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Testing

The testing for the RC Baja project will commence spring quarter as a drop test, maximum speed test, cornering test, and a collision test. These tests will be done to ensure the efficiency of the overall design.
 
The drop test consisted of dropping the RC Baja car from 1.5 feet to the floor in Hogue. This test was videoed to determine the deflection of the tie rod. It was done 3 times to determine an average deflection. The requirement was that the tie rod won't deflect 0.125 inches when loaded with 5 lbs. of force. A calculation was done to ensure this goal could be met which is shown in Analysis 15. The deflection was estimated to be 0.317 in. After the test was conducted, the three trials were averaged and found that the deflection of the tie rods from the drop was 0.04167 inches. This shows the deflection design requirement was met. The test was originally to be done outside of Hogue hall on the sidewalk. However, it was changed to Hogue 106 to ensure all broken components could be recovered.
 
The maximum speed test was done by measuring the speed of the RC Baja car over a distance of 25 feet. The speed was determined by taking a video of each trial and finding the time it takes to go the last 7 feet. Then distance/time is then calculated. The requirement for the top speed test was 20 MPH. However, after a top speed calculation was done, the top speed was calculated to be 37.43 MPH. This calculation is shown in Analysis 13. So, in theory, the RC Baja car should meet the set design requirement. After the top speed test was conducted, the three trails averaged to a top speed of 6.6 MPH. This meant the top speed requirement wasn't met and therefore the test was a failure. The test was to originally be done in Hogue 106 (Fluke Lab) but was decided to be done on the apron outside the front of Hogue Hall at CWU. The change of location was done to ensure proper grip to get top speed as Hogue 106 lacked the grip to give accurate testing results.
 
The cornering speed was done by placing down 3 pieces of tape that replicated a 60-degree corner. The yawing was analyzed by videoing the cornering of the car to determine if the yawing is less than 10-degrees. Three trials were completed for both left and right turns during this test. This would ensure an accurate data set. This test took place in the Hogue Hall Fluke lab (Hogue 106) at CWU. Before the test was conducted, an analysis was done to determine the theoretical yawing angle. This analysis is shown in analysis 14. This resulted in a theoretical yawing angle of around 60-degrees. After the test was done, the three trials were averaged for both left and right turns to get the yawing angle. For left turns, the average was 3.25 degrees and for right, it was 2 degrees. This test showed that the yawing angle requirement was met.
 
The collision test consisted of giving the RC Baja car a 20-foot run-up and then having it collide into a wall. This test was done three times to get an average deflection of the tie rods. It was videoed to accurately measure the deflection. This test was conducted outside of Hogue Hall at CWU on the sidewalk to ensure proper traction of the wheels. The theoretical deflection is the same as the drop test shown in analysis 15. The theoretical deflection is 0.317 inches. After the three trials, the average deflection of the tie rods was 0.03125 inches. This shows the test was a success as the design requirement was met. 

Figure 6: Top Speed Test

The video shown above is one of the three trials for the top speed test. It is done outside on the Hogue Hall apron to ensure maximum traction to get accurate top speed data. It is done over a distance of 25 feet with the last 7 feet being recorded for time. The test is discussed above.

Figure 7: Cornering Test

The video shown above is one of the three trials for the cornering test. It is done inside the Hogue Hall Fluke lab (Hogue 106) to ensure conditions that were consistent with the slalom course for the RC Baja competition. It starts with a runup of 25 feet then the car takes a 60-degree corner and the yawing is determined from the video. The test is discussed above.

Figure 8: Drop Test

The video shown above is one of the three trials for the drop test. It is done inside the Hogue Hall Fluke lab (Hogue 106) to ensure if parts were to break, they could be easily recovered. It consists of dropping the RC Baja car from a distance of 1.5 feet and reviewing the video to determine the deflection of the tie rods. The test is discussed above.

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