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Alternative layouts for 25-30 variants of SEP
2008 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The purpose of this thesis is to study the implications of an up scaling of the gross vehicle weight of the SEP-concept, from today’s 17,5T to 25 and 30T. The SEP is the vehicle concept that BAE Systems offers to the British FRES-project. FRES, Future Rapid Effect System, is the new vehicle system for the British armed forces and 3500 vehicles in different layouts and roles are supposed to be delivered from 2010 and forward. The thesis is a part of a larger study called “Technology scalability study FRES CC TDP”. The scope of the study is to evaluate if the SEP-technology adapts to the requirements of the FRES project, especially when it comes to the E-drive system. The main issue of the thesis has been to evaluate which components of the E- drive system that is affected if the vehicle weight is increased and also decide the new, up-scaled size. For each layout there are one optimized and one fully compliant variant. The fully compliant one fulfils the requirement in the CPS, and the optimised one have been derived through a number of requirement trade-off’s to create the best possible solution based on BAE Systems Hägglunds experiences. To visualize the result of the scaling of the different layouts, CAD-models have been produced in the 3D CAD program CATIA V5. All in all 16 different layouts is presented. The point of departure for the study has been the SEP T2 demonstrator, delivered from BAE Systems Hägglunds to FMV in November 2005. The result of the study is that in the 17,5T weight class the optimized layout is the best due to its ability to combine loading capacity, cost and performance. In the 25T weight class the optimized layout with two engines placed in the front part of the vehicle is the best due to the same reasons stated above. Last but not least the layout with one front mounted engine and front wheel drive is the best in the 30T weight class. This is due to the ability to combine the same performance as the two layouts above with a larger useable volume.

Place, publisher, year, edition, pages
Keyword [en]
Keyword [sv]
URN: urn:nbn:se:ltu:diva-58195ISRN: LTU-EX--08/225--SELocal ID: ec77e73d-d64f-4819-b2ca-1738816f943bOAI: diva2:1031583
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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