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https://hdl.handle.net/11681/20628| Title: | Evaluation and selection of experimental membranes for use as medium-duty surfacing |
| Authors: | United States. Army Materiel Command. Bush, A. J. (Albert Jasper) |
| Keywords: | Dust control Waterproofing Helicopter landing zones Membrane surfacings Prefabricated membrane surfacings Dust mitigation |
| Publisher: | Soils and Pavements Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Description: | Technical Report Abstract: This study evaluates experimental prefabricated membranes for use as expedient dust-proofing and waterproofing mediums for current Army helicopters. Laboratory and skid tests were conducted on nine membrane candidates at the Waterways Experiment Station (WES) to select a medium-duty membrane that meets the Department of the Army approved Qualitative Materiel Requirement (QMR) for Prefabricated Airfield Surfacings. Skid tests determined the most critical helicopter with respect to locked-wheel braking or skid resistance. The effects of the UH-1, CH-54A, and CH-54B helicopter landing gears were evaluated. The landing gear of the CH-54A with a single-wheel load of 17,700 lb and 95-psi tire-inflation pressure was selected as the most critical. Skid tests were conducted to simulate the locked-wheel braking effect of the CH-54A on each of the nine membranes. The results obtained in this study showed that (A.) three of the membranes possessed the strength and durability required to support any helicopter requirements, (B.) of these, only one membrane, a two-ply 13-oz-per-sq-yd nylon construction, met the weight requirements of the QMR, and (C.) the coating should be neoprene rather than hypalon. It is recommended that a two-ply 13-oz-per-sq-yd nylon neoprene-coated membrane be engineer design tested as a medium-duty membrane. NOTE: This file is large. Allow your browser several minutes to download the file. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/20628 |
| Appears in Collections: | Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TR-S-75-8.pdf | 38.35 MB | Adobe PDF |  View/Open |