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https://hdl.handle.net/11681/30367Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Rush, Edgar S. | - |
| dc.contributor.author | Green, Charles E. | - |
| dc.contributor.author | Mobility and Environmental Systems Laboratory (U.S.) | - |
| dc.date.accessioned | 2018-11-19T20:12:31Z | - |
| dc.date.available | 2018-11-19T20:12:31Z | - |
| dc.date.issued | 1974-01 | - |
| dc.identifier.govdoc | Technical Report M-74-1 | - |
| dc.identifier.uri | http://hdl.handle.net/11681/30367 | - |
| dc.description | Technical Report | en_US |
| dc.description.abstract | This report was prepared.at the U.S. Army Engineer Waterways Experiment Station (WES), Vicksburg, Mississippi, under the sponsorship of the U. S. Army Aviation Systems Command, St. Louis, Missouri. Certain portions of the report were abstracted and summarized from other publications; these portions are identified by appropriate references. The helicopter tire tests were conducted in August-September 1973 by personnel of the Mobility Investigations Branch (MIB),'Mobility Systems Division (MSD), Mobility and Environmental Systems Laboratory (MESL), under the direct supervision of Mr. C. E. Green. The total program was under the general supervision of Messrs. E. S. Rush, Chief, MIB, A. A. Rula, Chief, MSD, and W. G. Shockley, Chief, MESL. The report was prepared by Messrs. Rush and Green. Directors of the WES during conduct of the tests and preparation of the report were BG Ernest D. Peixotto, CE, and COL G. H. Hilt, CE. Technical Director was Mr. F. R. Brown. | en_US |
| dc.description.sponsorship | Sponsored by U. S. Army Aviation Systems Command | en_US |
| dc.description.tableofcontents | FOREWORD-iii CONVERSION FACTORS, BRITISH TO METRIC AND METRIC TO BRITISH UNITS OF MEASUREMENT-vii SUMMARY-ix PART I: INTRODUCTION-1 Background-1 Purposes of Study-2 Scope of Study-3 PART II: REVIEW.OF THE CURRENT STATE-OF-THE-ART OF DETERMINING AIRCRAFT GROUND-FLOTATION REQUIREMENTS AND VEHICLE CROSS-COUNTRY PERFORMANCE-4 Systems for Measuring Soil Strength -4 Current Method of Determining Ground-Flotation Requirements for Aircraft-7 Current Method of Determining Cross-Country Performance of Ground Vehicles-13 PART III: TESTS WITH THREE HELICOPTER TIRES ON FINE-GRAINED SOILS-16 Test Program -16 Results of Single and Dual Tire Tests in Soil Bins-18 Tire-Clay Numeric for Single Tire Data Consolidation- 21 Estimating Towed Motion Resistance of Helicopters-21 from Single and Dual Tire Tests-21 Results of Tricycle Load Cart Tests-22 Towed Motion Resistance-Rating Cone Index Performance Curves -23 Application of Drawbar Pull Capability of Selected Ground Vehicles to Towing Helicopters-24 Sustained Versus Initial Motion Resistance -25 PART IV: PREDICTIONS OF HELICOPTER PERFORMANCE IN THE WEST GERMAN TRANSECT-26 Frequency of Occurrence of Terrain Factors in West German Transect -26 Performance Estimates for Single Terrain Factors -27 Performance Estimates for Multiple Terrain Factors -28 PART V: CONCLUSIONS AND RECOMMENDATIONS-30 Conclusions-30 Recommendations-30 LITERATURE CITED FIGURES 1-42 TABLES 1-5 APPENDIX A: SOIL-VEHICLE MODELS CONTENTS Introduction -A1 WES VCI Model -A2 WES Mobility Numeric Model (Wheeled Vehicles Only) -A20 APPENDIX B: ENVIRONMENTAL DESCRIPTION OF WEST GERMAN TRANSECT Location • • • • • • Physiography •• Drainageways Soils Land Use Weather and Climate Road Network Towns and Villages FIGURES Bl-B4 TABLES Bl-B3 | - |
| dc.format.extent | 148 pages / 20.23Mb | - |
| dc.format.medium | PDF/A | - |
| dc.language.iso | en_US | en_US |
| dc.publisher | U.S. Army Engineer Waterways Experiment Station | en_US |
| dc.relation.ispartofseries | Technical Report (U.S. Army Engineer Waterways Experiment Station);no.M-74-1. | - |
| dc.rights | Approved for public release; distribution is unlimited | - |
| dc.source | The ERDC Library created this digital resource using one or more of the following: Zeta TS-0995, Zeutcehl OS 12000, HP HD Pro 42-in. map scanner, Epson flatbed | - |
| dc.subject | Helicopters | en_US |
| dc.title | Helicopter Movement on Unimproved Terrain | en_US |
| dc.type | Report | - |
| Appears in Collections: | Technical Report | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Technical Report M-74-1.pdf | 20.72 MB | Adobe PDF |  View/Open |