The road load simulator facility located at the NASA Lewis Research Center enables a propulsion system or any of its components to be evaluated under a realistic vehicle inertia and road loads. The load is applied to the system under test according to the road load equation: F(net)=K1F1+K2F2V+K3 sq V+K4(dv/dt)+K5 sin theta. The coefficient of each term in the equation can be varied over a wide range with vehicle inertial representative of vehicles up to 7500 pounds simulated by means of flywheels. The required torque is applied by the flywheels, a hydroviscous absorber and clutch, and a drive motor integrated by a closed loop control system to produce a smooth, continuous load up to 150 horsepower.

  • Supplemental Notes:
    • Presented at Intern. Congr. Of Transportation, Dearborn, Mich., 15-17 Sep. 1980; Sponsored in Cooperation with Vehicle Technology Society and IEEE, Society of Automotive Engineers, and Inst. Of Electrical Engineers.
  • Corporate Authors:

    Department of the Navy

    The Pentagon
    Washington, DC  United States  20350
  • Authors:
    • Sargent, N B
  • Publication Date: 1980

Media Info

  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00326913
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-TM-81574, DOE/NASA/1011-32
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM