TRUCK DESIGN OPTIMIZATION PROJECT (TDOP) PHASE II TYPE I TRUCK PERFORMANCE TEST, TEST RUN 002A

Sixteen field tests were performed by Wyle Laboratories, Colorado Springs to measure the performance characteristics of a Type I freight car truck. Reel 2 contains test run 2a. (When more than one try was required to obtain a successful run it is denoted with a letter suffix.) A pair of ASF ride control trucks were placed under an empty 100-ton open hopper carbody. New AAR 1/20 wheel profiles were used. The object of the test was to provide performance data during curve negotiation. The test was performed on February 11, 1980 on Union Pacific track near Las Vegas, Nevada. Ninety-six channels of data were acquired to measure car speed, automatic location detection, lateral/vertical wheel-rail forces, wheel/rail angle of attack, axle rotation position, accelerations and displacements at critical points on the truck and carbody. This test run was made over mainline curved track between Arden and Sloan near Las Vegas, Nevada. The test consist was run through a series of eleven left and right curves ranging from 2 to 6 degrees of curvature. The test was run in an uphill direction with a grade of approximately 1%. The test was run at speeds 10 mph below equilibrium speed for each curve in the test zone. Actual speed varied from 24 mph to 38 mph for the test run.

• Supplemental Notes:
  • Source tape is in ASCII character set. Character set restricts preparation to 9 track, one-half inch tape only. Identify recording mode by specifying density only. Call NTIS Computer Products, if you have questions. Price includes documentation, PB81-172157.
• Corporate Authors:

  Federal Railroad Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Bakken, G
  • Bates, E
  • GIBSON, D W
• Publication Date: 1980-3-13

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Curved track; Datasets; Force; Freight cars; Hopper cars; Magnetic tapes; Main lines; Modems; Railroad rails; Railroad tracks; Railroad wheels; Research projects; Sets; Speed measurement; Train track dynamics; Trucks; Undercarriages; Vehicle design; Vehicle dynamics; Velocity; Wheels
• Identifier Terms: Union Pacific Railroad
• Old TRIS Terms: Freight car dynamics; Medium speed; Type i trucks
• Subject Areas: Design; Motor Carriers; Railroads; Research; Vehicles and Equipment;

Filing Info

• Accession Number: 00337255
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FRA/DF-81/006
• Files: NTIS, TRIS, USDOT
• Created Date: Aug 15 1981 12:00AM