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Manufacturing of Monocoque
Manufacturing of Monocoque
Published: 2010/03/03
Channel: LURacing2010
Unibody vs Body On Frame - Explained
Unibody vs Body On Frame - Explained
Published: 2015/09/16
Channel: Engineering Explained
Aircraft Construction
Aircraft Construction
Published: 2016/06/05
Channel: Will Liebhaber
What is MONOCOQUE? What does MONOCOQUE mean? MONOCOQUE meaning, definition & explanation
What is MONOCOQUE? What does MONOCOQUE mean? MONOCOQUE meaning, definition & explanation
Published: 2017/07/31
Channel: The Audiopedia
Making a Monocoque - MRT17
Making a Monocoque - MRT17
Published: 2016/02/29
Channel: McGill FSAE
Lamborghini Aventador monocoque
Lamborghini Aventador monocoque
Published: 2011/09/14
Channel: GTBOARD.com
monocoque IMOCA 60 pieds 12 minutes
monocoque IMOCA 60 pieds 12 minutes
Published: 2012/02/06
Channel: Christopher Pratt
Manufacturing of Monocoque of FSAE Cars KIT11 and KIT11e
Manufacturing of Monocoque of FSAE Cars KIT11 and KIT11e
Published: 2011/05/03
Channel: KA-RaceIng e.V.
Monocoque Bau F0711-4
Monocoque Bau F0711-4
Published: 2010/04/14
Channel: RennteamStuttgart
The monocoque: how is it build?
The monocoque: how is it build?
Published: 2017/06/03
Channel: Formula Electric Belgium
Anatomy of the Car - Monocoque
Anatomy of the Car - Monocoque
Published: 2017/06/02
Channel: BLOODHOUND SSC - 1,000 mph car
Allianz Grand Prix Insights: Monocoque.
Allianz Grand Prix Insights: Monocoque.
Published: 2012/06/20
Channel: Allianz
Grand Prix Einblicke – Monocoque
Grand Prix Einblicke – Monocoque
Published: 2013/12/05
Channel: Mercedes-Benz Deutschland
Carbon Fiber Monocoque Mold Production
Carbon Fiber Monocoque Mold Production
Published: 2016/09/16
Channel: Carly Heikkila
Monocoque Frame Chassis
Monocoque Frame Chassis
Published: 2017/08/16
Channel: RJ Automobile
Alfa Romeo 4C: Technology & Architecture - Carbon Chassis
Alfa Romeo 4C: Technology & Architecture - Carbon Chassis
Published: 2013/06/11
Channel: GommeBlog.it: Car & Performance
Converting the seat to a Carbon Fiber Monocoque | Speed art | SVA Design
Converting the seat to a Carbon Fiber Monocoque | Speed art | SVA Design
Published: 2017/05/01
Channel: SVA Design
Mahindra XUV500 - Monocoque Construction
Mahindra XUV500 - Monocoque Construction
Published: 2011/10/14
Channel: Mahindra XUV500
Allianz Grand Prix Insights: Monocoque
Allianz Grand Prix Insights: Monocoque
Published: 2011/07/11
Channel: Allianz
Monocoque manufacturing moive
Monocoque manufacturing moive
Published: 2016/05/06
Channel: saul200
Orbea Monocoque Technology
Orbea Monocoque Technology
Published: 2014/06/20
Channel: Orbea
JBM CITYBUS - Monocoque Structure
JBM CITYBUS - Monocoque Structure
Published: 2015/10/05
Channel: JBM Group
Monocoque IMOCA Banque Populaire VIII - Présentation
Monocoque IMOCA Banque Populaire VIII - Présentation
Published: 2015/01/15
Channel: VoileBanquePop
WR-215 Unveiling
WR-215 Unveiling
Published: 2015/04/11
Channel: Formula SAE
Types of car frames-Monocoque & Body on frame(Ladder Frame):Automobile Hindi
Types of car frames-Monocoque & Body on frame(Ladder Frame):Automobile Hindi
Published: 2017/06/03
Channel: Twizards Automobiles
Monocoque S - Anatec
Monocoque S - Anatec
Published: 2014/06/12
