|
Title: Can a wing be made with a specific airfoil using coro? Post by: topalle on November 07, 2016, 03:21:26 PM I want to build a coro wing with a specific airfoil. NACA 4412 to be precise. How can i make sure that the wing has the same airfoil throughout?
Title: Re: Can a wing be made with a specific airfoil using coro? Post by: sanjayrai55 on November 07, 2016, 04:58:09 PM Difficult. Make ribs, you can get quite close, but definitely not 100%
Title: Re: Can a wing be made with a specific airfoil using coro? Post by: topalle on November 07, 2016, 04:59:39 PM Also, what will be the weight compared to standard balsa construction with ribs?
Title: Re: Can a wing be made with a specific airfoil using coro? Post by: sanjayrai55 on November 07, 2016, 05:06:05 PM Balsa will be much lighter!
Title: Re: Can a wing be made with a specific airfoil using coro? Post by: samayaraj on November 07, 2016, 05:07:26 PM You cannot get the exact NACA 4412 profile if you use coro sheet. Since coro sheet has flute which will compress and will not give you the exact profile you need.
But you can try. You need to make NACA 4412 ribs and fix it to the spar as close as possible and cover the coro sheet such that the flute is parallel to spar. But covering coro sheet like this has less strength. You need to have strong spar and ribs to make your wing rigid. Title: Re: Can a wing be made with a specific airfoil using coro? Post by: sanjayrai55 on November 07, 2016, 05:11:56 PM Balsa Ribs: (with foam filling in front part) http://www.rcindia.org/electric-planes/the-hots-in-corro-a-bridge-too-far/
Title: Re: Can a wing be made with a specific airfoil using coro? Post by: samayaraj on November 07, 2016, 05:12:52 PM Instead you can cover it with covering film instead of coro sheet. This will give you near profile and much lesser weight
Title: Re: Can a wing be made with a specific airfoil using coro? Post by: sanjayrai55 on November 07, 2016, 05:13:48 PM With full balsa ribs
http://www.rcindia.org/electric-planes/16-piper-cub-(svenson)-in-corro/25/ Title: Re: Can a wing be made with a specific airfoil using coro? Post by: topalle on November 07, 2016, 06:00:51 PM Thanks everyone!
|