Oct 05, 2009, 07:52 PM
Teach a friend to slope!
Aerogance's Avatar
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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Oct 06, 2009, 06:59 AM
Registered User
Good to see it on the road again.

John
Oct 09, 2009, 01:08 AM
Teach a friend to slope!
Aerogance's Avatar

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:
Oct 10, 2009, 12:42 AM
Teach a friend to slope!
Aerogance's Avatar

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:
Oct 10, 2009, 09:45 AM
Objects in mirror are losing
1000MPH's Avatar
Nice. What's the story? Did you make that PS from plans?
Oct 11, 2009, 07:00 PM
Teach a friend to slope!
Aerogance's Avatar
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.
Oct 11, 2009, 07:07 PM
Teach a friend to slope!
Aerogance's Avatar

There will be cores


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

John
Apr 20, 2010, 11:35 PM
Teach a friend to slope!
Aerogance's Avatar

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.
Apr 21, 2010, 12:55 AM
The sky is my playground
flyboyjimi's Avatar
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
Apr 21, 2010, 03:46 AM
Registered User
Great - good to see the idea lives. Fun is what is should always be about.
John
Apr 22, 2010, 12:45 AM
Teach a friend to slope!
Aerogance's Avatar

Workbench and plans


Here is a picture of my new workbench and complete plans for anyone in need:
Last edited by Aerogance; Apr 22, 2010 at 12:57 AM.
Apr 22, 2010, 08:09 PM
Teach a friend to slope!
Aerogance's Avatar

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:
Apr 29, 2010, 12:25 AM
Teach a friend to slope!
Aerogance's Avatar

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:
Apr 29, 2010, 10:27 AM
the occasional flyer
rothlisburger's Avatar
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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