Pneumatic Tyre Characteristics :: essays research papers

IntroductionThe purpose of this technical report is to communicate the results of the Pneumatic Tyre Characteristics laboratory by investigating the effect of cornering take on slip locomote. The technical report is presented to the academic staff of the applied science Systems Department at the Royal Military College of Science, Shrivenham. It is assumed that the reader is richly familiar with the experiment and with the equipment on which it is preformed. Experimental ConditionsFor this particular experiment the hand of the output for the strain gauges are set to 1 as 0 to 8 degrees slip angle is been measured. If smaller angles are measured a larger gain may be required. The total displacement of the aerial tramway that runs along the track is approximately 2.17 meters. However, this may slightly vary in the results, especially with higher slip angles due to the reaction pinch playing on the reversible hydraulic motor that drives the track. For consistency the correspond ing dot for each distance is taken in the results. The current details and chassis of the tested tyre are given. - Manufacture Avon.- Dimension 710 / 22.0 13.- Condition broadly speaking worn all around with patches of the tyre (approximately 60mm in diameter) in worse condition on the inside of the wind. The tyre was tested at 14, 16 and 18 psi pressure. For each test at each angle increment the air valve is pointing downwards purely for consistency as the tyres racing circuit may vary. The increments for each test are as follows.- 0 5 degrees in 0.25 degree increments.- 5 8 degrees in 0.5 degree increments.The data-based equipment is set to output 1000 points of displacement and side force. The computer buzz off rate is set to 50Hz and a total run time of 20sec concluding experimental conditions that should be mentioned include- Before the conduction of the experiment the bank building of the wheel should be checked and adjusted to zero degrees.- The track is make to h ave a sand paper surface. This is important to exert a sufficient side force on the tyre and is in darling condition.- For each experiment, initially slip pads are used under the wheel as the mechanical mechanism used to apply the vertical force is applied at a radius and therefore would give an friendless offset. - A constant vertical load of 1.5kN is applied to the tyre. This load is unploughed consistent by a mechanism which includes a beam and replica balance weights.