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| 184_projects:austin_snafu [2022/01/04 15:56] – created dmcpadden | 184_projects:austin_snafu [2022/08/16 19:36] (current) – dmcpadden | ||
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| - | ==== Project | + | ==== Project: Austin, we have a snafu ==== |
| The Artemis 13 is almost home but before they complete their final landing sequence the team needs to launch a top-secret deep space probe that will be piloted by Johnny 5 into the eye of the storm over Lakeview. However, the power supply for the whole ship is running critically low, so you are now only running the ECS to maintain oxygen in the command module. You have to somehow power up the probe to complete your mission. You no longer have communications with Austin. | The Artemis 13 is almost home but before they complete their final landing sequence the team needs to launch a top-secret deep space probe that will be piloted by Johnny 5 into the eye of the storm over Lakeview. However, the power supply for the whole ship is running critically low, so you are now only running the ECS to maintain oxygen in the command module. You have to somehow power up the probe to complete your mission. You no longer have communications with Austin. | ||
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| That propulsion system consists of the primary burners and the cooling system, which have a total resistance of 65 $\Omega$. | That propulsion system consists of the primary burners and the cooling system, which have a total resistance of 65 $\Omega$. | ||
| The primary burners require a short burst of 200 J to power-up. | The primary burners require a short burst of 200 J to power-up. | ||
| - | The cooling system requires a short burst 300 J to power-up. | + | The cooling system requires a short burst of 300 J to power-up. |
| You need to be able to deliver different amounts of power to this module; however, you are growing concerned that the power supply the probe has access to of 100 V may not be sufficient to power these probe systems. You manage to find some additional batteries onboard (three 10 V batteries from the supply room) to use if you need them. | You need to be able to deliver different amounts of power to this module; however, you are growing concerned that the power supply the probe has access to of 100 V may not be sufficient to power these probe systems. You manage to find some additional batteries onboard (three 10 V batteries from the supply room) to use if you need them. | ||
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| * Understand what happens when capacitors are in parallel or in series | * Understand what happens when capacitors are in parallel or in series | ||
| * Understand how capacitors and resistors combine in a complex circuit | * Understand how capacitors and resistors combine in a complex circuit | ||
| + | * Design a circuit that can charge/ | ||
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| + | Conceptual Questions: | ||
| + | - Where did you place switches in your circuit? What positions do they need to be in to charge & discharge the capacitors? | ||
| + | - How did you limit the current to be under 2 A? | ||
| + | - Why is it important to have a current limit in circuits? (What happens to wires if there is a very high current?) | ||
| + | - If capacitors are combined in series does that increase or decrease the total capacitance? | ||
| + | - Draw the I vs t, V vs t, and Q vs t graphs for charging & discharging the capacitors. | ||
| + | - What assumptions did you make in this problem? | ||
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