Developing Improved Civil Aircraft Arresting Systems (2009) / Chapter Skim
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Pages 43-45
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From page 43... ...
The equivalence process would require that the new concept constitute an equivalent to the current EMAS design at a mechanical level. It is restricted to replacement materials that are laid out in a geometrically similar bed and produce a dynamically analogous load on the landing gear.
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From page 44... ...
ARRESTOR, though an old code at present, can predict arresting distances for various bed geometries. It models a general crushable foam material and permits the user to specify different compression strengths to be modeled.
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From page 45... ...
For new manufacturers to participate actively in the arrestor system market, an updated predictive code would be necessary. 45 Develop Material • Depends upon material and manufacturer Material Testing • Mechanical Properties • Life-Cycle Properties Initial Feasibility Calculations • Material energy capacity • Estimated arrest distance • Estimated deceleration Small Scale Testing • One-wheel bogey tests • Sample bed cross- ection environmental test Submit FAA Equivalence Report • Present data • Demonstrate EMAS equivalence FAA Approval Integrate Into Design Program (ARRESTOR)
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