Sure, they are free to use. On a newer version I already had an modified version of your Z-20 drawing (just some detail updates acording to pictures found on the web). But unfortunatly that version was somehow corrupted yesterday and lost.
Two of Garlicdesign's wonderful fictional soviet aircraft from his Thiaria AU Yakovlev Yak-31 Fenian/Mastiff https://www.dropbox.com/s/gd05k9ts5snxoj1/Yakovlev%20Yak-31.png?dl=1 Yakovlev Yak-32 Frolic https://www.dropbox.com/s/gjh2ea27q30842y/Yakovlev%20Yak-32.png?dl=1 as well as a fictional space o...
Cascadia's Aoba class:[/b] I'm sorry to say, but I have to admit I liked nothing about this drawing. Ancient parts, and I feel the artist knew little about ships and even less about stealth ships. The aircraft shown on the drawing are of course of the standard we are used to from Cascadia, which ha...
Something from my Cascadiaverse AU which as of 2007 had a more advanced space program than real life. https://www.dropbox.com/s/y4nrft0ib81lzio/novakov-rockedyne%20eav-7%20lmm.png?dl=1 The Extra-Atmospheric Vehicle No.7, also known as Lunar Mobility Module or LMM, is a small space vehicle for a crew...
WORK IN PROGRESS This sheet is going to contain all or at least most of the aircrafts used by the Eastern Coalition of Nations (ECON) in my Cascadiaverse AU. It will include Real World, some Never-Where, and Alternate Universe aircrafts built by the USSR, PRC, CSSR, GDR, and PRP. Most of these plane...