Print Page - pylon mount 2.5 meter rc glider build log

Title: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 10:53:24 PM

Here is my 2.5 meter rc glider

Material used
Coroplast
Ply wood
Pine wood

Specification
Length : 125cm
Wing span : 250 cm
Wing are . : 62.5square decimetre
Chord. : 25 cm
Flying weight : 1200 g

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: kamalsahai on June 11, 2015, 11:07:33 PM

GOOD ONE

U HAVE DRAWING LET ME KNOW

KAMAL PRRET

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 11:10:42 PM

The dimensions are Olympic glider 2

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 11:27:57 PM

9894395614 my number pls what's app... I ll provide the drawing...

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 11:31:17 PM

I have used Clark y airfoil with 10 ℅ camber thickness and 2° angle of attack... Which takes my co effeciency of lift to 1 to 1.2
As a result the stalling velocity is just 20 km/hr....

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 11:46:28 PM

Here comes the pylon

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 11:51:54 PM

Always want to make something easy to carry... That leafs to detachable wings

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 11, 2015, 11:56:10 PM

Fuselage....

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: satz flying on June 12, 2015, 12:12:52 AM

its great to from you. looking for maiden video

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 12, 2015, 12:18:11 AM

Thank u brother... Maiden video will come very soon...

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 12, 2015, 09:38:38 PM

Made new wings... This time it's two price wing...

Pics of wing and attachment technique...

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: sanjayrai55 on June 13, 2015, 12:32:48 PM

What does the ply screw into Dev?

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 13, 2015, 01:21:22 PM

Pine spar sanjay sir... Two spine spars runs inside for 50 cms in each wing... They are connected by the ply with screws at top and bottom

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: sanjayrai55 on June 13, 2015, 02:03:19 PM

OK, this is complicated, and I may well be wrong :headscratch:

but...

The maximum bending moment is at the centre while in flight. In fact, on most corro builds (eg see spadtothebone.net) you will see a fairly standard practice is to use a wing centre ''wrap'' to counter this.

As things are in your build, it may be a point of structure failure. That is, when executing a banking turn, and bending moment on the wing is high, it could break there. One solution would be to use a longer ply strip, but I fear even that may not be good.

Could you possibly have a solid joint at the centre, and removable at the tips of the polyhedral, if that degree of portability will suit you?

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: sanjayrai55 on June 13, 2015, 02:07:04 PM

If your spar is thick enough at the centre (eg 25 mm) then you could make a tongue-and-groove joint with a single bolt down the middle, and a wing wrap glued on one side, and a push fit on the other.

If Mr. K K Iyer reads this post, it would be interesting to see his very knowledgeable viewpoint too.

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 13, 2015, 02:07:54 PM

Thank u for ur valuable words... Sanjay sir.... I have made two set of wings.... One is two price and the other is three pieces.... Will test them.. And let's see.... Whether the structure is enough to with stand...

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: sanjayrai55 on June 13, 2015, 02:09:54 PM

Good luck :thumbsup:

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 13, 2015, 02:17:09 PM

Sanjay sir... I have a doubt... I have made the ply screws on both sides of the spar... Will that make the two spars act like a single one...

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 15, 2015, 07:47:40 PM

Unable to upload video so some pics of maiden...

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: sanjayrai55 on June 15, 2015, 07:51:37 PM

Dev, you can't directly upload a video. Put it on You Tube, and use ''insert hyperlink''

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 15, 2015, 07:54:52 PM

Sir... I am using internet on phone... That's the problemmmmm

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: Devanesan Andrews on June 15, 2015, 07:56:07 PM

Sanjay sir... Where can I get balsa spars???

Title: Re: pylon mount 2.5 meter rc glider build log
Post by: sanjayrai55 on June 15, 2015, 08:12:13 PM

I buy sheets from RC Bazaar or Sharma Models (aeromodelsupermarket.com) depending on who has stock, and cut the spar

RC India

RC Models => Electric Planes => Topic started by: Devanesan Andrews on June 11, 2015, 10:53:24 PM