STO-Activities: (no title)
Activity title:
Ground Vehicle Ride Quality Testing and Analysis with Complex Terrain
Activity Reference:
AVT-380
Panel:
AVT
Security Classification:
NATO UNCLASSIFIED
Status:
Active
Activity type:
RTG
Start date:
2024-01-01T00:00:00Z
Actual End date:
2026-12-31T00:00:00Z
Keywords:
Complex Terrain, Ground Vehicle, Mobility, NextGeneration NRMM, Ride Quality
Background:
Significant effort has been invested by the NATO partners in the development of the next generation of mobility analysis for wheeled and tracked vehicles, as exhibited in the development of a Standardization Recommendation (STANREC) 4813 for Next Generation NATO Reference Mobility Model (NG-NRMM). This effort started with ET-148, continued through AVT-248, demonstrations AVT-CDT-308-1 and AVT-CDT-308-2 and culminated with the approval of the STANREC through AVT-327. STANREC 4813 provides an architecture for simulation methodologies and subsequent delivery of such validated tools to operational planners for the identification of maneuver corridors in support of tactical and combat vehicle deployment. While the basic architecture was established, the methodologies required to accurately quantify the terrain in terms of three-dimensional (3-D) roughness and the impact of that roughness on the vehicle speed-made-good (as affected by ride quality) remain to be established. These methodologies remain critical gaps in the ability to both predict off-road performance of modern vehicles and to establish appropriate design criteria for future systems.
Objectives:
The RTG will have the following objectives.
- Define the proper methods to accurately represent the range of natural terrain random roughness in terms of 2-D and 3-D virtual and physical evaluation environments.
- Define a method to quantify complex vehicle response in terms of ride quality, correlate simulation results with test data, and directly connect vehicle dynamics measurements with ride quality metrics. Identify necessary updates to traditional 2-D 6-watt absorbed power ride quality methodologies.
- Establish the acceptable ride quality performance prediction accuracy level from simulation by describing and summarizing the historical ride quality run-to-run variations from various Proving Grounds and vehicle measurements.
- Describe the effect of vehicle dynamics over 3-D terrain on overall system mobility as represented by speed-made-good metrics.
- Determine the influence of speed variability on ride quality. This will inform requirements for modeling data and validation tests.
- Describe the effects of dynamic deformation of the terrain and low pressure tires on ride quality.
- Determine how vehicle ride quality relates to sensor stability for autonomous platforms.
Deliverables will include:
- A recommended tool/script for common use between NATO nations for military vehicle ride quality and associated speed-made-good performance over 3-D terrain for manned and unmanned ground vehicle platforms
- A recommended set of procedures for physical and virtual evaluations including data acquisition, terrain/test course characterization and method of vehicle operation
- A Final Technical Report
Topics:
The relevant scientific topics to be covered are in the following domains.
- Signal processing in 3-D vibration analysis for vehicle systems in both simulation and physical measurement environments
- Test course input in 2-D and 3-D and the correlation to ride quality metrics
- Modeling and simulation of terrain vehicle systems including assessment of the impact of soft soil deformable terrain
- Terramechanics for wheeled and tracked vehicles
- GIS-aided terrain roughness estimation
Contact:
Open2Partners:
Title:
Created at 18/10/2022 12:00 by System Account
Last modified at 16/05/2024 16:00 by System Account
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