Mission lesson
Stop the tumble.
Stage 1 of 7
Mission
Who you are, what you are finding out, and what success looks like.
Showing stage 1 of 7: Mission
Mission
A spacecraft pushed out of a launcher is tumbling, and until that stops nothing else can happen. No pointing, no charging, no contact. Your team will try two ways of bringing the spin under control and find out that one of them makes things worse before it makes them better.
How do you stop something spinning in space, where there is nothing to push against?
- Your role
- Detumble systems engineer
- Objective
- Compare modeled detumble responses and select the damping strategy that reaches a stable state most effectively.
- Success looks like
- Run both responses, compare rate and settling evidence, make a justified selection, and name what real-hardware testing must still establish.
Learning outcomes · Grades 9–10
What you should be able to do, and the evidence that shows it.
- 01By the end of this mission, the learner will be able to quantify how much the peak spin differs between the two settings, and demonstrate this by reporting the difference with units.
- 02By the end of this mission, the learner will be able to model why damping removes rotation while the proportional term chases a target, and demonstrate this by relating each to the shape of the trace.
- 03By the end of this mission, the learner will be able to test whether each setting meets a stated settling time, and demonstrate this by comparing both results against that time.
Preparation
Before we start
A quick check of what you already know. There is no score.
The idea behind the mission
Two runs, one difference: how hard the controller resists the motion. Same starting spin, same limit on the wheels.
Slowing something down takes the right amount of push
Too little and the spacecraft keeps turning, overshoots and wanders. Too much and it fights every movement. The setting that removes rotation is called damping, and getting it wrong does not just take longer - it can leave the spacecraft spinning faster than it started.
Predict before you run
Before you run anything: will both settings bring the spin to rest? Say what you expect and why.
Will both settings bring the spin to rest? Say what you expect and why.
At least 20 characters — say what you expect and why.
Readiness
This is a local preparation check. It is not Challenge qualification and creates no official attempt.
- Mission objective and success criterion reviewed: not done yet
- Preparation diagnostic answered: not done yet
- Mission theory reviewed: not done yet
- Prediction recorded: not done yet
The set-up you will run
These are the two set-ups you will compare. They are fixed on purpose: if only one thing differs between your runs, anything that changes was caused by it.
Baseline case
Light damping
Candidate case
Strong damping
- Write your prediction first.
- Change nothing except the damping.
- These results come from a model, not from a real spacecraft.
Units stay attached to every result: angles in degrees (°), time in seconds (s), power in watts (W), energy in watt-hours (Wh), battery state in percent (%), and elevation in degrees (°) where available.
Finish every preparation item above first; then this can be confirmed.
Official qualification: false. This acknowledgement stays in this browser.
Operate
Readiness required
Complete every preparation requirement, then confirm readiness before operating the Twin.
Run the light damping first, then the strong damping. The starting spin is the same both times.
Baseline
Light damping
Candidate
Strong damping
Run the baseline first so you have something to compare against.
- Light damping: not run in this session yet
- Strong damping: not run in this session yet
Evidence
Run a Digital Twin case first
The results fill in once the Twin has produced evidence. The decision, limits and knowledge check can be read now.
Read the evidence
Follow each line from the start. Look at the highest point, not only the end.
Run the Twin to produce evidence.
Complete
Readiness required
Finish the required run or comparison, select evidence, make a decision and answer the knowledge check. Then reflect here and finalize.
Completion records the work you did; it does not mean mastery, qualification, or an official grade.
Reflect
What trade-off mattered most in stopping the tumble, and what hardware effect is outside this model?
At least 20 characters. Editing this or any source work after completion invalidates the local record.
Your formative result
Revisit the mission evidence
Formative · not an official grade
No formative evidence has been recorded yet.
Formative band: revisit. Any formative band may complete the mission. Official grade: none.
Finish the required run or comparison, select evidence, make a decision, answer the formative assessment, and complete your reflection.
Recognition
Lane C provides a private local-practice record. Verified recognition remains a separate Platform workflow.
Complete the mission first
Finalize the mission to create a local-practice record on this device.
Finalize the mission to create a local-practice record on this device.
Home mission
Home mission: the swinging door
Push a door and try to stop it exactly half open, using only one hand and one push. Try it gently and firmly. Write down which overshot, which settled, and what that tells you about damping.