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Old Jun 30, 2011, 07:24 AM
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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.
Last edited by cetorca; Jun 30, 2011 at 03:27 PM.
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Old Jun 30, 2011, 07:46 AM
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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
Old Jun 30, 2011, 08:01 AM
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Nice work Keep posted this lovely plane. Im very curious.
What kind of building material you want to use?

Frankie
Old Jun 30, 2011, 09:37 AM
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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.
Old Jun 30, 2011, 09:46 AM
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This is how the fan flow is splitted to mantain the exhast cone scale.
Old Jun 30, 2011, 09:50 AM
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Change to build log


How do I change this thread from discussion to build Log?
Old Jun 30, 2011, 01:34 PM
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PH.D in Scratchbuilding
Edit post#1 and go advanced.... then you can change the prefix.

Your projekt looks really interesting.... I'll be watching.
Old Jun 30, 2011, 01:43 PM
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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.
Old Jun 30, 2011, 03:26 PM
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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.
Old Jun 30, 2011, 03:27 PM
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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.
Old Jun 30, 2011, 03:56 PM
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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.
Old Jun 30, 2011, 05:01 PM
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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?
Old Jun 30, 2011, 05:24 PM
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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.
Old Jun 30, 2011, 07:51 PM
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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
Old Jun 30, 2011, 07:52 PM
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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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