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Improved models for runway debris lofting simulations
Imperial College London.
Imperial College London.
Imperial College London.
RISE, Swerea, Swerea SICOMP.
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2009 (English)In: Aeronautical Journal, ISSN 0001-9240, Vol. 113, no 1148, 669-681 p.Article in journal (Refereed)
Abstract [en]

Numerical models used to simulate the lofting mechanisms of runway stones were developed to assess the threat to aircraft structures from runway debris impacts. An inflated aircraft tyre model, which was validated by comparison with experimental indentation tests, showed that over-rolling of stones under typical take-off conditions led to only modest vertical loft velocities of less than 5 m/s. Experiments using a drop weight impactor simulated a section of aircraft tyre descending upon stones. These tests demonstrated that lofting was achieved for impacts with low rubber thickness. However, for impacts with greater rubber thickness, lofting was suppressed. Using more realistic tyre geometries resulted in launches with backspin, but only horizontally along the ground in the direction of the tyre axis. The speed at which launches occurred was proportional to the rate of descent of the tyre section and would consequently determine the loft speeds due to potential asperity lofting.

Place, publisher, year, edition, pages
2009. Vol. 113, no 1148, 669-681 p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-13181OAI: oai:DiVA.org:ri-13181DiVA: diva2:973377
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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