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 · Grade 6
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 describe what happens to the spin of the spacecraft over the run, and demonstrate this by pointing to a named feature of the plotted evidence.
- 02By the end of this mission, the learner will be able to state that a tumbling spacecraft has to be brought to rest before it can work, and demonstrate this by recording that expectation before the run.
- 03By the end of this mission, the learner will be able to say that these results come from a model rather than from a real spacecraft, and demonstrate this by naming one thing the model does not cover.
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
This is the set-up you will run. It is fixed on purpose, so everyone in the class is reading the same evidence.
Baseline case
Light 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
- Light 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.