For a fictional aircraft (for example the romanian aircraft with american radial engine), must I do an AU first? Once Again, thanks to all of you.
If that was only a paper project etc. something that was real but was not move beyond design phase you put it here:
http://www.shipbucket.com/forums/viewto ... =27&t=2149
If this is 100% your design for AU then it will go here:
http://www.shipbucket.com/forums/viewto ... =27&t=5291
And if you want to create own AU in larger scale you can create a new topic for it like: Romanian Kingdom AU