Technical Reports

High Performance, High Cube Covered Hopper Program Base Car Dynamic Performance Tests: Volume 3 - Curving

  • 01
  • Apr
  • 1984
AUTHOR: Semih F. Kalaycioglu, Ahmet V. Arslan, Swamidas K. Punwani
OFFICE: RPD
REPORT NUMBER: R-572
SUBJECT: Facilities & Test Equipment
KEYWORDS: Angle of Attack, Car Dynamics, Curve Entry, Curve Exit, Spiral-Twist, Vertical and Lateral Wheel Loads
ABSTRACT: This report describes the curving performance tests of a 4750 cubic foot capacity high cube covered hopper car. This base car was tested on curves of up to 7.5 degrees on test curves at the Transportation Test Center in Pueblo, Colorado. The tests included operations in both the clockwise and counterclockwise directions, and at different speeds, including balance, overbalance and underbalance. The test results established the curving performance of the base car, in accordance with the AAR Performance Guidelines, established for use in the High Performance, High Cube Covered Hopper Car Program. Lateral and vertical wheel loads, L/V ratios and angle-of-attack results are presented for the curving, curve entry/exit and spiral-twist tests.
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