Autor: Unknown
Título: The Heinkel He 178, the first jet-powered aircraft.
Data: circa 1939
Origem: An Encounter Between the Jet Engine Inventors. History Office, Aeronautical Systems Division Air Force Systems Command, Wright-Patterson Air Force Base, Historical Publication, 1978, p. 61 (Illustration 10.)
Fonte: https://commons.wikimedia.org/wiki/File:Ohain_USAF_He_178_page61.jpg
Licença: Domínio Público
27-08-1939