These orientations are shown in Figures 3 and 4, respectively. Vechicle Coordinate Systems-Vehicle coordinate systems will be consistent with the orientations specified in SAE J670 and SAE J1594. For a positive 90 degrees rotation about the +z-axis, the coordinate system is right-handed if the +x-axis rotates to the position previously occupied by the +y-axis.Ĥ. For a positive 90 degrees rotation about the +y-axis, the coordinate system is right-handed if the +z-axis, rotates to the position previously occupied by the +x-axis. For a positive 90 degrees rotation about the +x-axis, the coordinate system is right-handed if the +y-axis rotates to the position previously occupied by the +z-axis. If any of the three positive axes is grasped with the right hand with the thumb extended in the positive direction, as shown in Figure 2 for the x-axis, then the curl of the fingers indicate the positive direction for angular motions and moments with respect to that axis.įIGURE 1-THE THREE POSSIBLE CONFIGURATIONS OF A RIGHT-HANDED COORDINATE SYSTEM RELATIVE TO THE THUMB, FOREFINGER, AND MIDDLE FINGER OF THE RIGHT HANDĪ simple method to determine if a coordinate system is right-handed is to rotate the system 90 degrees about any of one of its positive axes using the right-handed screw rule. Positive angular motion and moment directions are determined by the right-handed screw rule.
TO PLACE A DOCUMENT ORDER (724) 776-4970 FAX: (724) 776-0790Ĭopyright 1994 Society of Automotive Engineers, Inc, SAE invites your written comments and suggestions. SAT reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. The use of this report is entirely voluntary, and its application and suitability for any particular use, including any patent infringement therefrom, is the sole responsibility of the user.” SAE Technical Standards Board Rules Provide that: “This report is published by SAT to advance the state of technical and engineering. Note that these three configurations of x, y, z axes always define a right-handed coordinate system independent of the orientation of the Sections 4 and 5 will define standardized orientations of coordinate systems for the vehicle and dummy, respectively. However, once this decision is made then the positive directions of the y and z axes must be as indicated by the corresponding configuration shown in Figure 1. One can choose the positive x-axis to point in the direction of either the thumb, forefinger, or middle finger as shown in the configurations 1, 2, and 3 of Figure 1. Right-Handed Coordinate System-A right-handed coordinate system consists of an ordered set of three mutually perpendicular axes (x, y, z) which have a common origin and whose positive directions point in the same directions as the ordered set of the thumb, forefinger, and middle finger of the right hand when positioned as shown in Figure 1. SAE J2052-Test Device Head Contact Duration Analysisģ. SAE J1594-Vehicle Aerodynamics Terminology
Unless otherwise indicated the latest revision of SAE publications shall apply.Ģ.1.1 SAE PUBLICATIONS-Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. This SAE Information Report describes the standardized sign convention and recorded output polarities for various transducers used in crash testing.Ģ.1 Applicable Publications-The following publications form a part of the specification to the extent specified herein. In addition, recorded polarities for various transducer outputs need to be defined relative to positive directions of the appropriate coordinate systems. Scope-In order to compare test results obtained from different crash test facilities, standardized coordinate systems need to be defined for crash test dummies, vehicle structures, and laboratory fixtures. Submitted for recognition as an American National Standard SIGN CONVENTION FOR VEHICLE CRASH TESTINGįoreword-This Document has not changed other than to put it into the new SAE Technical Standards Board Format.ġ. END OF PREAMBLE (NOT PART OF THE STANDARD) Is the right of all humans to know and speak the laws that govern them.
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In order to promote public education and public safety, equal justice for all,Ī better informed citizenry, the rule of law, world trade and world peace, SIGN CONVENTION FOR VEHICLE CRASH TESTING PREAMBLE (NOT PART OF THE STANDARD)