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--- 184_projects:artemis_last_hope_24 [2023/12/19 21:40] – created dmcpadden
+++ 184_projects:artemis_last_hope_24 [2024/02/23 18:26] (current) – [Main Problem] tdeyoung
@@ Line 1: / Line 1: @@
-==== Project: Artemis's Last Hope ====
+===== Project: Accelerator Emergency =====
-In part thanks to your brilliant work with the lightbulbs and JPL, the Artemis 13 Spacecraft was able to have a successful launch. While on the way to the moon, disaster strikes. Among other things, the air filtration system seems to be malfunctioning. Team leader Melissa Lewis decides Artemis 13 needs to go home ASAP. Just as she gives the order to rotate boosters in order to send the ship home, the crew feels the spacecraft rock violently and warning lights start going off everywhere. The command ship starts to lose all of its power (maybe it had something to do with not being able to get the special tape from the STICKYSTUFF corporation at Lakeview). After a quick investigation, it turns out that the circuit that controls all of the key systems is currently drawing too much current from the battery. You are in constant communication with Austin about the issues you are encountering and a bright but intense intern proposes a risky but possibly brilliant solution. They want to take two batteries from the mostly dead Command Ship and use them to help power the Artemis. In addition to the 230 V main battery, they say they need 140 V ($V_{bat1}$) from the Command Ship battery and only 5 V ($V_{bat2}$) from the backup battery to get them home. From the ship manual you find the following resistances for different components that need to be powered in order to get you all home:
-  * Gauge Lights: $R_{GL}=100\Omega$
-  * Navigation System: $R_{NS}=700\Omega$
-  * Steering/Direction Control: $R_{SDC}=950\Omega$
-  * Engine Cooling System: $R_{ECS}=500\Omega$
-  * Air Filter: $R_{AF}=300\Omega$
-  * Waste Management System: $R_{WMS}=425\Omega$
-{{  184_notes:project7a.png?550 }}
+==== Kick Off Questions ====
+  - What is the loop rule equation? When using the loop rule, what is a "loop"?
+  - What is the node rule equation? When using the node rule, what is a "node"?
+  - What steps do you need to follow to use the loop & node rules to solve a circuit? (Hint: these were in the readings)
+==== Main Problem ====
+With your help, the FTOE staff were able to re-start the hawkion accelerator.  But after a few minutes of operation, the control screen goes blank and a message from Manny the conspiracy theorist appears!  He's convinced that the storms around Lakeview are caused by his strange creatures in the woods, and that the hawkion accelerator is somehow attracting them to Lakeview.  He's hacked the accelerator control system so that the device will malfunction and blow itself up.
+Accelerator operations director Melissa Lewis decides to shut the accelerator down, but just as she gives the order, there's a huge bang and warning lights start going off everywhere.  Several systems start to lose power and there's a risk that the hawkion containment systems may fail, with potentially catastrophic consequences for Lakeview.  After a quick investigation, it turns out that the circuit that controls all of the key systems is currently drawing too much current from the main battery.
+The new intern, Solomon Tobb, proposes a risky but possibly brilliant solution: to dump the hawkion beam into an absorber rather than slowing the particles down gradually.  He wants to take two batteries from another project at the lab and use them to help power the accelerator and the beam dump cooling system at the same time. In addition to the 230 V main battery, he says you can use project I.A.N.'s primary battery ($V_{bat1}$), which delivers 140 V, and its backup battery ($V_{bat2}$), which will provide another 5 V, to keep the accelerator working long enough to steer the particles into the beam dump.
+From the accelerator schematics you find the following resistances for different components that need to be powered in order to dump the beam safely:
+  * Monitor Lights: $R_{ML}=100\;\Omega$
+  * Control System: $R_{CS}=700\;\Omega$
+  * Beam Dump Cooling: $R_{BDC}=950\;\Omega$
+  * Electromagnetic Calorimeter System: $R_{ECS}=500\;\Omega$
+  * Accelerator Magnets: $R_{AM}=300\;\Omega$
+  * Magnetic Containment System: $R_{MCS}=425\;\Omega$
 Will this circuit work without drawing any more than the 0.35 A from the main battery?
+ {{ 184_projects:hawkioncircuit_1.jpg?600 }}
 <WRAP info>
@@ Line 19: / Line 33: @@
 </WRAP>
-Conceptual Questions:
+==== Wrap Up Questions ====
-  - How can you tell if two resistors are in series? Out of current, resistance, & voltage, what would HAVE to be the same for resistors in series? What would be different?
+  - When using the loop rule, how do you decide if you have a voltage gain or a voltage drop for a battery?  What about for a resistor?
-  - How can you tell if two resistors are in parallel? Out of current, resistance, & voltage, what would HAVE to be the same for resistors in parallel? What would be different?
+  - How would you explain the node rule conceptually? (e.g. in plain English to a roommate or someone not in this class)
-  - How would you combine resistors (series or parallel) to decrease the total resistance? What about to increase the resistance?
+  - How would you explain the loop rule conceptually? (e.g. in plain English to a roommate or someone not in this class)
-  - What is the loop rule in circuits? What conservation principle is it related to?
+  - When using the loop and node rules, you end up with more equations than the number of unknowns. How do you pick which equations to use?
-  - What is the node rule in circuits? What conservation principle is it related to?
-  - What steps do you need to follow in order to use loop/node rules?
   - If you have time at the end - you can [[:184_projects:level_up_r| revisit the challenge problem from Week 6]]