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« on: May 12, 2011, 11:40:09 PM »
ashJR7202
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HI guys,

For long I was thinking of making WING  Head Scratching Head Scratching. But after seeing Ujjwana’s and Amar’s wing I get motivated to make one!!!!!  Roll Eyes Roll Eyes

So here is my 1st wing build pictures  Thumbs Up!!!! It took little longer than expected….. since in original design motor and ESC are open, I decided to make small canopy, so that everything will be inside and will give little different look!!! Drool

Aerofoils is KF4, main wing, canopy  out of 5mm biofoam used 8 mm for KF4 aerofoil!!!!

It took sometime to make template and make canopy and overall structure….made simple wing little complicated  Bang Head Bang Head

Also colored underneath with orange and black….top side will be red and yellow fire. Like shown in last pic, currently half painted with yellow!!!! After doing paint job I decided to cut red fire in radium….
Coloring took lots of efforts than expected…..

I have 3 motors with me CF2805, 2800kv, will try to maiden using this motor on 2s lipo. Then I am planning to use 2627, 3800kv motor with 4” prop and 3s and 2208, 1800kv motor with 6” prop and 3s lipo.

Lets see how things work out…. If everything is pretty smooth then will upgrade to 2218, 2500kv heli motor for more speed!!!!!!

AshishX6_180.jpg
Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #1 on: May 12, 2011, 11:41:38 PM »
ashJR7202
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some more pics with Canopy in shape

AshishX6_189.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #2 on: May 12, 2011, 11:43:16 PM »
ashJR7202
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some more

AshishX6_218.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #3 on: May 12, 2011, 11:46:32 PM »
ashJR7202
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here is some paint job!!!

used Bossony Epoxy color spray cans, beware to spray from ar least 12" from surface, other wise it will eat the foam!!!!!!

at some places it was too concentrated and had little damage to foam but not much significant!!!

AshishX6_223.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #4 on: May 12, 2011, 11:48:20 PM »
ashJR7202
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Final color scheme from top is shown below

wing-1a.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #5 on: May 12, 2011, 11:54:09 PM »
VC
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AWESOME!  Clap

Very neat build and great colour scheme. When does she maiden?
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« Reply #6 on: May 12, 2011, 11:56:13 PM »
ashJR7202
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AWESOME!  Clap

Very neat build and great colour scheme. When does she maiden?

thanks VC sir!!!!

was planning to maiden it last weekend, but couldnt!!!
even coming weekend i will not get chance to fly anything. lets hope will be able to maiden it next weekend!!!
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« Reply #7 on: May 13, 2011, 12:00:54 AM »
Samanth
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 Clap  Beautiful. !!  
Please post videos of your maiden flight. I am looking forward to it Smiley

I must say, you have now inspired me to build a profile version of the F-117 Nighthawk   Tongue

I have always wanted to build a model which I can fly over my terrace...

Thank you ! and great effort you put on your Flying Wing  Thumbs Up
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« Reply #8 on: May 13, 2011, 01:06:03 AM »
warriornair
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really awsome,
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« Reply #9 on: May 13, 2011, 01:23:55 PM »
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This should be one hell of a Boomer!!!

Superb build!!!!
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« Reply #10 on: July 11, 2011, 12:14:04 PM »
ashJR7202
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finally got some time to upload maiden video for this one!!!

maiden was done in Jun, it took off well but after few seconds it dive down and crashed  Bang Head  Bang Head

i think, since there were no vertical stabilizer, it was little unstable and i could no handle it. i should have gained some height, but anyways, it is repairable but will take sometime. main wing is still intact, damage is only to the canopy section...

video was taken by Saurabh and launched by Sandeep!!!!!

enjoy!!!

 
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« Reply #11 on: July 11, 2011, 09:45:57 PM »
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If you were not planning to put vertical stabilizers the inherent property of the airfoil should provide the stabilization. The airfoil should be specifically selected for flying wing. It is very difficult to do that though. A true flyingwing will not have vertical stabilizers, but people have fun with winglets.
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« Reply #12 on: July 11, 2011, 10:29:51 PM »
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Kfm-4 is specifically for flying wings and tailless airplanes, as its symmetrical, may be you should give some washout to stabilize it more??
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« Reply #13 on: July 12, 2011, 11:12:43 AM »
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No thats not  a general rule, kmf4  may be symmetrical, but its not specific airfoil for tailless flying wing.
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« Reply #14 on: July 12, 2011, 12:56:52 PM »
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+1

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« Reply #15 on: July 12, 2011, 02:43:12 PM »
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Nice Ash... The maiden atarted all well, but more than lack of winglets(which I would recommend anyway), it more looks like a servo failure or you going into full rates accidentally, or even a sudden CG change (motor/lipo coming off) . Flying wings are very sensitive to CG and control surface and you should put way less throws. a D/R of 20-35% is usually enough on Ailerons and 40% on Elevators.

This should have come first, but I liked you build very much. The fuse, launch tab and the trim scheme (Yellow and white !), if not putting a build thread, could you please send few pics of the plane?
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« Reply #16 on: August 18, 2011, 09:29:32 PM »
ashJR7202
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Hi Guys!!!


After having crashed my Wing while trying to maiden, i was able to build the nose so that i can again go ahead enjoy it....

once confident will paint it fully to make it more beautiful.....

here are few pictures after it crashed... fortunately only nose was damaged.... and main wing was intact... but it was totally crushed...

P1000336.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #17 on: August 18, 2011, 09:44:21 PM »
ashJR7202
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it was crashed last month...

in weekends and after office hr i steal some hrs and slowly started rebuilding its nose...

initially i decided what part of crushed biofoam can be used...then cut it down in straight line so that additional biofoam can be attached to it.

as u can see nose, canopy and launch tab was crushed...
so 1st i started with launch tab, cut out unnecessary part in straight line and stick rest back to wing using Evotite. then added additional biofoam,to complete the shape...

once this is done.. i get support for canopy..
so now time to rebuilt canopy....

taking pieces of biofoam and making fix and match, i finally able to cut it as i wanted...once everything is as per i wanted i used evotite and stick it togather....and results are pretty satisfactory...

pls see the pictures below

AshishX6_254.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #18 on: August 18, 2011, 09:45:23 PM »
ashJR7202
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inside canopy

AshishX6_264.jpg
Re: Scratch Built: one more 36" Flying wing from BioFoam,
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« Reply #19 on: August 18, 2011, 09:50:33 PM »
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Nice recovery Clap
what was the reason of the crash? looked like servo failure on the right elevon.
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« Reply #20 on: October 07, 2011, 11:47:28 AM »
ashJR7202
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after seeing the behavior, as ujjwaana and sunlike suggested, even I initially thought of the servo failure or may be some technical issue…… but servo is still working fine..may be infamous DSM2 glitch…

finally I put detachable winglets and as suggested by Ujjwaana reduce the throws and what a wonder it flew like dream…..gentle and pretty stable...thanks guys....

here are some videos of my wing……
Launched by: Saurabh
Camera: Anand!!!!!
and commentary: again Saurabh!!!  Giggle Giggle




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« Reply #21 on: October 07, 2011, 12:07:02 PM »
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Flew Like a Charm Beautiful Ash. Fantastic  Clap Clap
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« Reply #22 on: October 07, 2011, 12:12:34 PM »
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Looking very stable now Clap
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« Reply #23 on: October 08, 2011, 07:22:00 AM »
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Fantastic Sir!!! Smiley
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« Reply #24 on: October 08, 2011, 09:25:58 AM »
VC
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Congrats! Pl post some more detailed pictures. It will help us. Thumbs Up
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