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#1 Dmerino Aug 01, 2012 01:32 AM

F3d skynight build
 
5 Attachment(s)
After talking with Corsair nut I've decided to start a Quick Build Skynight. I'm going to try and have it ready for Vegas. I've just about finished the A-4 "Scooter" and have been toying with either an F-100 Hun or the Skynight. Nut convinced me to do the F3D. Thanks, Nut.

I got a good start on the bird. However, I may have to do the entire layout by hand. I'm having some problems scaling this thing up. I've got the nose pretty much done.

I really like the "Marine" gray scheme.

Den









#2 corsair nut Aug 01, 2012 08:43 AM

sweet! this will be the first skynight model ive ever seen fly! given the wing and tail, should make a really nice flying model! :)

#3 Dmerino Aug 01, 2012 01:08 PM

It should fly like a park flier, although I'm putting a 2200kv Hobby City motor with a high speed prop and 4 lipo pack battery. It should fly pretty good, but I'm wondering about those straight wings slowing it down.

I hope I get it finished, Nut.

Den



Quote:

Originally Posted by corsair nut (Post 22324767)
sweet! this will be the first skynight model ive ever seen fly! given the wing and tail, should make a really nice flying model! :)


#4 Rasterize Aug 01, 2012 02:12 PM

Cool! Should turn out great as your build do! Still, I like your WW2 birds the best. ;)

#5 corsair nut Aug 01, 2012 02:51 PM

nah, those straight wings are whats going to make it fly so nice!!! lots of lift, light wing laoding. should be awesome!

all that talk about FJ-1's has me wanting to scratch build one.hmm....about 85" i recon....5" fan. man, that would be cool. if you designed one at about 35-36" wingspan, it would be perfect for the affordable 50mm j power edf setup. if got a few, and you could have one for the project. they put out great power on 4s 1000



Quote:

Originally Posted by Dmerino (Post 22327017)
It should fly like a park flier, although I'm putting a 2200kv Hobby City motor with a high speed prop and 4 lipo pack battery. It should fly pretty good, but I'm wondering about those straight wings slowing it down.

I hope I get it finished, Nut.

Den


#6 Dmerino Aug 02, 2012 03:23 PM

Hey, Rasterize,

If you ever want to give this type of a build a shot I will give you the Corel e files and you can get them scaled up or down without problem and have them printed at Kinkos. This goes for anyone else that would like to give this type of build a shot. I would be more than happy to give you instructions on the Hurricane and A-4. I don't have them on the others, but these instructions are not rocket science and anyone can extrapolate them into another design. If you have any problems I would be happy to help.


Den

Quote:

Originally Posted by Rasterize (Post 22327597)
Cool! Should turn out great as your build do! Still, I like your WW2 birds the best. ;)


#7 Dmerino Aug 02, 2012 03:27 PM

Hi Nut,

How about after Vegas and the F3D, I design a FJ-1 that can be scaled up or down to any size? You can get the file printed at Kinkos from the e file I will send you. We can work together these, you on the 85" version while I work on the 36" version. We could work it step by step.

Any interest?


Den

Quote:

Originally Posted by corsair nut (Post 22327951)
nah, those straight wings are whats going to make it fly so nice!!! lots of lift, light wing laoding. should be awesome!

all that talk about FJ-1's has me wanting to scratch build one.hmm....about 85" i recon....5" fan. man, that would be cool. if you designed one at about 35-36" wingspan, it would be perfect for the affordable 50mm j power edf setup. if got a few, and you could have one for the project. they put out great power on 4s 1000


#8 corsair nut Aug 02, 2012 03:58 PM

well, i just need a 3 view. ill probably build as box with foam in corners and shape it out. though rolling one from depron would be cool and super light, i think maybe it would work well in FFF then glass, but i can get ahold of fff. depron is too hard to roll in 6mm, i might be able to do it in 3mm, but i think i prefer the box and shape method. if got a couple huge sheets of 1" blue foam.

after vegas sounds good, i ineed to concentrate on the T-38 right now....

