<a href="https://en.wikipedia.org/wiki/Automobiles_Darracq_France" class="extiw" title="w:Automobiles Darracq France">Darracq</a> 25–30 hp (19–22 kW) water-cooled <a href="https://en.wikipedia.org/wiki/Flat_twin_engine" class="extiw" title="w:Flat twin engine">flat-twin</a> aircraft engine, seen from rear end. This is the type of engine that was used in <a href="https://en.wikipedia.org/wiki/Alberto_Santos-Dumont" class="extiw" title="w:Alberto Santos-Dumont">Alberto Santos-Dumont</a>'s <a href="https://en.wikipedia.org/wiki/Santos-Dumont_Demoiselle" class="extiw" title="w:Santos-Dumont Demoiselle"><i>Demoiselle</i> No. 20</a> light aircraft.
Unknown author<span style="display: none;">Unknown author</span>
1909-10-23
<a rel="nofollow" class="external text" href="https://hdl.handle.net/2027/uc1.c2531937?urlappend=%3Bseq=683"><i>Flight</i>, 23 October 1909, vol. I, no. 43, p. 675</a>