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Sep 04, 2012, 04:47 PM
Build something.
Nodd's Avatar
Build Log

Scratch Designed/Built Sailplane Fuselage


This is a continuation of a couple of build threads I've been working on...
My original design flew beautifully but suffered from a design flaw in the wing (consequently it folded in half mid-flight). Since that fun learning experience I've redesigned & rebuilt a better wing. In fact the new wing turned out so nice that I'm reluctant to fly her with the original fuselage. So I'm going to redesign/build that also. This thread will document that process. Subscribe if you're interested.
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Sep 04, 2012, 04:48 PM
Build something.
Nodd's Avatar
A new look
While I liked the profile of my old pod-n-boom design, seeing as I'm rebuilding this from scratch I have the opportunity to change the design if I wish. Here's a few "out there" ideas for the new pod. I'd love to hear your thoughts on which if any you like...



Let me know which you like & why.
Sep 04, 2012, 04:58 PM
Registered User
Hi, Nodd. Still a glutton for punishment?

I like "A", "B", and "F". Smooth curves. Low frontal area. And they have that scale sailplane look we all love. Maybe go with an oval or egg shaped, with the wide end on top where a pilot's shoulders would be, cross section to make it more personal?
Sep 04, 2012, 05:48 PM
Dragons, WindMills, all Same
jcstalls's Avatar
Mmm

F for overall

C or E if the wings flap

H or I for Oldtimers

G if you like the number 8 or planet Uranus. (Unusual, Odd, different)

Jared
Sep 04, 2012, 06:08 PM
Registered User
hog2soar's Avatar
Nodd,

Great build!

I like C&D only because the wing angle goes up off the fuselage,so it kind of balances it. Also it has a good belly for landing and the motor is up higher for those not so perfect landings. Besides it's such a unique design,do something different.

If the wing came off the fuselage level or flat then broke up at the poly brake like a typical wing,then I would go with B&F
Sep 04, 2012, 07:34 PM
Theoretical balsa dust maker
plane_tech's Avatar
1) A
2) B
3) F

A would give more room for additional equipment / larger battery
F and B are slightly more conventional and B is slightly more streamlined then F.

4) I - Different, unique, something out of the ordinary.Would allow for a positive grip on the fuse for hand launches but would take the brunt of the impact on landings.
Sep 04, 2012, 07:56 PM
Registered User
doc993's Avatar
F or B.
Sep 05, 2012, 08:10 AM
was geht , müssen unten kommen
Keenan smith's Avatar
F and B
Sep 05, 2012, 09:03 AM
Be the duck. Whaaaa?
UberZogster's Avatar
I think C will look cool with your wing.
Sep 05, 2012, 04:53 PM
Build something.
Nodd's Avatar
Great feedback, thank you all.

I've pooled the opinions from this & my mirror threads on other forums & as expected, the more modern sailplane profiles (A, B, F) were the most popular. I could certainly go with one of those & end up with a very nice sailplane. However after thinking about it some, I've realized I'm not necessarily looking for the most efficient, most sleek design. I'm now leaning towards doing something a little out of the ordinary. Something that'll stand out in the crowd. The gull wing achieves that goal to a point but I'd like a "quasi-vintage" fuselage to go with it.

So here's another batch of doodles...



A2
Modern sailplane profile, while sleek, lacks uniqueness.

B2, C2
Has a subtle avian feel (looks a little like a bird's head). I think these tie in wonderfully with the gull wing. Flying a giant bird might be fun.

D2, E2
An under-slung pod design. Inspired from some vintage sailplane designs I've seen. Again these work with the gull wing & would be a little different.

Once again I welcome comments & thoughts.
Sep 05, 2012, 04:58 PM
was geht , müssen unten kommen
Keenan smith's Avatar
A2
Sep 05, 2012, 05:11 PM
Registered User
I like the pod and boom look of E2. Hmmmmm. Perhaps go with a more rounded nose to keep that Golden Age look?
Sep 05, 2012, 06:39 PM
Theoretical balsa dust maker
plane_tech's Avatar
Structurally, C2 looks the best.
Sep 05, 2012, 08:43 PM
Registered User
hog2soar's Avatar
"C2" then "B2" Paint a couple eyes on it and a yellow/orange nose and spinner and you'll have a flying goose.

The only thing I see that may be of concern is the area of the fuse over the top of the wing and how to blend that into the wing.
Sep 06, 2012, 02:01 AM
Registered User
mhodgson's Avatar
One thing to consider with a deep fuselage. is the effect of having lots of weight so far below the wing. How will that affect the roll response of the ailerons?


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