Channel: carpeconnexion
1996 Foretravel U320 Monocoque UNIBODY BUS RARE FIND
1996 Foretravel U320 Monocoque UNIBODY BUS RARE FIND
Published: 2017/11/06
Channel: rvmaxus
O Que é o MONOCOQUE do Carro de FÓRMULA 1™
O Que é o MONOCOQUE do Carro de FÓRMULA 1™
Published: 2017/08/16
Channel: BOTECO F1
MRT16 Carbon Fibre Reinforced Plastic (CFRP) Monocoque Chassis Lay-up
MRT16 Carbon Fibre Reinforced Plastic (CFRP) Monocoque Chassis Lay-up
Published: 2015/06/03
Channel: McGill FSAE
【RC RWD DRIFT】Carbon monocoque chassis 【2駆ラジドリ】
【RC RWD DRIFT】Carbon monocoque chassis 【2駆ラジドリ】
Published: 2017/02/24
Channel: DriftMania RC - Mikasu Works
Firing up the Monocoque Norton
Firing up the Monocoque Norton
Published: 2012/11/11
Channel: Douglas MacRae
DEKRA Sicherheitskonzept Monocoque in der DTM 2012
DEKRA Sicherheitskonzept Monocoque in der DTM 2012
Published: 2012/10/11
Channel: DEKRAAutomobil
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What is SEMI-MONOCOQUE? What does SEMI-MONOCOQUE mean? SEMI-MONOCOQUE meaning & explanation
Published: 2017/09/24
Channel: The Audiopedia
ANATEC MONOCOQUE
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Published: 2010/01/01
Channel: GUI DO
Technologie moulinet Daiwa - Monocoque Body
Technologie moulinet Daiwa - Monocoque Body
Published: 2017/04/12
Channel: Daiwa France
Monocoque laminate test 2013
Monocoque laminate test 2013
Published: 2013/03/04
Channel: SapienzaCorse
kit brushless monocoque Anatec
kit brushless monocoque Anatec
Published: 2016/11/24
Channel: Pascal Malavasi
Structure monocoque ou carrosserie sur cadre
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Published: 2016/07/22
Channel: Toyota Canada Inc.
Monocoque-Prototyp von P.L.A. präsentiert von Juan Gamero - Reisemobil International
Monocoque-Prototyp von P.L.A. präsentiert von Juan Gamero - Reisemobil International
Published: 2015/09/04
Channel: Reisemobil International
SplinterBike: SBQ Monocoque Assembly
SplinterBike: SBQ Monocoque Assembly
Published: 2012/05/19
Channel: ThomoCo
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Published: 2014/09/11
Channel: Yannick Lesellier
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Published: 2016/10/28
Channel: Fish in Design
Monocoque laminieren - Negativform
Monocoque laminieren - Negativform
Published: 2015/05/16
Channel: HorsePower Hannover
How Does A Formula E Monocoque Work?
How Does A Formula E Monocoque Work?
Published: 2017/10/10
Channel: FIA Formula E Championship
Modification moteur brushless anatec monocoque bateaux-amorceurs.com
Modification moteur brushless anatec monocoque bateaux-amorceurs.com
Published: 2016/11/04
Channel: **BATEAUX-AMORCEURS.COM TV**
GFR10 Monocoque construction
GFR10 Monocoque construction
Published: 2010/02/05
Channel: GlobalFormulaRacing
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Démo anatec monocoque
Published: 2009/08/10
Channel: stifflerFDC
Monocoque Quadricopter Carbon Frame
Monocoque Quadricopter Carbon Frame
Published: 2013/07/12
Channel: Maxicopter Maximus
Formula SAE monocoque laminate testing
Formula SAE monocoque laminate testing
Published: 2013/11/06
Channel: Lutosław Bogusz
Ulsab monocoque chassis
Ulsab monocoque chassis
Published: 2017/09/06
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WIKIPEDIA ARTICLE

