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https://hdl.handle.net/11681/20942Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Naval Air Engineering Center (U.S.) | - |
| dc.contributor.author | Burns, Cecil D. | - |
| dc.contributor.author | Grau, Robert W. (Robert Walter) | - |
| dc.date.accessioned | 2017-01-17T21:35:50Z | - |
| dc.date.available | 2017-01-17T21:35:50Z | - |
| dc.date.issued | 1969-08 | - |
| dc.identifier.uri | http://hdl.handle.net/11681/20942 | - |
| dc.description | Miscellaneous Paper | - |
| dc.description | Abstract: This investigation was conducted to evaluate XM20 aluminum landing mat fabricated by Dow Chemical Company, Madison, Illinois. The mat, fabricated from 2- by 12-ft extrusions, was similar to AM2 mat except for minor differences in the cross section of the mat and the method used to attach the end connectors to the mat extrusion. A test section consisting of one clay subgrade item at a strength of 4 CBR was constructed and surfaced with the XM20 mat. The test section was subjected to uniform-coverage traffic representing operations of an aircraft having a 60,000-lb gross weight with a single-wheel main gear assembly load of 27,000 lb with a 30x7.7 tire inflated to 400 psi. Based on the results obtained in this study, it is concluded that: (A.) The XM20 mat will sustain 1600 cycles (188 coverages) of aircraft operations with a 27,000-lb single-wheel load and 400-psi tire inflation pressure when placed on a subgrade having a CBR of 2.5 or greater throughout the period of traffic, or about 1230 coverages of the same loading when placed on a subgrade having a CBR of 4 or greater throughout the period of traffic. (B.) The service life of the XM20 mat on a 4-CBR subgrade is about six times greater than that of standard AM2 mats tested previously at WES on subgrades with a CBR of 4. (C.) General behavior of the mat in this test was greatly improved by the double thickness of the ribs at the end joints of the planks. | - |
| dc.publisher | U.S. Army Engineer Waterways Experiment Station. | - |
| dc.publisher | Engineer Research and Development Center (U.S.) | - |
| dc.relation | http://acwc.sdp.sirsi.net/client/en_US/search/asset/1048766 | - |
| dc.rights | Approved for public release; distribution is unlimited. | - |
| dc.source | This Digital Resource was created from scans of the Print Resource | - |
| dc.subject | Aluminum landing mats | - |
| dc.subject | Landing mats | - |
| dc.subject | XM20 landing mat | - |
| dc.subject | Airfields | - |
| dc.subject | Trafficability | - |
| dc.title | Evaluation of XM20 aluminum landing mat | - |
| dc.type | Report | en_US |
| Appears in Collections: | Miscellaneous Paper | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MP-S-69-39.pdf | 19.11 MB | Adobe PDF |  View/Open |