Clothe the Soldier Prototype Modular Load Carriage System Design Assessment using the APLCS Load Carriage Simulator


  1. Stevenson, J.M.
  2. Bryant, J.T.
  3. Doan, J.
  4. Rigby, W.A.
  5. Reid, S.A.
Corporate Authors
Defence R&D Canada - Toronto, Toronto ONT (CAN);Queen's Univ, Kingston Ont (CAN) Ergonomics Research Group & Clinical Mechanics Group
The objective of this study was to conduct a standardized assessment of the CTS prototype modular (M1) pack on a computerized Load Carriage (LC) Simulator. Specifically, the LC Simulator measured variables which assess load control and load transfer capability of the M1 pack. These aspects of pack design were comprised of several displacement, force, moment and pressure variables that had been validated on previously tested systems where LC Simulator outputs were compared to assessments by experienced users during human trials. A trial consisted of measuring inertial properties and dimensions, loading the pack to a 25 kg payload, mounting the pack and balancing the moments. Five intervals of 10 seconds of data were recorded over a 1200 second period. Output variables were: three dimensional motions of the pack’s center of gravity relative to the person’s motion; forces and moments from a three dimensional load cell at the level of the hips; skin average pressures, peak pressures and skin forces over the anterior and posterior shoulders, and upper and lower back. Pack resistance to flexion/extension, lateral bending and torsion were also evaluated through a set protocol. For load control, the CTS M1 pack ranked as average in side to side (x) and resultant (r), superior in up and down (z), and inferior in transverse (y) relative pack-person motions. All other load control variables were not significantly different from other systems. For load transfer, the M1 pack was super

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Load carriage;load carriage simulator;APLCS;Small Pack;pressure measurement system;compliance tester;CTS;clothe the soldier;modular pack
Report Number
DRDC-TORONTO-CR-2006-303 — Contractor Report
Date of publication
01 Mar 2006
Number of Pages
Electronic Document(PDF)

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