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Author Topic: Hütter H17 - 1/16 Scale Glider  (Read 1375 times)
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Yak 52
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Jon Whitmore



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« on: October 22, 2013, 04:02:39 PM »

I've started my Hütter H17 for the new glider class at Nottingham. The original was designed by the Hütter brothers in the '30's and there are lots of good drawings available.

The full size span of 10 metres gives me a wing span of 23.75" at 1/16 scale but due to the high aspect ratio this is still a small model. I'm working from my own plan but the structure follows the original quite closely.

I'm going to finish the model as OY-CJX which is still flying:
http://www.youtube.com/watch?v=Bh0v8IJJkwk


Jon
Attached files Thumbnail(s):
Hütter H17 - 1/16 Scale Glider
Hütter H17 - 1/16 Scale Glider
Hütter H17 - 1/16 Scale Glider
Hütter H17 - 1/16 Scale Glider
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Pete Fardell
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« Reply #1 on: October 22, 2013, 04:12:23 PM »

A very nice choice! I enjoyed that video too.
(I assume you've already made your RC little grey tractor to tow it back to the pits)
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Yak 52
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Jon Whitmore



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« Reply #2 on: October 22, 2013, 04:20:24 PM »

Now there's an idea  Grin

The fuselage has an interesting shape so I decided to build this one like a boat, bottom half first with gunwales and chines (stringers) and then add the top deck. The keelson (the spoony bit) was laminated to avoid it pulling the fuselage out of true. The rear keel was then scarphed on.

The whole forward bay will be a balsa block.

(For some reason I can only add photos one at a time with the edit button - so bear with me  Undecided)
Attached files Thumbnail(s):
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
« Last Edit: October 22, 2013, 05:00:50 PM by Yak52 » Logged
Russ Lister
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Russ Lister



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« Reply #3 on: October 22, 2013, 04:25:43 PM »

The glider bug certainly seems to be biting .... nice choice Jon.

I must admit that I feel the pull back to gliders .... it was all I did at one time. I made a start on a winch today ... hoping to get the prize for most elaborate folly  Wink
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Yak 52
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Jon Whitmore



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« Reply #4 on: October 22, 2013, 04:32:06 PM »

I've splashed out and got myself an all whizzy F. Dragon Industries 'Winch-o-Matic®'  (well actually Rich has sent one for a beta test.)

Here's the finished 'boat'. Due to the curve in the stringers it has a weird optical effect where it looks twisted - but it does the same from both sides so I don't think it is!
Attached files Thumbnail(s):
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
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Yak 52
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Jon Whitmore



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« Reply #5 on: October 22, 2013, 04:44:58 PM »

Next, I added the upper halves of the bulkheads. The rear deck spine was pre-made on the building board in the style of a wing tip. The whole lot weighs 2g but it could have been lighter because it's incredibly stiff and strong, even before covering. I've also been speeding things along by using thin CA instead of PVA where I needed clamping pressure.
Attached files Thumbnail(s):
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
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Monz
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« Reply #6 on: October 22, 2013, 04:57:20 PM »

Looks good Jon. Are you going to spray the yellow or use coloured tissue?
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Yak 52
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Jon Whitmore



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« Reply #7 on: October 22, 2013, 04:59:36 PM »

I have a lemony cream domestic tissue I might use but I could also do with the airbrush practice. It will depend on the final weight partly but since its flying only, probably tissue.
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bernienichols
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« Reply #8 on: October 25, 2013, 02:15:54 AM »

That looks really fine Jon...such a neat build!

Inspired I am [/yoda]
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Bernie Nichols UK - Will be missed by all that knew him.
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« Reply #9 on: October 25, 2013, 09:54:52 AM »

Great subject Jon, love the skid!

--Ates
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boffin99
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« Reply #10 on: October 25, 2013, 01:44:36 PM »

Bernie,

Inspired, you say.
No diversions, promised, you did.
Focus on declared targets, you said.

Pigs flying, I think.

Chortle, Ian
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Ian Middlemiss UK - Will be missed by all that knew him.
Yak 52
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« Reply #11 on: October 25, 2013, 01:51:10 PM »

Thanks Ates,

Bernie: Nieuport flying I want to see!
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Monz
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« Reply #12 on: October 25, 2013, 01:59:36 PM »



Bernie: Nieuport flying I want to see!

Use the force you must, Jon.
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Yak 52
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« Reply #13 on: October 28, 2013, 07:17:32 AM »

I've been getting inspired by the gliders myself Bernie  Grin

I had a play with the Winch-a-matic® and the Primary glider courtesy of Rich (Fat Dragon) at Impington. It was great fun and very addictive Smiley I was surprised how much line was needed to get the height, about half the length of the hall or more. Perhaps a bit more incidence would steepen the climb. The speed of Rich's winch is just about perfect. Thanks to Bernie, Ian and Russ for helping.

I've been plugging away with the Hütter. I've enlarged the tail volume slightly to 0.45 (scale was 0.33  Shocked) It has a very short tail but looks trim-able. The tailplane incidence will be adjustable. The wing section is a flat bottomed 9% french curve special. I've given the wing 3˚of dihedral, the original has none but it does creep in under flight loads by the look of the photos. The wing tips curve up to the spar.

The nose block is just rough sanded but it has brought the model to life. I have a few details to add but the weight at the moment is just under 7g. A bit heavy maybe but it feels robust.
Attached files Thumbnail(s):
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
Re: Hütter H17 - 1/16 Scale Glider
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