Wind Tunnel/Drag Preview

[Right]

Which one of these crafts would you guess preforms better?

http://imgur.com/CBq2HLf

Turns out its the on the right. Not because its floating out besides the craft, turns out that doesn't make any difference at all. It being upside down reduces drag more than right side up!

Given this, I'd give an arm and leg for a wind tunnel or some sort of drag preview, especially with respect to drag occlusion. Testing aerodynamics is becoming a bit laborious. Anyone know of any tools or tips besides doing comparative dry runs?

[Foxster]

Yup, been known for a while. It's because it reduces the drag at the front and the back of the craft when switched around like that.

I too would love some way of getting at least a vague idea of the drag of a craft whilst in the VAB/SPH. Just a "this is the total drag when flying in a straight line at 1000m" would do. Would then at least allow you to compare craft and parts as you add, remove and change them.

[pellinor]

I'd also love to see some kind of wind tunnel mod, maybe an extension of RCS build aid? This kind of stuff is quite tedious to test in a repeatable way. When 1.0 came out TweakScale did not scale drag at all, and it took quite long for people to even notice.