Sort of a Solar Sailer???

gdjsky01

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Many of you know of Chris Michielssen and his model rocketry building blog. Just a wonderful resource. And he is a master builder. Well his Solar Sailer II build got me thinking upscale.

Now I know that is NOT a unique idea. I get it. Coker did it as others have as well. And an upscale from a .97 to 2.6 is a LONG rocket. So instead I used liberal amounts of changes to come up with a 29mm powered "sort of Solar Sailer" scratcher. I would say "In the spirit of"

I am not sure this is the final ork file. And it may not even be practical. But its an idea. And I 3D printed using PETG the BT80 scaled BNC50J

Note I intend on using the dowels and stuff. Just don't think OpenRocket would care.

SolarSailor-2.6-38mm-center.png
 

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gdjsky01

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Sorry. I 3D printed the BT80 version of the 50J nose cone. I used PETG. Came out with a lot of little bumps but they'll sand out fine. And the fit was spot on.
 

green dragon

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Will have to get a photo but I have a BT80 based " Solar Sailer 2.6 " upscale of the sailer 2... to scale, about 6 feet tall. flies good on an F motor. Still need to finish paint and decals.
 

gdjsky01

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This is a dry partial fit... gives you an idea as to the length. And that is not scale!

Sort-of-Solar-Sailer-00015.JPG


The couplers and 38mm CRs glued and filleted. One for the front and one for the back
Sort-of-Solar-Sailer-00016.JPG



Let us mark the TTW fin slots.
Sort-of-Solar-Sailer-00017.JPG

Let us cut from TTW fin slots.
Sort-of-Solar-Sailer-00018.JPG

Ok that is close enough.
 

gdjsky01

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Added terminals to the bulkhead for a charge and cable cutter.
Solar Sailer 2.6 - 00020.JPG

Little 30 minute epoxy to keep the nut feeling like a nut
Solar Sailer 2.6 - 00021.JPG


Place the forward coupler. the bottom of the coupler will be flush with the forward 66mm BT80. The 2,5 meter shock cord is anchored in the forward end of the 38mm center tube with a LOC style attachment using 3mm kevlar for the 'loop'. Oh, and yes that is wood glue. No need for epoxy on the wood to paper joints.

Solar Sailer 2.6 - 00022.JPG


Since the end of the 38mm tube you see is also the MMT, I can use motor ejection for various scenarios.
 

gdjsky01

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I cut the vinyl for the gantries.
Solar Sailer 2.6 - 00029.JPG

After gluing the aft coupler, I added two of the three fins. Aft meaning the coupler with CRs that attached the the center 38mm to the 2.6 inch (66mm) aft body tube (like you can see on the forward end).
Solar Sailer 2.6 - 00030.JPG

Note the thin kevlar safety line I'll use to put the aft centering ring back out. It is not glued in. It is being used to center the MMT.

One all three fin's root edges are glued (wood glue BTW) and dry, I'll pull the CR out. Pour a fillet on each fin, then do a final push of the CR up against the fin tabs. The CR is not used for retaining. I have an Aeropack 38mm retainer and JB Weld for that.
Then I'll have to seal the edges of the fin slots and pour some outside fillets.
 

gdjsky01

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Some fillet of fillets...
Wood glue
IMG_1731.JPG

Then, some FnF for the wood grain. The front is fitted, but just for balance. No glued on
 

gdjsky01

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Yeah... its been a bit. Life is happening, and it is not good.

But the ship is a refuge from all the other medical and financial woes because almost everything in it was paid for 10 to 20 years ago.

So I got the 'so called trusses' installed. Still using wood glue which means I have to use putty to fill in the little holes that form as the glue shrinks.
Solar Sailer-and-me.JPG



Solar Sailer II.IV-assembled.JPG
 

jqavins

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Looking good.

What's the purpose of those couplers shown in post # 11? I guess those centering rings are for the step changes in the diameter, but why are couplers needed, as opposed to putting the CRs directly into the larger tubes?
 

gdjsky01

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More vinyl cut and applied. No longer worrying about it looking like the Estes original. More about my satisfaction. And getting it done.

I really like how this 'not quite true to the original' logo came out
Solar-Salier-00045.JPG


The original had no 'cockpit'. I think I see why and may remove that before clear coating
Solar-Salier-00046.JPG

Way over the top name decal. But I like it.

Solar-Salier-00048.JPG
 

gdjsky01

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Should fly this month if the weather (rain) allows. It uses very lightweight tubing. The whole schmear I think weighs in at under 2 pounds. Thinking G or small H for the first flight... not sure if I should go electronic or motor deployment, or both.
 
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