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Old Jan 26, 2008, 05:19 PM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
Build Log
Nozzle with declined vector pulling on EDF

Nozzle with declined vector pulling on EDF (on Mig-29 )

Weight sniffled - 12 gramms (while)
Corner of the tumbling - 25 degrees (i.e. in both sides - 50 degrees)
Elements management until they are installed.

EDF: http://aviamodelka.ru/forum/index.ph...ndpost&p=16698.

- diameter to pipe external: 79.9 mms
- diameter external: 84 mms
- diameter of the pipe internal: 76.7 mms
- diameter of the internal bushing: 30.7 mms

And else some data...

- weight of the installation: 111 gramms
- diameter of the motor: 30.6 mms
- length wire from motor: 80 mms
- pulling (3S1P) - 808 gramms
- maximum current: 35,2
- speed of the flow - 36 m/sec

Shall try pulling on battery 4S1P.
Think that pulling will be greater ~ 1100 gramms.

Rest details here http://aviamodelka.ru/forum/index.php?showtopic=1669 .
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Last edited by Valentin; Jul 09, 2008 at 04:34 PM.
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Old Jan 26, 2008, 08:31 PM
Electric Coolhunter
Thomas B's Avatar
United States, TX, Fort Worth
Joined Jun 2000
14,487 Posts
Not a bad idea...you need an lightweight extra inner liner that reaches jsut past the ball joint area to keep the area of the thrust tube as near the exact constant taper as possible. The sudden cross section area increase and decrease as the eflux passes the duct ball joint is not a good idea.
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Old Jan 26, 2008, 08:53 PM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
Experience will show.

Interesting that is got.
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Old Jan 26, 2008, 08:56 PM
It wasn't me...
DanSavage's Avatar
Trabuco Canyon, CA
Joined Nov 2000
4,559 Posts
This is a very good idea. It is very nicely built. Thanks for sharing.

I'm very impressed with your craftsmanship.

Dan
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Last edited by DanSavage; Jan 26, 2008 at 09:02 PM.
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Old Jan 26, 2008, 09:52 PM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
Thank you for estimation DanSavage.

Beside you skill on high level too.
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Old Jan 27, 2008, 02:49 AM
smug in granny panties
monkamarm2000's Avatar
NorCal Silicon Valley
Joined Aug 2002
11,778 Posts
yeah valentin and some of the other guys on his site are very smart and extremely resourceful, they can do magic with a bit of heat and some petg. very neat stuff as always valentin.

Barry
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Old Jan 27, 2008, 03:55 AM
My project: FAIREY DELTA 1
Erik v. Schaik's Avatar
Uden Volkel, Netherlands
Joined Dec 2003
4,974 Posts
I think the airflow can be very disturbed in the thrusttube and an amazing ow efficiency can be achieved . How about vectoring the complete fan?

Good luck!

Erik
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Old Jan 27, 2008, 04:04 AM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
Yes, you it is correct have said: 2 PET bottles (1,5L), industrial hair dryer + little skills .

And all ready.

No nothing complex.

Any can repeat at desire.

Temperature given air - 270 degrees on Celsius.
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Old Jan 27, 2008, 04:11 AM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
Small explaining drawing.

To answer some your questions (about air clearance).
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Old Jan 27, 2008, 08:27 AM
2014 EDF JET JAM We be Jamming
Kevin Cox's Avatar
St. Louis Intl, Missouri, United States
Joined Jan 1997
6,757 Posts
Very clever Val.

I like it!
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Old Jan 27, 2008, 02:04 PM
It wasn't me...
DanSavage's Avatar
Trabuco Canyon, CA
Joined Nov 2000
4,559 Posts
Thanks, Val.

Are you planning to sell these? Or, did you develop this for your own models?

Do you already have a model to put these into?
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Old Jan 27, 2008, 02:27 PM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
Previously than something speak, conduct test 3-h design.

If one will be ingenious - shall make to order.
For checking the work device will are installed on model S-56 - http://aviamodelka.ru/forum/index.php?showtopic=2256

First two variants can not show - are not made completely (is broken milling tool - repair).
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Old Jan 27, 2008, 05:34 PM
It wasn't me...
DanSavage's Avatar
Trabuco Canyon, CA
Joined Nov 2000
4,559 Posts
Yes, I remember the first drawing.

I think that variant 3 is the best for models. It is simple and reliable. Variant 1 looks like the real nozzle, but I think it would be too delicate and easy to break.

I like the work you and Sly Tom Cat are doing on the S-56. It will be a very nice model.
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Last edited by DanSavage; Jan 28, 2008 at 12:40 AM.
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Old Jan 27, 2008, 10:43 PM
Registered User
USA, UT, Provo
Joined Apr 2003
909 Posts
im signing on here to watch. this has been of great interest to me for some time and iv thought about trying to do something along this line but hadnt gotten to it. really like the idea though.
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Old Jan 28, 2008, 06:45 AM
Impish handles
Valentin's Avatar
Russia, Voronezhskay area
Joined Dec 2003
395 Posts
All faithfully - most idle time decision - 3 variants.
But difficulties in selecting the bottle PET - since connect the detail together much it is difficult.
Possible easy rumple them when joining.

The Joint, apropos, is oiled by special machine lubrificant for mechanism, running on big load.
Displacement has made drunk much lung, necessities effort ~ 5 grams.

P.S. My apologies if I some terms and determinations write wrong - little practical persons of english.
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