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Deperdussin Monocoque, with wooden shell construction

Monocoque (/ˈmɒnəˌkɒk, -ˌkk/), also structural skin, is a structural system where loads are supported through an object's external skin, similar to an egg shell. The word monocoque is a French term for "single shell" or (of boats) "single hull".[1] A true monocoque carries both tensile and compressive forces within the skin and can be recognised by the absence of a load carrying internal frame. By contrast, a semi-monocoque is a hybrid combining a tensile stressed skin and a compressive structure made up of longerons and ribs or frames.[2] Other semi-monocoques not to be confused with true monocoques include vehicle unibodies, which tend to be composites, and inflatable shells or balloon tanks, both of which are pressure stabilised. The term is frequently misused, particularly as a marketing term for structures built up from hollow components.

Aircraft[edit]

LFG Roland C.II with wood Wickelrumpf monocoque fuselage
Zeppelin D.I, the first production all-metal monocoque aircraft

Early aircraft were constructed using frames, typically of wood or steel tubing, which could then be covered (or skinned) with fabric[3] such as Irish linen or cotton.[4] The fabric made a minor structural contribution in tension but none in compression, and was there for aerodynamic reasons only. By considering the structure as a whole and not just the sum of its parts, monocoque construction integrated the skin and frame into a single load-bearing shell with significant improvements to strength and weight.

To make the shell, thin strips of wood were laminated into a three dimensional shape; a technique adopted from boat hull construction. One of the earliest examples was the Deperdussin Monocoque racer in 1912, which used a laminated fuselage made up of three layers of glued poplar veneer, which provided both the external skin and the main load-bearing structure.[5] This also produced a smoother surface and reduced drag so effectively that it was able to win most of the races it was entered into.[5]

This style of construction was further developed in Germany by LFG Roland using the patented Wickelrumpf (wrapped body) form later licensed by them to Pfalz Flugzeugwerke who used it on several fighter aircraft. Each half of the fuselage shell was formed over a male mold using two layers of plywood strips with fabric wrapping between them. The early plywood used was prone to damage from moisture and delamination.[6]

While all metal aircraft such as the Junkers J 1 had appeared as early as 1915, these were not monocoques but added a metal skin to an underlying framework. The first metal monocoques were built by Claudius Dornier, while working for Zeppelin-Lindau.[7] He had to overcome a number of problems, not least was the quality of aluminium alloys strong enough to use as structural materials, which frequently formed layers instead of presenting a uniform material.[8] After failed attempts with several large flying boats in which a few components were monocoques, he built the Zeppelin-Lindau V1 to test out a monocoque fuselage. Although it crashed, he learned a lot from its construction, and the Dornier-Zeppelin D.I was built in 1918, and although too late for operational service during the war was the first all metal monocoque aircraft to enter production.[9][10]

In parallel to Dornier, Zeppelin also employed Adolf Rohrbach, who built the Zeppelin-Staaken E-4/20, which when it flew in 1920[11] became the first multi-engined monocoque airliner, before being destroyed under orders of the Inter-Allied Commission. At the end of WW1, the Inter-Allied Technical Commission published details of the last Zeppelin-Lindau flying boat showing its monocoque construction. In the UK, Oswald Short built a number of experimental aircraft with metal monocoque fuselages starting with the 1920 Short Silver Streak in an attempt to convince the air ministry of its superiority over wood. Despite advantages, aluminium alloy monocoques would not become common until the mid 1930s as a result of a number of factors, including design conservatism and production setup costs. Short would eventually prove the merits of the construction method with a series of flying boats, whose metal hulls didn't absorb water as the wooden hulls did, greatly improving performance. In the United States, Northrop was a major pioneer, introducing techniques used by his own company and Douglas with the Northrop Alpha. Few metal aircraft are regarded by some as pure monocoques however, as they use a metal shell reinforced with frames riveted to the skin, although most of the wooden monocoque aircraft also incorporated some frames.

