Houndpup Rc
Legendary member
Hmmm...if I come next you I will probably put BBQ in the leading edge and have a aluminum spar.
72" Finless Combat wing
- Thread starter Firestar119
- Start date
Firestar119
Active member
It is just a figment of your imagination (don't tell anyone)
Mr Man
Mr SPEED!
Firestar119
Active member
Yeah the one I'm currently building has a leading edge reinforced with the larger 6mm skewers
Houndpup Rc
Legendary member
Yeah, I might even use tig welding rods like this:
Firestar119
Active member
I do have a bunch of salvaged cf, aluminum and fiberglass spars
Houndpup Rc
Legendary member
Nice!
Firestar119
Active member
I'm also planning to put together a Super Baron with 2 motors and split ailerons to use up the motors I just freed with that spectacular crash
Firestar119
Active member
1 C pack motor is already overkill for the baron
Houndpup Rc
Legendary member
Yeah i know...That's why i want to put a 3536 on one!
Pieliker96
Elite member
The conclusion I have come to over my time in combat is that nothing short of fiberglassing the leading edge or the entire wing will prevent major destruction in a hard-hitting midair. Last year I had carbon tube along the leading edge and quadruple / quintuple-laminated foam spars around carbon tubes. One good hit with an XL scout was all it took to break my wing. The Scout, in comparison, just had a kinked tail and gently spiraled to the ground, under partial control.
I would bet that fiberglass over foam core would be the ultimate for combat impact resistance: tough outer shell to take the hit, homogenous core to distribute the load. I've got a year and a half of composites experience now from my work, and 2 plies of 8oz over foam core is so rigid and tough that it's hard to comprehend compared to foamboard.
Houndpup Rc
Legendary member
Ever try metal?
Pieliker96
Elite member
It could definitely work. An aluminum tube down each leading edge would definitely be strong. It would be a question of how much wall thickness you need, and how much weight that adds, how it distributes that load into the rest of the structure, and what that structure is.
My hunch is that fiberglass over foam core would be more impact resistant per unit mass than an aluminum leading edge on an otherwise traditional structure - because the foam core distrubutes the load and as such lowers the stress compared to discrete structural components, and because the bond area between the glass and the foam is so large.
Whatever the leading edge is it certainly has to be on the outer surface of the wing (not buried behind foam like I did, since that will easily snag on the foam layer above) and made out of something with good radial strength (not uniaxial pultruded carbon tube like I did).
Houndpup Rc
Legendary member
Yeah i kinda want to try tig welding rods (They are aluminum and about 1/8" thick.
Firestar119
Active member
I just checked the GoPro, and it's completely dead. So much for "action" camera, it broke the first time it got any action. No visible damage, I guess the blunt force shattered something important
Firestar119
Active member
it has this weird scar on the front that looks like melted plastic
it would seem that someone's metal prop spinner scored a direct hit
it would seem that someone's metal prop spinner scored a direct hit
Mr Man
Mr SPEED!
Yes I believe you’re right about the spinner.
Mr Man
Mr SPEED!
Is it lighting up? Because there just might be a loose wire that needs some soldering…
Firestar119
Active member
no lights
Mr Man
Mr SPEED!
sounds like some wires are loose. (I think)
