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Old Jun 30, 2011, 06:24 AM
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Bogota Colombia
Joined Mar 2006
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Build Log
B767

I'm in the design phase of a B767-200F (Freighter) Wich is the one that I actually fly.
It's going to be 61" span and Wemotec minifan powered.
It will have Custom made retracts and RDS (rotary drive system) for the ailerons.
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Last edited by cetorca; Jun 30, 2011 at 02:27 PM.
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Old Jun 30, 2011, 06:46 AM
Registered User
Bogota Colombia
Joined Mar 2006
199 Posts
Edf

To keep the exhaust cone scale, I split the exit cone in two. One cone inside the other. The sum of both are 80% FSA
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Old Jun 30, 2011, 07:01 AM
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flyhawk's Avatar
Hlohovec, Slovakia
Joined Jan 2007
276 Posts
Nice work Keep posted this lovely plane. Im very curious.
What kind of building material you want to use?

Frankie
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Old Jun 30, 2011, 08:37 AM
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Bogota Colombia
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Originally Posted by flyhawk View Post
Nice work Keep posted this lovely plane. Im very curious.
What kind of building material you want to use?

Frankie
It's going to be fiberglass covered balsa with carbon fiber reinforcement.
Wings CNC foam cutted.
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Old Jun 30, 2011, 08:46 AM
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Bogota Colombia
Joined Mar 2006
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This is how the fan flow is splitted to mantain the exhast cone scale.
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Old Jun 30, 2011, 08:50 AM
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Bogota Colombia
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Change to build log

How do I change this thread from discussion to build Log?
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Old Jun 30, 2011, 12:34 PM
PH.D in Scratchbuilding
Denmark, Region Zealand, Holbaek
Joined Sep 2005
325 Posts
Edit post#1 and go advanced.... then you can change the prefix.

Your projekt looks really interesting.... I'll be watching.
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Old Jun 30, 2011, 12:43 PM
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St.Catharines, Ontario
Joined Jan 2009
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the only thing I would worry about, is if that inner cone bottle necks the airflow and stalls the fan out. this is the problem when doing an airliner, because usually, something's got to give from a true scale outline. this is especially true of engines and their associated nacelles, pods, etc. this is why I choose RR powered airliners, because they are easier to give a scale look to them. LOL.
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Old Jun 30, 2011, 02:26 PM
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Bogota Colombia
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Originally Posted by LuvEvolution7 View Post
the only thing I would worry about, is if that inner cone bottle necks the airflow and stalls the fan out. this is the problem when doing an airliner, because usually, something's got to give from a true scale outline. this is especially true of engines and their associated nacelles, pods, etc. this is why I choose RR powered airliners, because they are easier to give a scale look to them. LOL.
Luv, What I have tough to solve that is to shape the motor heat sink as a cone that allows to enter the exact mass air for the cone area, the remaining air mass will flow through the outer exhaust cone as shown.
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Old Jun 30, 2011, 02:27 PM
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Bogota Colombia
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Originally Posted by jweber009 View Post
Edit post#1 and go advanced.... then you can change the prefix.

Your projekt looks really interesting.... I'll be watching.
Thanks.
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Old Jun 30, 2011, 02:56 PM
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Bogota Colombia
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This is how it looks. There is the outer area which is the difference between the FSA and the Inner cone oulet area.
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Old Jun 30, 2011, 04:01 PM
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wora's Avatar
Croatia
Joined Jan 2011
37 Posts
quite nice, what would happen if you use mesh for doing this cone?

I thinking to make my inlet cones scale looking from mesh.

ps. what program you use for design?
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Old Jun 30, 2011, 04:24 PM
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St.Catharines, Ontario
Joined Jan 2009
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I think your cone idea should be ok for an airliner application. you aren't going to need all kinds of power to fly and efflux shouldn't be an issue either. if it were a speed design, that cone would cause you all kinds of problems I think. here, it should be fine. the only way you'll know for sure is when it flies, because you'll hear the fan stalling, if it does indeed cause it to.
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Old Jun 30, 2011, 06:51 PM
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Bogota Colombia
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Originally Posted by wora View Post
quite nice, what would happen if you use mesh for doing this cone?

I thinking to make my inlet cones scale looking from mesh.

ps. what program you use for design?
Wora, I'm not sure what you mean, could you explain it please?
The program is Rhino 4.0
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Old Jun 30, 2011, 06:52 PM
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Bogota Colombia
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Originally Posted by LuvEvolution7 View Post
I think your cone idea should be ok for an airliner application. you aren't going to need all kinds of power to fly and efflux shouldn't be an issue either. if it were a speed design, that cone would cause you all kinds of problems I think. here, it should be fine. the only way you'll know for sure is when it flies, because you'll hear the fan stalling, if it does indeed cause it to.
Luv, that's what I though. I dont expect it to be stalled but only tests will tell.
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