The new wings I’ve been working on for the last couple of weeks was well worth it.
Here it is last night, with the skin on:
And finally, this morning ater a successful flight:
The 1.4kv turnigy aerodrive motor, 10×6 prop and 5000mah battery gives ample thrust.. the plane can fly really fast.
Stall speed is low.. even lower (it seems) than my 1.4m hitec skyscout. No doubt the airfoil (as close to NACA 4412 in case you’re interested) made a huge difference.
However throttling up causes the plane to pitch down negating the lift.. nothing which some up elevator cant fix though. It looks like I need to put in some more down angle to the motor now that the CG is known.
The elevator also needs to be secured more firmly to prevent it from rolling (wagging really) which affects the flight characteristics somewhat specially when banking.
Today I finished some important parts of the project. The motor is screwed to a couple of pieces of high density boards which sandwiches a PVC strip(from an electrical conduit). This is installed(ie glued), at an angle, to the base of the plane like so:
The angle (the motor slightly pointing down about 5°) is done to offset the forward and down effect of a higher mounted motor. Doing this angle offset will cause the back of the main wing to have a slight down push forcing the leading edge of the wing to pitch up.
Once the motor mounting is done.. the section where the main wing is attached to the fuselage needs to be made.
The image above is upside down and shows the CF rods that’s used as the scaffolding for the wing base as well as the CF rods where the rubber-bands will be attached. I sure hope its sturdy enough!
Finally, I began making the rest of the fuselage. The space inside is big!