. American engineer and railroad journal . 2?l3^^ *■ No. 7. -Tonnage Rating Encine Loading Otto Petti AitVAK/OVi SF>££OS. 30 ~3o ~/0 O -t/6 -**o +30 +o Jo go Jfi Fo SoChads- eecT a>eas fifftc. No. Rating Diagram. of V and x when speed is reduced to five miles per hour. Thisenergy added to the average T represents the propelling force,and the sum of the various resistances gives the amount to beovercome by the first two forces. The equation must, of course,be mad6 for the total weight of train multiplied by the variouscoefficients in pounds per ton, as the tract
. American engineer and railroad journal . 2?l3^^ *■ No. 7. -Tonnage Rating Encine Loading Otto Petti AitVAK/OVi SF>££OS. 30 ~3o ~/0 O -t/6 -**o +30 +o Jo go Jfi Fo SoChads- eecT a>eas fifftc. No. Rating Diagram. of V and x when speed is reduced to five miles per hour. Thisenergy added to the average T represents the propelling force,and the sum of the various resistances gives the amount to beovercome by the first two forces. The equation must, of course,be mad6 for the total weight of train multiplied by the variouscoefficients in pounds per ton, as the tractive force is also inpounds; as, for example, to find the weight of train, divide theaverage tractive force by the sum of the coefficients for grade and average speed minus the coefficient for energy due to re-tardation. The weight of the engine and tender must be de-ducted for net loading. Effect of Empty has been suggested from results of experiments that anempty car has about lbs. greater resistance per ton than aloaded car at slow speeds. If we wish to express thi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
