YC 14 Winter Project

[Burnhard]

Wing is closed. I started experimenting with the flaps today. Build a little mock-up of the wing to do that. The set-up generally works as you can see from the attached pictures.

View attachment IMG_3497.jpeg
View attachment IMG_3498.jpeg

What does not work so great is that the first flap creates quite a large step when lowering the flaps.

Does anybody of you has an idea how to solve this? The one thing that comes to mind is that I could cut the upper part of the flap a bit further back (maybe 2 cm or so). Any thoughts?

 

[bisco]

hard to tell exactly what is wrong from that angle

 

[Burnhard]

hard to tell exactly what is wrong from that angle

Here is a pic that shows it better. You can clearly see how the flap rises over the upper wing surface. View attachment IMG_3502.jpeg

 

[Burnhard]

I belive I found a solution for the flaps. Increased the angle on the hinge for the first flap to 70 degrees (from 60) and shortened the upper sing of the flap by about 2cm (and added these to the upper surface of the wing. Now it works much better. View attachment IMG_3506.jpeg
View attachment IMG_3507.jpeg
View attachment IMG_3509.jpeg

 

[Burnhard]

Made good progress today. Cut the inner flaps
From the wing. Then did a test piece of the outer wing to do a test of the outer flaps. That worked as well. Will try to complete the wing over the Easter weekend.
View attachment IMG_3510.jpeg

 

[bisco]

looking good! i think you really figured it out. i was baffled

 

[Burnhard]

Got all the surfaces cut and got first fan installed. Next stop is figuring out how to get the wing attached.

 

[Burnhard]

Installed the servos over the weekend. Also figured out on how to install the wing. I will first fully complete the wing and will then mount the wing in the fuse. I guess by end of next weekend we can probably do our first self powered roll test.