What will Young's Modulus be for a 20 mm square bar and with a length of 600mm when it lengthens by 0.5 mm under a load of 45 kN?
FSN 2019FSN 2019
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What is the maximum vertical distance allowed between the lowest part of the front hoop and the lowest part of the diagonal bracing in the front bulkhead support when the diagonal bracing is attached at the top at the FBH?
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Team SFN is considering two solutions for their driver restraining system: Solution A is from a well-known manufacturer based in Europe. Their 2020 system includes an antisubmarine strap, two shoulder straps and two lap belts, all belts have a width of 75mm. The system will be bought new from the manufacturer in 2020 and it meets the FIA specification 8853/2016. Solution B is a second hand system in mint condition, previously used by a rallycross team. This 6- point system has belts with a minimum width of 75mm and it meets SFI Specification 16.5. The manufacturing date on the label reads 01/01/2020. Which solution(s) is/are compliant with the rules and eglible to use at FSN2020?
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Your team set the fastest lap time at the Autocross event with a time of 86,3 seconds on your first and only run. However, on the final scoring sheet your team is listed in fifth place with 73,1 out of 100 points, while the new winner of the event has a corrected elapsed time of 87,1 seconds. How many cones did your team knock Down or Out?
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What is true about the Engineering Design Event?
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Is the use of nylon lock nuts allowed in the in-wheel assembly of your vehicle at FSN2020?
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During the brake test, your driver fails to lock the wheels, but the vehicle comes to a complete stop. After analyzing the results you have the following data: Vehicle speed before braking point: 54 km/h Distance between braking point and complete stop: 15 m, Time between braking point and complete stop: 2s Resultant force during braking: 1350 N What is the mass of your vehicle?
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Two team members are presenting the Business Plan Presentation. After the introduction, team member A forgets all of his text. Luckily, team member B can finish the presentation by herself. After the presentation is completed, the FSN judges have a few questions for the team members. Which statement is correct?
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To save weight, you have decided to replace the steel brackets for the brake pedal mounting for new aluminum ones. Is this allowed by the rules?
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A heat pump works with a pump of 150W and is adding heat to a hot reservoir with a rate of 1000J/s. If that heat pump was used for cooling what would its coeffiency of cooling be? Assume everything works ideally under perfect conditions.
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When seated normally in your car, the driver has a field is vision of 210°. Your lead engineer decided to place the air intake on the left side of your vehicle, therefore the field is vision is different per side: 90° on the left side and 120° on the right side. These field of vision angles are achieved when the driver fully turns their head. What can you say about the field of vision?
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Your team has brought three sets of rims, tow sets of dry tires and one set wet tires to FSN2019. At technical inspection, you present the rim/tyre type combinations: A-1, B-2 and C-3. All are approved by the scrutieers. Befor the endruance event you decide to change your set due to a broken rim in set B. Which new combination are you allowed to use? These details are known:
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One of your engineers has come up with a new design for your power-steering system. The system has less free play compared to your current solution, just 3° compared to your current 5°. Also, the new system is likely to increase performance at the endurance event as the cable-system makes that your drivers need less force to turn the round steering wheel. Are you allowed to use the new system?
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Assume your car has an enclosed chassis structure. What is true about holes?
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You have just found at that your team is de-registered from the competition. On what ground could this have happened?
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What is the minimum spacing between LV and HV connectors (237V) on the same pcb without a cut in the board between the connectors?
FSN 2019
Which statement is right?
FSN 2019
Where inside the accumulator does the IMD have to be attached?
FSN 2019
What is the result of the following equation?
FSN 2019
A team has opted to make use of two identical accumulators in series mounted in the sides of the vehicle. This would have the advantage to have the weight closer to the center at the cost of more complexity. Given that this accumulator has been designed to the following configuration: And using the following battery cell: Manufacturer: NSF Power LTD. Nominal voltage: 3.7V Maximum voltage: 4.2V Minimum voltage: 3.0V Capacity: 8.5Ah Maximum continuous discharge current: 150Ah Maximum continuous charge current: 30A Impedance: 2.3mΩ Assuming a perfectly balanced accumulator with identical healthy cells and an OCV of 3.92V on every cell. What would be the power output with a current drawn of 135A?
FSN 2019
Which of these is true regarding cranking your engine in the pit?
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Skidpad Scoring: Your team‘s best runtime is 6.25s, the overall best time is 5s. How many points do you score? Please use the following format: 12.34
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What is true regarding the Brake Over-Travel Switch (BOTS)?
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Your driver pushes the brake pedal and the accelerator pedal at the same time. Which statement is correct?
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UL94-V0 rating cannot be granted if…
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Concerning aerodynamic devices which statement is not compliant to the rules?
FSA 2019FSA 2019
Your car is the ultimate accelerating machine and is able to lift the front tires off the track during the first section of the acceleration event! Your wheelbase is the required minimum your weight distribution with driver is 70% rear and you are using the latest tires with a friction coefficient of µ=2 (CoF). What is the minimum possible height of your center of gravity of your car to show the mentioned behaviour? Answer in [m], rounded to 0.01
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You do an acceleration run. Your car constantly accelerates with 10m/s^2. After 10 meters your engine die an deliver no power any more. Your car constantly deaccelerates with 0.2 m/s^2. How far do you make it from the start. Please use the following format: 12.34
FSA 2019FSA 2019
Your car has a suspension geometry with zero caster, camber and toe. The tire contact path is assumed to be linear, the contact force distribution is assumed to be triangular (see image). How much steering torque applied on the steering wheel is required to move the steering from the center postion during standstill? Tire width w: 7 inch Control rod arm e: 95mm Pinion meshing diameter d: 34mm Weight of car /w driver 272kg Weight distrubution /w driver: 48% Rear Static tire µ: 1.5 (CoF) g= 9.81 m/s² Answer in [Nm] rounded to .1
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You build an AutoX track on your testing ground. Which elements are not conformant to the rules?
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