Road Vehicles[edit]

1981 McLaren MP4/1, with a carbon fiber composite monocoque

In motor racing, the safety of the driver depends on the car body which must meet stringent regulations and only a few cars have been built with monocoque structures.[12][13] An aluminum alloy monocoque chassis was first used in the 1962 Lotus 25 Formula 1 race car and McLaren was the first to use carbon-fiber-reinforced polymers to construct the monocoque of the 1981 McLaren MP4/1, and in 1992 the McLaren F1 became the first production car with a carbon-fiber monocoque.[14]

Commercial car bodies are never monocoques but instead most cars use a method called variously unibody/unitary construction/unitary body/chassis or body frame integral construction,[15] which uses box sections, bulkheads and tubes providing most of the strength of the vehicle, while the skin adds relatively little strength or stiffness. The term monocoque is frequently misused when referring to unibody cars.[16]

Armoured vehicles[edit]

Some armoured fighting vehicles use a monocoque structure with a body shell built up from armour plates, rather than attaching them to a frame. This reduces weight for a given amount of armour. Examples include the German TPz Fuchs and RG-33.

Two-wheeled vehicles[edit]

A monocoque-framed motorcycle was developed by the Spanish motorcycle manufacturer, Ossa, for the 1967 Grand Prix motorcycle racing season.[17]

1968 Ossa 250 cc Grand Prix racer

Although the single-cylinder Ossa had 20 horsepower (15 kW) less than its rivals, it was 45 pounds (20 kg) lighter and its monocoque frame was much stiffer than conventional motorcycle frames, giving it superior agility on the racetrack.[17] Ossa won four Grand Prix races with the monocoque bike before their rider was killed during the 1970 Isle of Man TT, causing the Ossa factory to withdraw from Grand Prix competition.[17]

Notable designers such as Eric Offenstadt and Dan Hanebrink created unique monocoque designs in the early 1970s.[18] The 1973 Isle of Man TT was won by Peter Williams on the monocoque-framed Norton John Player Special that he helped design.[19] Honda also experimented with a monocoque Grand Prix racing motorcycle named the NR500 in 1979.[20] However, the bike also featured other innovative features including an engine with oval shaped cylinders, and eventually succumbed to the problems associated with attempting to develop too many new technologies at once. In 1987 John Britten developed the Aero-D One, featuring a composite monocoque chassis that weighed only 12 kg.[21]

The first time an aluminium monocoque frame appeared on a mass-produced production motorcycle was the 2000 Kawasaki Ninja ZX-12R.[22] This was Kawasakis flagship production sportbike aimed at being the fastest production motorcycle.

Single-piece carbon fiber bicycle frames are sometimes described as monocoques however as most use the components to form a frame structure (even if molded in a single piece),[23] these are frames and not monocoques, and the bike industry continues to refer to them as framesets.

Rockets[edit]

Falcon 1 rocket first-stage

Various rockets have used pressure-stabilized monocoque designs, such as Atlas[24] and Falcon 1.[25] The Atlas was very light since a major portion of its structural support was provided by its single-wall steel balloon fuel tanks, which hold their shape while under acceleration by internal pressure. Balloon tanks are not true monocoques but act in the same way as inflatable shells. A balloon tank skin only handles tensile forces while compression is resisted by internal liquid pressure in a way similar to semi-monocoques braced by a solid frame. This becomes obvious when internal pressure is lost and the structure collapses.

