1686. Proposed SAWE Recommended Practice on Mass Properties Control System for Wheeled and Tracked Vehicle

Paper

Abstract

This document proposes the establishing of an SAWE recommended practice on Mass Properties Control System for Wheeled and Tracked Vehicle. Portions of this document were copied from existing US Military Standards and modified to meet the needs of the surface transportation industry. The mass properties control is accomplished with a dual status system, a weight status (code system) and a mass properties status. The weight status consists of a group, sub-group and detail weight status. Each status consists of eleven (11) columns. These columns identify the code number, name of components, status of weight (estimated layout, pre-release, release verified, total and actual) target weight and difference between present weight and target. The mass properties status consists of major breakdowns of all items in the vehicle that require individual mass properties (weight, center of gravity location and mass moment of inertia0 for determining power requirements of motors, static balance, dynamic balance, dynamic stability, grade ability, flotation capabilities and any other engineering analysis requiring mass properties data. It consists of eight (8) columns identifying the name of the component, weight, center of gravity, location and radius of gyration in 3 axis. In addition to helping keep track of the mass properties (weights, center of gravity location and mass moment of inertias) this document also reports material legend, vehicle wheel loading, vehicle grade ability, prediction of performance based on soil condition, ground stability and buoyancy analysis in case of amphibian vehicles.