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Power-to-weight ratio is a measurement of actual performance of any engine or power source. It is also used as a measurement of performance of a vehicle as a whole, with the engine's power output being divided by the weight (or mass) of the vehicle, to give a metric that is independent of the vehicle's size. Power-to-weight is often quoted by ...
Tractive effort can be theoretically calculated from a locomotive's mechanical characteristics (e.g., steam pressure, weight, etc.), or by actual testing with strain sensors on the drawbar and a dynamometer car. Power at rail is a railway term for the available power for traction, that is, the power that is available to propel the train.
Motor velocity constant, back EMF constant. is the motor velocity, or motor speed, [2] constant (not to be confused with kV, the symbol for kilovolt), measured in revolutions per minute (RPM) per volt or radians per volt second, rad/V·s: [3] The rating of a brushless motor is the ratio of the motor's unloaded rotational speed (measured in RPM ...
Traction (mechanics) Traction, traction force or tractive force is a force used to generate motion between a body and a tangential surface, through the use of either dry friction or shear force. [1][2][3][4] It has important applications in vehicles, as in tractive effort. Traction can also refer to the maximum tractive force between a body and ...
Formula E cars are the fastest regulated electric road-course racing cars in the world. [7] Major changes made for the 2022–23 season in the development of the Gen3 car were delivered as software updates directly to the advanced operating system built into the car. [8] The estimated top speed is 322 km/h (200 mph).
Formula E car. A Formula E car is a battery electric open-wheel auto racing car made according to the regulations of the International Automobile Federation (FIA) to take part in the FIA Formula E Championship. Races are mainly driven on closed temporary street circuits designed specifically for this racing category.
A brushless DC electric motor (BLDC), also known as an electronically commutated motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields that effectively rotate in space and which the permanent magnet rotor follows.
Spark-Renault SRT_01E. The Spark-Renault SRT_01E, also known as the SRT01-e (since the 2015–16 season) or the Spark Gen1 (after the introduction of the successive Gen2 chassis), was an electric formula race car designed for the inaugural season of Formula E, in 2014–15. The car was the result of a 10-month collaboration between Spark Racing ...