See also[edit]

References[edit]

Citations[edit]

  1. ^ Merriam-Webster Dictionary, 2011
  2. ^ Airframe and Powerplant Mechanics Airframe Handbook (Publication AC65-15A). Washington, DC: US Department of Transportation Federal Aviation Administration Standards Division. 1976. p. 4. ISBN 0-16-036209-1. 
  3. ^ Megson, 1972, p.198
  4. ^ Robertson, 1996, pp.1–2
  5. ^ a b Aeronautics, 1912, p.112
  6. ^ FAA, 2001, p.1.2
  7. ^ Terry, 1981, pp.97–117
  8. ^ Terry, 1981, pp.97–117
  9. ^ Terry, 1981, pp.97–117
  10. ^ Grosz, 1998
  11. ^ Haddow, Grosz, 1988 pp. 289–293
  12. ^ [1] Monocoque – Survival Cell, Technical F1 dictionary
  13. ^ [2] Passive car safety, Steven De Groote, 26 Mar 2006
  14. ^ "1994 McLaren F1". 
  15. ^ NAAA Structural Damage Policy dated 1 January 2011, retrieved 29 March 2012
  16. ^ Allan, Rob. The Killeen Cars Accessdate:October 2014
  17. ^ a b c Robinson, James (September 2001). "Santiago Herrero – Spanish Flyer". Classic Racer (91): 35–40. ISSN 1470-4463. 
  18. ^ "8W – Who? – Eric Offenstadt". Forix.autosport.com. Retrieved 2010-10-20. 
  19. ^ "Motorcycle Technology – Future Perfect – Up To Speed". motorcyclistonline.com. Retrieved 17 December 2011. 
  20. ^ "The Unconventional: Adopting a "Shrimp Shell" Frame". Challenging Spirits of Honda. Honda Motor Co., Ltd. Retrieved 2009-12-26. 
  21. ^ "The Aero Bike". Britten Motorcycle Company. Retrieved 2009-06-19. 
  22. ^ "Kawasaki Technology". Kawasaki Heavy Industries Motorcycle & Engine. Retrieved December 18, 2016. 
  23. ^ "Carbon Fiber". Retrieved February 16, 2013. , Velocite-bikes.com
  24. ^ Wade, Mark. "Encyclopedia Astronautica – Atlas". Retrieved 14 November 2011. 
  25. ^ Wade, Mark. "Encyclopedia Astronautica – Falcon 1". Retrieved 14 November 2011. 

Bibliography[edit]

  • Grosz, Peter (1998). Dornier D.I. Windsock Mini datafile # 12. Hertfordshire, UK: Albatros Publications. ISBN 9780948414923. 
  • Haddow, G.W.; Grosz, Peter M. (1988). The German Giants - The German R-Planes 1914-1918 (third ed.). London: Putnam. pp. 289–293. ISBN 0851778127. .
  • Megson, T.H.G. (1972). Aircraft Structures for Engineering Students. London: Edward Arnold Publishers LTD. ISBN 0-7131-3393-7. 
  • Robertson, Bruce (1996). WWI British Aeroplane Colours and Markings. Berkhampstead: Albatros Publications Inc. pp. 1–2. ISBN 0-948414-65-0. 
  • "Monococque definition". Merriam-Webster Dictionary. Encyclopædia Britannica. 26 September 2011. 
  • Schatzberg, Eric (1999). Wings of Wood, Wings of Metal: Culture and Technical Choice in American Airplane Materials, 1914–1945. Princeton, N.J.: Princeton University Press. ISBN 978-0691087733. 
  • Terry, Gerard (1981). "The Development of Dornier Landplanes 1914–1918". Cross & Cockade Great Britain Journal. Society of WW1 Aero Historians. 12 (3): 97–117. 
  • Acceptable Methods, Techniques, and Practices – Aircraft Inspection and Repair (Publication AC 43.13-1B). Washington, DC: US Department of Transportation Federal Aviation Administration Standards Division. 2001. p. 1.2. ISBN 0-16-036209-1. 
  • Unknown (1912). "unknown". Aeronautics (October): 112. 

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