00000nam 2200000zi 4500 9.926151 CaOODSP 20231130151835 m o d f cr |n||||||||| 230815e199010uuoncad ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- DR52-4/7-1990E-PDF Wong, J. Y. author. (Jo Yung) Measurement and characterization of the pressure-sinkage data for snow obtained using a rammsonde and a bevameter / prepared by J. Y. Wong. Measurement and characterization of the pressure-sinkage relationship for snow obtained using a rammsonde and a bevameter Measurement and characterization of the pressure-sinkage relationships for snow obtained using a rammsonde and a bevameter Ottawa : Vehicle Systems Development Corporation ; Ralston, Alberta : Defence Research Establishment Suffield, October 1990. 1 online resource (49 pages) : illustrations, charts text txt rdacontent computer c rdamedia online resource cr rdacarrier Contract report (DRES) ; 72/90 "Prepared for Head, Vehicle Mobility Section, Defence Research Establishment Suffield, Department of National Defence, Canada [...] under Contract Serial No. W7702-9-R127/01-XSG". Digitized edition from print [produced by Defence Research and Development Canada]. Includes bibliographical references (pages 47-49). To examine the feasibility of using the pressure-sinkage data obtained with a Rammsonde as input to the computer simulation model NTVPM-85 for predicting tracked vehicle performance over snow, a series of measurements of the penetration resistance of fresh and preconditioned snow was made using a Rammsonde, and compared with those obtained with a bevameter and Rammsonde cones attached to the bevameter. This report describes the results of the field measurements made using the three types of device, as well as the approaches to the characterization of the pressure-sinkage data obtained. It is found that the data obtained using the Rammsonde, the bevameter and the Rammsonde cone attached to the bevameter are, in general, comparable, considering the possible variations of terrain conditions in the field. It is shown that the pressure-sinkage equations proposed by Bekker could form a common basis for characterizing the data obtained using the three different techniques. Tracklaying vehicles Computer simulation. Snow mechanics. Véhicules à chenilles Simulation par ordinateur. Mécanique de la neige. Defence Research Establishment Suffield, issuing body. Vehicle Systems Development Corporation, issuing body. Contract report (DRES) 72/90. (CaOODSP)9.926097 PDF 1.63 MB https://publications.gc.ca/collections/collection_2023/rddc-drdc/DR52-4-7-1990-eng.pdf DRES-CR-72-090