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Old Oct 05, 2009, 07:52 PM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Oh wow! I came home from work and found a huge pile of blue foam in my garage! Is it Christmas already?

Now that the weather is cooled, I can start using resin again...Time to cut some cores!
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Old Oct 06, 2009, 06:59 AM
Registered User
Sydney
Joined Apr 2009
716 Posts
Good to see it on the road again.

John
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Old Oct 09, 2009, 01:08 AM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Building with power

I have 3 power supplies for my wire, but I am building a new one that I hope will be more reliable and capable. Should have it completed tomorrow night:
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Old Oct 10, 2009, 12:42 AM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Success

Finished the new power supply and tested it tonight. What a difference from my other power supplies. Did some test cuts in some blue foam (Mini cores). Getting close to cutting the first GB cores. Here is the completed power supply:
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Old Oct 10, 2009, 09:45 AM
Objects in mirror are losing
1000MPH's Avatar
USA, NV, Reno
Joined May 2003
3,577 Posts
Nice. What's the story? Did you make that PS from plans?
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Old Oct 11, 2009, 07:00 PM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Quote:
Originally Posted by 1000MPH
Nice. What's the story? Did you make that PS from plans?
Yeah, from online plans. Finally went ahead and put one together.
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Old Oct 11, 2009, 07:07 PM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
There will be cores

Finished my new foam cutting pulley and bow. Here is the first test core (Mini core):
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Old Oct 12, 2009, 05:15 PM
Registered User
Sydney
Joined Apr 2009
716 Posts
Thanks for the link - your Foam Cutter and Auto cutter works well.

John
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Old Apr 20, 2010, 11:35 PM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Back on track

I finally got the boat out of my garage and built a killer dead flat and level work bench (only $50 in material - woot).

I have started making wing templates. I have chosen the naca 64-214 section for the first prototype (14% section). This is one of the most commonly used sections for military, civilian and commercial aircraft. Variations of this airfoil have flown over Mach 2, and are most often flown in higher subsonic speed range which is where we hope to be with DS one day. I chose 14% because from what I can tell this will be the thickest section used to date for a DS specific ship (Joe is 12.5% if I recall correctly). The thicker section would easily allow for full size servos and enormous wing ballast. Also, the thicker airfoil and heavier wing loading concept has been proven with Joe's D80.

The plan continually evolves, but I plan to build a mid-weight prototype and start the scientific process. If the economy would ever bounce back, I plan to have the fuselage RP'd as well as a few horizontal stabs.

Initial wings will be manually cut foam and bagged until it is clear that a winning combination has be found. Then I will escalate to more expensive technology as funds allow.

The primary intentions of this project have not changed: long tail moment planform, large vertical stabilizer, different airfoil selection than currently used, cavernous wing displacement, distinguished profile.

So far, this has been a fun project and I have no reason to stress out over getting it done in a quick fashion. I hope to have something flying this year, but next year is okay too. I will update when anything noteworthy happens.
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Old Apr 21, 2010, 12:55 AM
The sky is my playground
flyboyjimi's Avatar
Near the Ocean in Hunt. Beach Calif.
Joined Apr 2006
999 Posts
I'm watching your thread Aaron, sounds like you got a mission and it sounds great. Will be tuned in to see how you progress. Good luck to you. Jimmi
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Old Apr 21, 2010, 03:46 AM
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Sydney
Joined Apr 2009
716 Posts
Great - good to see the idea lives. Fun is what is should always be about.
John
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Old Apr 22, 2010, 12:45 AM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Workbench and plans

Here is a picture of my new workbench and complete plans for anyone in need:
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Last edited by Aerogance; Apr 22, 2010 at 12:57 AM.
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Old Apr 22, 2010, 08:09 PM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Templates

I changed foils to an alternate I had in mind based on some test data. Here is a picture of a template I completed:
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Old Apr 29, 2010, 12:25 AM
JWs are Shear Fun!
Aerogance's Avatar
USA
Joined Sep 2008
2,675 Posts
Preliminary Test Cores

I made a test core from some scrap foam tonight. The nasa hsnlf(1)-0213 foil is very thick aft of the centerline so it will be easy to have a wide spar and fit a full size servo within the wing. It actually looks possible to completely internalize a robust linkage. I have more work to do on jigs/fixtures/templates before cutting any expensive foam. Here are a couple of photos of the (crude) test core:
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Old Apr 29, 2010, 10:27 AM
the occasional flyer
rothlisburger's Avatar
Rexburg, ID
Joined Jul 2008
516 Posts
As long as you're looking at laminar airfoils, maybe you should use the P-51D tip airfoil, just for the cool of it.

-David
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