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NEVADA
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TEST CENTER

PHONE: (775) 629.2000
FAX: (775) 629.2029

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Vehicle Dynamics, Vehicle Stability

Skid Pads

The main skid pad includes a range of surface coefficients in three parallel lanes, which allows split-coefficient operation of vehicles. The facility is also used for high-speed braking tests and handling evaluations. The primary test surfaces, prepared in accordance with AASHTO and ASTM specifications, include provisions for either wet or dry use and range from wet smooth concrete (SN 25 +5 wet) to dry asphalt for braking tests (SN 85 +5). In addition to tire testing, this facility is utilized for all types of vehicle dynamics testing, ABS and traction control system evaluations, and driver training.

A second vehicle dynamics area is a 45,000-square-foot pad with a variety of surfaces which include: 7,500 square feet of brushed concrete (SN 65 +5); 7,500 square feet of polished concrete (SN 25 +5); and 6,000 square feet of asphalt (SN 50 +5). The remaining area is asphalt (SN 40 +5).

This test area is used for traction, braking and turning ability tests. Precise 30-, 60-, 90- and 120-degree curves are utilized for vehicle handling performance and maneuverability analysis. A sprinkler system is available for controlled water depths necessary to evaluate wet traction, handling and hydroplaning sensitivity. A tether unit is available for paved tether tests.

NATC also utilizes a 200-foot constant-radius paved circle for steady-state cornering evaluations and a section of 12-foot wide, 500-foot-radius curve for ABS brake system certification under California Title 21 and the revised FMVSS-121 requirements. These areas augment the skid pads and add significantly to NATC's vehicle dynamics evaluation resources.

Tilt Table

NATC has added a tilt table facility to its existing vehicle dynamics evaluation assets and capabilities. With a surface area of more than 800 square feet and a lifting capacity of approximately 350,000 pounds, the table can be used to determine static rollover threshold for many types and sizes of vehicles up to and including buses, tractor-trailer rigs, crash-fire-rescue apparatus and ambulances, and heavy equipment used in construction, material handling, mining, and agriculture. The tilt table augments NATC's vehicle dynamics testing capabilities which include handling, roll stability quantification, end limit performance, side slope operation, active suspension development, and MIL-STD and FMVSS certifications. The same types of tests can be conducted on non-vehicular products such as shelters, skid-mounted assemblies, and containerized assemblies and systems.

Designed and built in-house by NATC engineering and fabrication personnel, the tilt table augments NATC's vehicle dynamics testing capabilities which include handling, roll stability quantification, end limit performance, side slope operation, active suspension development, and MIL-STD and FMVSS certifications.

NATC Tilt Table Specifications

Length: 89 feet
Width: 9 feet (expandable to 12 feet)
Maximum Tilt Angle: 60 degrees
Tilt Rate: 0.9 degree/second
Angle Accuracy: +/- 0.1 degree
Net Lift Capacity: 350,000 pounds



 


Nevada Automotive Test Center
a division of Hodges Transportation, Inc.
Post Office Box 234, Carson City, Nevada 89702
775-629-2000
http://www.natc-ht.com

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