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« on: February 25, 2017, 02:19:43 PM »
Glidiator
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City: Vasco da Gama
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Commenced an interesting Gyro Glider. Design from Model Airplane News May 1957.
Write up says in a decent headwind it will rise up like a kite without actually creating a forward speed.
Used up all the residual balsa I had in stock. Had to improvise with balsa foam sandwich for some sections which had no structural strength requirements.
Pic & plan being reduced in file size for attachment.
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« Reply #1 on: February 25, 2017, 03:43:42 PM »
K K Iyer
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Something new!
Await pics.
(Plan available on outerzone)

Is it free flight (towline falls off)?
Or like a kite?
Regards
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« Reply #2 on: February 25, 2017, 05:17:13 PM »
Glidiator
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Hi KK,
Plans on outerzone. Has a nice introductory also
http://outerzone.co.uk/plan_details.asp?ID=4856
Towline falls off.
Had a sneaking feeling that you would be interested in something like this.
Pics by tonight.
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« Reply #3 on: February 25, 2017, 06:09:25 PM »
K K Iyer
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@glidiator,
Sure I'm interested.
You could look up something really weird called 'Chabrylis'* I think...
Regards


*Edit
Charybdis
« Last Edit: February 25, 2017, 09:35:20 PM by K K Iyer » Logged
 

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« Reply #4 on: February 26, 2017, 03:00:06 PM »
Glidiator
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Hi,

Pics attached.
I also picked up a thickness measuring gauge from a jeweller. Measures upto 0.1 mm. One revelation was that the balsa sheets we get have quite a wide variation in thickness across the sheet.
Especially in the more smaller dimensions like 1 mm, 2 m etc. Even what I bought as a 1 mm sheet was almost 1/5 mm in certain areas.
If one is doing serious indoor rubber powered duration contesting, then these wide variations in thickness will add tremendously to the AUW and consequently to the duration.
There is a guy called Nick Aickman who specializes in Indoor Balsa --  supplying stuff in very thin accurate thickness ( less than 1 mm also) -- also having very low density. But it costs a bomb.
Long way to go in our Indoor standards before we start needing such balsa.

Pics of the Gyro Glider build and thickness gauge attached.

Fuselage, Rotor hub profile, Rotor Blades.jpg
Re: Gyro Glider Outdoor towline
* Fuselage, Rotor hub profile, Rotor Blades.jpg (48.05 KB, 360x640 - viewed 61 times.)
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« Reply #5 on: February 26, 2017, 03:30:03 PM »
Glidiator
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More pics

The full size plan needs 9 A4 size tiles

Am working on a design for making dismantling type rotor arms and stab as it will be a pain to store this model in an unwieldy box if everything is fixed.
Am toying with the idea of making the stab snap on to the fuselage using small (1.5 mm x 1 mm) neodymium magnets(Pretty powerful stuff). Got this thought from a "Guillows Snap and Fly indoor RC kit I bought a few years ago. Everything snaps together on magnetic tips including lipo battery connectors, servo rod connectors and the entire fuselage base to the wing element that has all the electronics.
Will have to design the rotor hub in such a way that it can be unscrewed and blades dismantled.
Lot of sanding to do for the aerofoil shape of the rotor blades and streamlining the fuselage.

Back to the workboard.

Thickness Measuring Gauge.jpg
Re: Gyro Glider Outdoor towline
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