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Old May 12, 2011, 03:02 AM
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tim hooper's Avatar
Telford, UK
Joined Feb 2000
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Clean Sweep - a 48" sportster with a swept forward wing!

Mornin' all!

I just thought I'd post a few pics of the latest proposed project - featuring a swept froward wing and T-tail. Just to be different really......

I've yet to cut any balsa, but the plans are well advanced.

tim
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Old May 12, 2011, 07:19 AM
Registered User
Blacksburg, VA 24060 USA
Joined Feb 2000
3,002 Posts
Tim,

Good on you! The late, great American model designer, writer and editor, William Winter, published a swept-forward wing design in Radio Control Modeler about 15 years ago. That design was also tailless, IIRC. I don't have the article. I'm sorry I can't help more.

Jim R.
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Old May 12, 2011, 10:36 AM
Visitor from Reality
United States, VA, Arlington
Joined Dec 1996
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Yo Tim
You're coming along nicely as head designer of the off-beat, and this is a fine sports model example. Good luck with the project.

Looks an interesting mix of small racer cum small sporting aircraft for those whose bank managers are fussing at for not spending on a new hobby this month

Wing's interesting - I lean to 12% - 14% percent on account of thinner tends to demand going much faster throughout the envelope.

Also lean to D box sections - as stiff as fully sheeted, but quicker, lighter and, most important to a Yorkshireman - cheaper.

D
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Old May 12, 2011, 12:03 PM
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Ocala,Florida
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Tim,absolutely love that design,perfect for what i like to fly,any chance the plans will be available?
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Old May 13, 2011, 03:01 AM
Single-task at best...
tim hooper's Avatar
Telford, UK
Joined Feb 2000
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Cheers lads!

Dereck, I'm also an advocate of the 12% aerofoil, but I wanted something a little bit thinner for this one, not only to reduce drag, but also for appearances sake. The price of aesthetics, eh?

Must17, glad you like it! If it flies as it should, then it'll probably be submitted for publication. Let's hope so anyway!

tim
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Old May 13, 2011, 06:31 PM
Visitor from Reality
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She has a good mix of 'different', to which we all should strive, and 'if it looks right, it should fly right'.

The 10% wing is watched with nearly bated breath

D
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Old May 13, 2011, 06:42 PM
Huh?! well waddayouknow!?
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Old May 14, 2011, 03:17 AM
Really?!?
ChrisS's Avatar
Lost ...on the 3rd rock out
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"The late, great American model designer, writer and editor, William Winter, published a swept-forward wing design in Radio Control Modeler about 15 years ago. "

Bill must have liked forward swept planes. I built one of his designs, called a Goblin. Also had a forward swept wing. And a huge V tail. Ugliest plane I ever made, built it "because I could" really. Turns out that it flew really well.

Looking good Tim. I like the mix of conventional with subtle "not so conventional" thrown in. I bet it will fly well.

Chris
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Old May 14, 2011, 08:06 AM
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tim hooper's Avatar
Telford, UK
Joined Feb 2000
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Cheers Guys!

Some more progress this morning, in that I've got the ribs and spars glued to the bottom skins, following which we had a re-think about the slightly-tubby fuselage, and slimmed it down a tad. Look any better?

tim
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Old May 14, 2011, 09:14 AM
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Can't beat a curvy rear end
(Ducks...)

Dereck
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Old May 14, 2011, 10:12 AM
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tim hooper's Avatar
Telford, UK
Joined Feb 2000
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Quote:
Originally Posted by Dereck View Post
Can't beat a curvy rear end
(Ducks...)

Dereck
Don't call me 'ducks'........

tim
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Old May 14, 2011, 07:59 PM
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Quack, quack

D
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Old May 15, 2011, 03:59 AM
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Telford, UK
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Back to our scheduled programming.....

I've joined the wing panels (20mm dihedral under each tip) with braces cut from 1.2mm aluminium sheet - both of which have slightly bent in the middle to allow for the sweep.

Good, eh?

tim
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Old May 18, 2011, 12:03 PM
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Thanks Tim,looking forward to it,very racy!
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Old May 18, 2011, 03:44 PM
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tim hooper's Avatar
Telford, UK
Joined Feb 2000
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Quote:
Originally Posted by MustangAce17 View Post
Thanks Tim,looking forward to it,very racy!
Let's not count our chickens before they're hatched, eh?

More progress today; now that the wings are skinned, I've been able to cut the ailerons free and set about shaping the tips.

Then this evening saw the start of the fuselage sides.

tim
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