File:Ayaks plane from Paul A. Czysz Future Spacecraft Propulsion Systems.png

Scheme of the Ayaks plane from Paul A. Czysz Future Spacecraft Propulsion Systems: Enabling Technologies for Space, Springer, 2006, ISBN 3540231617

Based on the scheme drawn by the authors of the plane for the promotional reasons

This work is copyrighted (or assumed to be copyrighted) and unlicensed. It does not fall into one of the blanket acceptable non-free content categories listed at Wikipedia:Non-free content § Images or Wikipedia:Non-free content § Audio clips, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work: To illustrate the subject in question Where no free equivalent is available or could be created that would adequately give the same information On the English-language Wikipedia, hosted on servers in the United States by the non-profit Wikimedia Foundation, qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights. Fair use //en.wikipedia.org/wiki/File:Ayaks_plane_from_Paul_A._Czysz_Future_Spacecraft_Propulsion_Systems.png true

I believe using the scheme on the Wikipedia servers to illustrate the Ayaks article constitutes fair use as defined by the copyright law of the United States because:

• This is a promotional material released by the developer to illustrate the concept.
• The material is used in the article to discuss the conception
• The quality of the scheme is law, it does not allow to build the aircraft
• Since the aircraft is not built yet and the plans are copyrighted obtaining of free substitutes is impossible

Alex Bakharev (talk) 06:38, 26 December 2007 (UTC)