the algorithms to resemble something in flight, that rear their heads when you push certain parameters.

I'll find some, workable compromise Wink

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Reply #4 - Aug 31^st, 2004 at 12:50pm

garymbuska Offline
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I would rather be flying
Jacksonville, Florida

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Posts: 2850

I think you will need a extra call sign instead of heavy maybe heavy and large. Grin

Have you tried some of the ANTOV 225 settings this is a very large aircraft this might give you an idea as where to begin. 8)

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Reply #5 - Oct 13^th, 2004 at 1:19pm

flitezimz Ex Member

I designed the Antonov 334 at Flitezimz.com . It is 300feet of wingspan and took a LOT of editting to make it work right. Flight shop had a limit of 400 feet max. I am not sure what the limit is for the 21rst century sims.

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