<p>Diagram of a <a href="https://en.wikipedia.org/wiki/Combined_gas_and_gas" class="extiw" title="en:Combined gas and gas">COGAG</a> propulsion system.<br>
Please note that the arrangement of the gearing and clutches is just schematic to show the working principle.
(Own work)
</p><p><a href="https://en.wikipedia.org/wiki/Combined_gas_and_gas" class="extiw" title="en:Combined gas and gas">en:Combined gas and gas</a>
</p>
<a href="https://pl.wikipedia.org/wiki/COGAG" class="extiw" title="pl:COGAG">pl:COGAG</a>
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Alureiter~commonswiki" title="User:Alureiter~commonswiki">Alureiter~commonswiki</a> assumed (based on copyright claims).
3 December 2005 (original upload date)
No machine-readable source provided. Own work assumed (based on copyright claims).