Wheels and Tracks in Snow. Second Validation Study of the CRREL Shallow Snow Mobility Model

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Abstract:

This report presents and analyzes winter mobility data obtained during the winters of 1988 and 1989 at the Keweenaw Research Center, Houghton, Michigan. Traction data 1989 for the HMMWV, HEMTT, SUSV and M60 military vehicles, and the CRREL instrumented vehicle, are presented for hard-packed snow and for undisturbed snow overlaying ice. When these data are compared with an equation for undisturbed snow over soil or packed snow, slight reductions in traction are observed. Resistance data obtained in 1988 and in 1989 are evaluated based on a combined vehicle-snow parameter. An empirical equation based on this parameter and data from all the vehicles, including the CRREL instrumented vehicle using several different width tires, is developed. The resistance data and the empirical resistance equation are compared with the CRREL shallow snow mobility model SSM2.0. The SSM2.0 predicted resistance is within 50 on average. The empirically derived resistance equation is slightly worse. The report recommends further research on vehicle motion resistance in snow.

Author(s):
Richmond, Paul W. ; Blaisdell, George L. ; Green, Charles E.
Author Organization(s):
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Pagination:
0045

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
CRREL-90-13
Task Number(s):
CS
Project Number(s):
4A762784AT42
Monitor Series:
OCE
 Subject Terms
Joint Capability Areas:
JCA_3_Force Application; JCA_3.1.1_Maneuver to Engage; JCA_3.1_Maneuver; JCA_4.6_Engineering; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.6.1_General Engineering; JCA_6.1.1_Wired Transmission; JCA_6_Net Centric; JCA_1.2.7_Experimentation; JCA_6.1_Information Transport; JCA_6.4.1_Secure Information Exchange; JCA_3.2_Engagement
Modernization Areas:
Fully Networked C3
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*MOBILITY, MODELS, RESISTANCE, MOTION, RESEARCH FACILITIES, SOILS, SNOW, WINTER, ICE, TRACTION, INSTRUMENTATION, TIRES, WIDTH, VEHICLES, EQUATIONS, MICHIGAN, SHALLOW DEPTH, VALIDATION
Field(s)/Group(s):
Surface Transportation and Equipment
Keyword(s):
*COMPUTER MODELING, *TRACKED VEHICLES, *GROUND VEHICLE, *SNOW, PE62784A, AST42, WU040, DRAWBAR PULL, INSTRUMENTED VEHICLES, MOBILITY PREDICTIONS, MOTION RESISTANCE, SNOW STRENGTH, VEHICLE TRACTION
Report Date:
1990 Dec 01