SteveOBHave
Senior Member
I've actually almost completed construction on another design I'm calling 'Cobra'. It's a delta that has incorporated a few learned lessons from the Kahu project.
Cores cut, sanded and glued
Glassed and bagged - for the record the ridge down the root chord is BAD. This is because the strength in glass is achieved through keeping the fibres flat and straight. The core is probably strong enough on its own so at this scale it's not a biggie but it's bad practice to make a rookie mistake like that.
You can just see a couple of darker patches in the wing near the motor mount and a long one tip to tip. This is unidirectional glass, it's top and bottom and acts like a spar.
The winglets are purely cosmetic at this stage. Wing tips have a 2.5 degree twist in them for yaw stability
I'm looking to put a 'nostral' on the front with a low profile fairing running the length of the root for the ESC and receiver. the Battery will be cut into the wing just behind the blue dotted square (this is where the motor mount is glued in).
The Cobra should have about a 400-420W output and approximately 1.3 - 1.5kg of thrust - AUW should be in the 1kg range so it's going to be a real hotrod.
Cores cut, sanded and glued
Glassed and bagged - for the record the ridge down the root chord is BAD. This is because the strength in glass is achieved through keeping the fibres flat and straight. The core is probably strong enough on its own so at this scale it's not a biggie but it's bad practice to make a rookie mistake like that.
You can just see a couple of darker patches in the wing near the motor mount and a long one tip to tip. This is unidirectional glass, it's top and bottom and acts like a spar.
The winglets are purely cosmetic at this stage. Wing tips have a 2.5 degree twist in them for yaw stability
I'm looking to put a 'nostral' on the front with a low profile fairing running the length of the root for the ESC and receiver. the Battery will be cut into the wing just behind the blue dotted square (this is where the motor mount is glued in).
The Cobra should have about a 400-420W output and approximately 1.3 - 1.5kg of thrust - AUW should be in the 1kg range so it's going to be a real hotrod.
