page_title: Nacelle
section_title: Development
hierarchical_section_title: Nacelle / Development
caption_attribution_description: English: Front-view silhouettes of the Arado Ar 234 V6 and V8 prototypes
context_page_description: A nacelle is a housing, separate from the fuselage, that holds engines, fuel, or equipment on an aircraft. In some cases—for instance in the typical "Farman" type "pusher" aircraft, or the World War II-era P-38 Lightning—an aircraft's cockpit may also be housed in a nacelle, which essentially fills the function of a conventional fuselage. The covering is typically aerodynamically shaped.
context_section_description: The Nazi-developed Arado Ar 234 was one of the first operational jet aircraft to feature engines mounted in nacelles. This is known as a Podded engine. During its development, the four jet engines were merged from having four distinct nacelles, all of which contained their own landing gear wheel, to two nacelles with two engines each.
  In recent years, General Electric and NASA have developed nacelles with chevron-shaped trailing edges to reduce the engine noise of commercial aircraft, using an experimental Boeing 777 as a test platform. Boeing then developed this nacelle shape for use with its 787 Dreamliner.
caption: Picture showing the development of the Arado Ar 234, merging the four nacelles into two.
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