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Sep 14, 2017, 07:13 AM
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BigBang Ds new french project

Hi all !
I come here for you to talk about a project in the making.
sorry for my english which is not very good!
The glider is 2.9m wingspan, aspect ratio 19 and the target weight is 6kg!
I invested in a cnc milling machine to carry out this project!
The task of aerodynamics was entrusted to Jean luc foucher (designer of the prodij hm and aliaj hm)
if attached a photo of the 3d
actualy the mold is in the milling machine !
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Sep 14, 2017, 07:17 AM
C'mon more Energy
Swoopdown's Avatar
This looks great Mattieu.
Thanks for sharing. We wil be following your progress keenly.
Sep 14, 2017, 02:19 PM
Remember... Fly for fun!
Very cool looking design!

Is that an all-moving tail, or is it fixed ahead of fin like a maxa pro?
Sep 14, 2017, 03:04 PM
Registered User
It s the same style of maxa !
Sep 14, 2017, 05:22 PM
Jonathan Wells
jonathan4000's Avatar
Looks Great
Sep 14, 2017, 05:34 PM
Registered User
Thanks Jonathan ^^
Sep 15, 2017, 12:36 AM
608 km/h!
josh18's Avatar
wow that looks slinky! And nothing like the current croop of really fast designs. I like the elevated and forward stab- was this done for a different look or did cleaning up the intersects etc lead to it? In any case it has a look all of it's own. I'll be really keen to watch the progress and hope to see some great speeds!
Sep 15, 2017, 02:58 AM
It flies!
Sean Moloney's Avatar
Beautiful work, nice to see some original thinking in the design. Did you do any analysis of the stall characteristics?

Sep 15, 2017, 04:35 AM
Registered User
The stabilizer will stay in this position, low enough to limit torsional forces, and in front of the vertical tail for an easy hook system!
Sep 15, 2017, 04:36 AM
Registered User
Thanks for like the design
Sean I dont understand what do you mean ?
Sep 15, 2017, 07:21 AM
It flies!
Sean Moloney's Avatar
Hi Matthieu, I was just wondering if Jean Luc did any calculations to check which part of the wing will stall first, that is will it stall at the tips, or the centre, for example. I'm just curious that's all
Sep 15, 2017, 07:25 AM
Registered User
Are you talking about high-speed?
Sep 15, 2017, 07:28 AM
Registered User
I'll talk to him to see
Sep 15, 2017, 07:36 AM
Registered User
There are 6 different airfoil along the wing! All were adapted according to the rope and reynolds
It should thus unhook evenly over the entire wing.
Last edited by matthieu b; Sep 15, 2017 at 01:38 PM.
Sep 15, 2017, 03:44 PM
Auzzie built planks
timbuck's Avatar
Very nice. I wondered when this was going to pop up , as I saw it on insta some time ago I've always like the DLG style planform and thought it would be cool for a DS arco machine with push rod going through tail plane , for pull for up set up.
Keep up the great work

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