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Abstract

The trebuchet, a medieval siege weapon, can play an important role in stimulating and maintaining interest in engineering and the physical sciences. We discuss our experience with use of a specialty trebuchet design project in engineering education and service learning. In particular, mechanical engineering juniors in a machine design and synthesis course designed and manufactured (based on formal specifications) trebuchets for use by children 5–12 years of age in an indoor museum environment. The entire process entailed brainstorming of ideas, concept selection, dynamic analysis, design for assembly (DFA) analysis, along with manufacture and testing. Throughout the process, feedback was solicited from the community partner, a local technology discovery center, or museum (‘The Works’). In the end, a total of six children's indoor trebuchets were manufactured and installed in the local technology center. The results presented are reproducible for use by other interested instructors.

Keywords

trebuchet design manufacture dynamics

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References

The following two websites include photographs and video-clips of modern trebuchets: http://xenophongroup.com/montjoie/treb_etc.htm, and http://members.iinet.net.au/∼rmine/middel.html.

Crosby

K. M.

Lyons

Pinter

Randolph

, ‘Medieval weapons of war in the physics curriculum’, http://www2.carthage.edu/departments/physics/trebpaper.doc.

Johnson

, ‘Big hurl’, EDN (21 July 2005), p. 30.

O'Connor

, ‘Building a better trebuchet’, Mechanical Engineering (January 1994), 66–69.

Hull

, ‘Perfecting the art of siegecraft’, Military History, 21(5) (December 2004), 46–52.

Contamine

, War in the Middle Ages (Blackwell, Paris, 1984).

Nicholson

, Medieval Warfare (Palgrave Macmillan, New York, 2004).

Denny

, ‘Siege engine dynamics’, European Journal of Physics, 26 (2005), 561–577.

Oakes

, Service-Learning in Engineering: A Resource Guidebook (Campus Compact, Providence, RI, 2004).

10.

The Works, Technology Discovery Center, 5701 Normandale Road, Edina, MN 55424, USA, http://www.theworks.edu.

11.

University of St Thomas, Undergraduate Catalog, 2006–2008 (St Paul, MN, 2006).

12.

Hennessey

M. P.

, ‘A structured activity based approach to teaching machine design’, Proceedings of the ASEE North Midwest Section Annual Conference, Session II-B, Grand Forks, ND, 27–29 September 2001.

13.

Hennessey

M. P.

, ‘Embedding a national collegiate design contest into a course’, ASEE 2004: North Midwest Section Annual Conference, University of Wisconsin, Milwaukee, Milwaukee, WI, 7–9 October 2004.

14.

SolidWorks Corporation, SolidWorks® 2006: SolidWorks® Essentials; Parts and Assemblies, document number PMT0070-ENG (Concord, MA, 2005).

15.

Boothroyd

Dewhurst

Knight

, Product Design for Manufacture and Assembly, 2nd edn (Marcel Dekker, New York, 2002).

16.

Goulet

, ‘Medieval engines of siege warfare and modern engineering tools’, Proceedings of the 2003 American Society for Engineering Education Annual Conference & Exposition, Session 3566.

17.

Siano

D. B.

, ‘Physics of the trebuchet’, http://www.algobeautytreb.com/trebmath35.pdf, (28 March 2001).

18.

‘The algorithmic beauty of the trebuchet’, http://www.algobeautytreb.com (24 January 2006).

19.

Hanselman

Littlefield

, Mastering MATLAB® 7 (Pearson Prentice Hall, Upper Saddle River, NJ, 2005).

20.

Brewer

, Love It or Launch It (St Paul Pioneer Press, St Paul, MN, 1 December 2005).

Design and Manufacture of a Museum-Grade Children's Indoor Trebuchet by Mechanical Engineering Students

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