#9 Dmerino Aug 02, 2012 07:54 PM

Sounds good, Nut. One of these days I'm going to get you to try one of these. The fuse, vert. stab, etc. are 1mm foam laminated with printed paper on the outside. Not too bad to roll form and is strong as an ox when done. I glassed some stress points on the inside of the Oscar and a lot of the A-4. The Scooter took a header, when we forgot to save the aileron reverse on the trans. She would be about 3" long now if I didn't glass the inside.

Anyway we can talk more in Vegas.

Take care.

Den

Quote:

Originally Posted by corsair nut (Post 22338487)
well, i just need a 3 view. ill probably build as box with foam in corners and shape it out. though rolling one from depron would be cool and super light, i think maybe it would work well in FFF then glass, but i can get ahold of fff. depron is too hard to roll in 6mm, i might be able to do it in 3mm, but i think i prefer the box and shape method. if got a couple huge sheets of 1" blue foam.

after vegas sounds good, i ineed to concentrate on the T-38 right now....


#10 Dmerino Aug 06, 2012 12:01 AM

2 Attachment(s)
Making some progress in the design and layout thanks to Rasterize. He inspired me to explore Corel draw in order to manipulate Vector files. Also, I want to thank Christoph Stahl who designed the original Skynight paper model. Thanks to both of these guys I've saved weeks of computer design. I'm feeling a little more confident about getting it done for Vegas.

Dennis

#11 Dmerino Aug 06, 2012 06:17 PM

4 Attachment(s)
Here are some photos of the revised nose for the Skyhawk. This is a proof-of-concept paper model. You can see the glue separating from one of the parts, but this will work on the model. This is actual size.

Dennis

#12 p901P901 Aug 07, 2012 12:38 AM

90mm resized
 
5 Attachment(s)
It looks like at 72" wingspan twin Midi's will fit. Intakes are under 4" (12.5 sq in), and FSA on a 90 is 8sq in.
Looks like xplane has this. This can be converted into dxf file and sliced to make formers.

#13 Dmerino Aug 07, 2012 03:53 PM

Interesting design for the EDF's. I was thinking about trying one in this, but I'm not experienced with fans and am a little intimidated.

Some day.....

Peace,
Dennis

Quote:

Originally Posted by p901P901 (Post 22377549)
It looks like at 72" wingspan twin Midi's will fit. Intakes are under 4" (12.5 sq in), and FSA on a 90 is 8sq in.


#14 p901P901 Aug 09, 2012 02:56 PM

Formers for 72" WS
 
11 Attachment(s)
Sliced the Xplane image into 4" section (nose is 5").
Compared Xplane model to 3 view. The one top compare 1, side compare 1 and front compare 1. 3 view is from here http://www.aviastar.org/pictures/usa..._skyknight.gif. Looks like the author of the xplane model used this 3 view.

Templates are naca 2415 inboard and naca 2410 outboard. There is 2 degree washout and 3.5 degree dihedral. Wing CG is 25% Mac.

#15 Dmerino Aug 09, 2012 11:11 PM

3 Attachment(s)
I enjoy the computer graphics. I've completed my graphics and layout of the skins and formers for the Skynight. I used the same reference drawings as the Xplane development. I would like to see another Skynight out there somewhere.

Here are some of my drawings for the Skynight. Anyone is free to use these to there hearts content.

I've printed out all of the parts and will start construction on the fuse. tomorrow.

Peace,
Den





Quote:

Originally Posted by p901P901 (Post 22401891)
Sliced the Xplane image into 4" section (nose is 5").
Compared Xplane model to 3 view. The one top compare 1, side compare 1 and front compare 1. 3 view is from here http://www.aviastar.org/pictures/usa..._skyknight.gif. Looks like the author of the xplane model used this 3 view.

Templates are naca 2415 inboard and naca 2410 outboard. There is 2 degree washout and 3.5 degree dihedral. Wing CG is 25% Mac.



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