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« on: June 03, 2012, 08:48:36 AM »
lastRites
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Hi all Smiley
I got tired of studying all day and decided to build a gider with what I had on hand. Built one with some coro and a cycle spoke. Got about a 100feet with a hearty hand launch Tongue

Now having been bitten by the glider bug I have some questions  Grin

Is there any way of giving my glider a little more lift?

I did not take any measurements while making this, are there any definite ratios between the wingspan and the fuse that have to be maintained?

Does anyone has any plans for sub 15" gliders which can be made without using any exotic (Tongue) materials like carbon fiber or balsa?

thanks!
Trishit
glider.jpg
Micro (~10") glider
* glider.jpg (51.26 KB, 800x600 - viewed 950 times.)
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« Reply #1 on: June 03, 2012, 09:00:24 AM »
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scratch builder and DIYer
Good job Trishit Thumbs Up that glider looks great.
And as far as i know, gliders have an aspect ratio of 7~9:1
(Aspect Ratio= span/chord)
cheers:)
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« Reply #2 on: June 03, 2012, 09:29:36 AM »
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change the way you fly!!!
beautiful oneee Trishit......  Clap Clap Clap Clap.. what you could do is just add a small strip on top of the wing abut .5 cms width along the leading edge and she should give u more lift....  Thumbs Up Thumbs Up Thumbs Up
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« Reply #3 on: June 03, 2012, 10:08:06 AM »
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VTOL - Vertical Take Off & Landing
hi trishit

there has been a lot of interesting work done by Kline and Fogleman on multi Step airfoils which might greatly help the glider to generate more lift

that is exactly what pradeep has also mentioned

here is the link if you wish to read up more on them http://en.wikipedia.org/wiki/Kline%E2%80%93Fogleman_airfoil

more importantly refer to the two pictures attached they shall help you choose the right the KF airfoil for the glider

just another note of caution due to the excess lift generated the nose of the glider is likely to lift up and stall so you might want to add a little bit more nose weight if this happens.

Subbu  
kfm-airfoils-60percent.jpg
Re: Micro (~10") glider
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« Reply #4 on: June 03, 2012, 11:57:47 AM »
lastRites
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Thanks! I was looking into KF airfoils too but don't you think the wing would become a little too heavy having two layers of coro?(I am using 3mm coro)
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It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
 

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« Reply #5 on: June 03, 2012, 12:08:54 PM »
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☼ noob as always ☼
put depron layer on top instead of coro
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« Reply #6 on: June 03, 2012, 12:28:48 PM »
lastRites
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Depron is very hard to come by here Tongue I am thinking about putting thermocole..
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It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
 

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« Reply #7 on: June 03, 2012, 01:31:32 PM »
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☼ noob as always ☼
let me tell you a trick, go by your party craft store and purchase the foam plates for party Smiley they are made of depron, purchase that doesnt have design in them that is plain bottom. Smiley
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« Reply #8 on: June 03, 2012, 01:49:42 PM »
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L'enfant Terrible du RCIndia
Some info on Depron / Bio Foam picnic plate gliders:


http://www.rcindia.org/chatter-zone/depron-chuck-gliders/msg16871/#msg16871

http://www.rcindia.org/rc-general-topics/aeromodelling-classes/msg14857/#msg14857
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« Reply #9 on: June 03, 2012, 02:10:54 PM »
Pikle6
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VTOL - Vertical Take Off & Landing
you might also try an uncambered airfoil like the one on GWS slowstick if you are unable to source depron the airfoil on mr. moss is also a good example. also a polyhedral will help
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E.V.Subramanian
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« Reply #10 on: June 04, 2012, 05:45:52 PM »
lastRites
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Thank you all! I built another one with a dihedral wing and v tail. Flies quite well! Will post pics later!
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It is the pervading law of all things organic and inorganic,
Of all things physical and metaphysical,
Of all things human and all things super-human,
Of all true manifestations of the head,
Of the heart, of the soul,
That the life is recognizable in its expression,
That form ever follows function. This is the law.
 

Read
« Reply #11 on: June 04, 2012, 10:14:20 PM »
KALYANPRODHAN
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Information sharing improves knowledge of both.
My small efforts posted earlier
http://www.rcindia.org/self-designed-diy-and-college-projects/my-smallest-total-home-made-rubber-power-glider-incl-prop

http://www.rcindia.org/kites-trains-free-flight-and-all-others/16-cm-wingspan-rubber-powered-plane-%28lt1hr-time%29/

http://www.rcindia.org/self-designed-diy-and-college-projects/again-another-4-inch-glider/

http://www.rcindia.org/kites-trains-free-flight-and-all-others/rubber-powered-glider-with-icecream-stick/

http://www.rcindia.org/kites-trains-free-flight-and-all-others/sunday-try-glider-complete-from-thermocol-plate/

http://www.rcindia.org/kites-trains-free-flight-and-all-others/colorful-paper-glyder-print-cut-glue-fly/

and some classification is here
http://www.rcindia.org/rc-general-topics/aeromodling-decipline-fai-%28types-of-model-sub-classification%29/

Thanks
« Last Edit: June 04, 2012, 11:46:59 PM by KALYANPRODHAN » Logged
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