{{Short description|Type of vehicle structure}} thumb|Semi-monocoque structure inside an aircraft's rear fuselage thumb|ARV Super2 with semi-monocoque fuselage
The term '''semi-monocoque''' or '''semimonocoque''' refers to a stressed shell structure that is similar to a true monocoque, but which derives at least some of its strength from conventional reinforcement. Semi-monocoque construction is used for, among other things, aircraft fuselages, car bodies and motorcycle frames.
==Examples==
Semi-monocoque aircraft fuselages differ from true monocoque construction through being reinforced with longitudinal stringers.<ref>{{Cite web|url=http://www.merriam-webster.com/dictionary/semimonocoque|title = Definition of SEMIMONOCOQUE}}</ref><ref>{{Cite web |url=http://www.aviationchatter.com/2010/01/semi-monocoque-mono-what/ |title=Semi Monocoque, Mono-what? |access-date=2015-10-17 |archive-url=https://web.archive.org/web/20160305223440/http://www.aviationchatter.com/2010/01/semi-monocoque-mono-what/ |archive-date=2016-03-05 |url-status=dead }}</ref> The Mooney range of four seat aircraft, for instance, use a steel tube truss frame around the passenger compartment with monocoque behind.<ref> Mooney article [https://www.planeandpilotmag.com/aircraft/brands/mooney/the-marvelous-mooney-m20/]</ref>
[[File:1973 Norton Monocoque at 1999 TT cropped.JPG|thumb|right|Peter Williams' 1973 John Player Norton 750 with sheet stainless steel semi-monocoque frame, exhibited at Castletown, Isle of Man in 1999]] The British ARV Super2 light aircraft has a fuselage constructed mainly of aluminium alloy, but with some fibreglass elements. The cockpit is a stiff monocoque of "Supral" alloy, but aft of the cockpit bulkhead, the ARV is conventionally built, with frames, longerons and stressed skin forming a semi-monocoque.<ref name="PilotJun85">"Pilot" magazine, June 1985 pages 5-6</ref>
Peter Williams' 1973 Formula 750 TT-winning John Player Norton racer was an early example of a semi-monocoque motorcycle.<ref>{{cite web |url=http://peterwilliamsmotorcycles.com/ |title=Peter Williams Motorcycles | Jpn Monocoque Replica |website=peterwilliamsmotorcycles.co |access-date=22 May 2022 |archive-url=https://web.archive.org/web/20130607173907/http://peterwilliamsmotorcycles.com/ |archive-date=7 June 2013 |url-status=dead }}</ref>
==See also== * Monocoque * Stressed skin
==References== {{Reflist}}
Category:Structural engineering Category:Aircraft components