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Energy, Fuels, and Cost Analyses for the M1A2 Tank: A Weight Reduction Case Study
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
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Reducing the weight of the M1A2 tank by lightweighting hull, suspension, and track results in 5.1%, 1.3%, and 0.6% tank mass reductions, respectively. The impact of retrofitting with lightweight components is evaluated through primary energy demand (PED), cost, and fuel consumption (FC). Life cycle stages included are preproduction (design, prototype, and testing), material production, part fabrication, and operation. Metrics for lightweight components are expressed as ratios comparing lightweighted and unmodified tanks. Army-defined drive cycles were employed and an FC vs. mass elasticity of 0.55 was used. Depending on the distance traveled, cost to retrofit and operate a tank with a lightweighted hull is 3.5 to 19 times the cost for just operating an unmodified tank over the same distance. PED values for the lightweight hull are 1.1 to 2 times the unmodified tank. Cost and PED ratios decrease with increasing distance. Fuel savings from lightweighting do not offset lightweight part production and retrofitting costs for realistic distances. A life cycle refurbishment/refitting analysis of these components was conducted to evaluate part production and operational impact differences between lightweight and heavier components. The cost ratio between lightweight and heavier hull varies (with distance) from 1.58 to 1.96 and the PED ratio ranges from 1.0 to 1.07. These ratios are more favorable than those above, primarily due to the inclusion of upstream life cycle stages for unmodified tanks. Lightweighting decisions usually consider cost and energy tradeoffs, but other logistical and mission-oriented objectives are also critical in deciding to lightweight vehicles, especially military ones.
CitationSullivan, J., Lewis, G., Keoleian, G., and Hart, R., "Energy, Fuels, and Cost Analyses for the M1A2 Tank: A Weight Reduction Case Study," SAE Technical Paper 2020-01-0173, 2020, https://doi.org/10.4271/2020-01-0173.
Data Sets - Support Documents
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- Hart , R.J. and Gerth , R.J. The Influence of Ground Combat Vehicle Weight on Automotive Performance, Terrain Traversability, Combat Effectiveness, and Operational Energy Ground Vehicle Systems Engineering and Technology Symposium 2018
- Gerth , R. and Howell , R. What is a Ton of Weight Worth? A Discussion of Military Ground System Weight Considerations SAE Technical Paper 2017-01-0270 2017 2017 https://doi.org/10.4271/2017-01-0270
- Sullivan , J.L. , Williams , R. , Yester , S. , Cobas-Flores , E. et al. Life Cycle Inventory of a Generic U. S. Family Sedan: Overview of Results of USCAR AMP Project SAE Technical Paper 982160 1998 1998
- Koffler , C. and Rohde-Brandenburger , K. On the Calculation of Fuel Savings Through Lightweight Design in Automotive Life Cycle Assessments Int. J. LCA 15 128 135 2010
- Kim , C. , Wallington , T. , Sullivan , J.L. , and Keoleian , G.A. Life Cycle Assessment of Vehicle Lightweighting: Novel Mathematical Methods to Estimate Use-Phase Fuel Consumption Environ. Sci. & Technol. 49 10209 10216 2015
- Sullivan , J.L. , Lewis , G.M. , and Keoleian , G.A. Effect of Mass on Multimodal Fuel Consumption in Moving People and Freight Transportation Research Part D 63 786 808 2018
- Delmore , A. , Karbowski , D. , Vigayagopal , R. , and Sharer , P. October 23, 2009
- Helms , H. , Lambrecht , U. , and Hopfner 2003
- Hart , R. , Thyagarajan , R. , O’Brien , D. , Littlefield , A. , and Robeson , M. 2019
- Abrams , M. https://en.wikipedia.org/wiki/M1_Abrams April 12, 2018
- GREET2 2017 http://greet.es.anl.gov/greet_2_series
- GREET1 2017 http://greet.es.anl.gov/greet_1_series
- Norgate , T.E. , Rajakumar , V. , and Trang , S. Titanium and Other Light Metals - Technology Pathways to Sustainable Development Green Processing Conference Freemantle, WA 2004 105 112
- http://www.dla.mil/Energy/Business/StandardPrices/ October 26, 2018