@wutong On the Stability of Aircraft
Add a vertical wing below
@napkin7 Thank you
爱我苏联 要素过多
your up full very nice
nice
不错
China?
@wutong On the Stability of Aircraft
Add a vertical wing below
@napkin7 Thank you
爱我苏联
要素过多
your up full very nice
nice
不错
China?