Speed control during mission in Drone Programming - Step-by-Step Execution

Concept Flow - Speed control during mission

Start Mission

↓

Set Initial Speed

↓

Check Mission Progress

↓

Adjust Speed?

No→Continue at Current Speed

Yes↓

Update Speed

↓

Check if Mission Complete

No↓

End Mission

↩Back to Check Mission Progress

The drone starts the mission with an initial speed, then continuously checks progress to decide if speed needs adjustment, repeating until the mission ends.

Execution Sample

Drone Programming

speed = 5  # initial speed in m/s
while not mission_complete():
    progress = get_progress()
    if progress > 50:
        speed = 3  # slow down after halfway
    move_drone(speed)

This code sets an initial speed, then slows the drone down after it passes halfway through the mission.

Execution Table

Step	progress (%)	Condition (progress > 50)	Speed (m/s)	Action
1	10	False	5	Move drone at speed 5
2	30	False	5	Move drone at speed 5
3	55	True	3	Slow down to speed 3
4	70	True	3	Move drone at speed 3
5	90	True	3	Move drone at speed 3
6	100	True	3	Mission complete, stop

💡 Mission progress reached 100%, loop ends

Variable Tracker

Variable	Start	After Step 1	After Step 2	After Step 3	After Step 4	After Step 5	Final
speed	5	5	5	3	3	3	3
progress	0	10	30	55	70	90	100

Key Moments - 2 Insights

Why does the speed change only after progress passes 50%?

Because the condition 'progress > 50' becomes True at step 3 (progress 55), triggering the speed update as shown in the execution_table.

Does the speed ever increase again after slowing down?

No, once speed is set to 3 at step 3, it stays at 3 until mission ends, as no condition changes it back.

Visual Quiz - 3 Questions

Look at the execution_table, what is the speed at step 2?

A 3 m/s

B 5 m/s

C 0 m/s

D Cannot tell

💡 Hint

Check the 'Speed (m/s)' column at step 2 in the execution_table.

At which step does the condition 'progress > 50' become true?

A Step 5

B Step 1

C Step 3

D Step 6

💡 Hint

Look at the 'Condition (progress > 50)' column in the execution_table.

If the initial speed was 6 instead of 5, what would be the speed at step 1?

A 6 m/s

B 5 m/s

C 3 m/s

D 0 m/s

💡 Hint

Refer to variable_tracker for 'speed' initial value and how it changes.

Concept Snapshot

Speed control during mission:
- Start mission with initial speed
- Continuously check mission progress
- If progress passes threshold (e.g., 50%), adjust speed
- Continue until mission completes
- Use conditions inside loop to update speed dynamically

Full Transcript

This visual trace shows how a drone controls its speed during a mission. It starts with an initial speed of 5 meters per second. As the mission progresses, the program checks the progress percentage. When progress exceeds 50%, the speed is reduced to 3 meters per second to slow down the drone. This change happens at step 3 in the execution table. The speed remains at 3 until the mission completes at 100% progress. The variable tracker shows how 'speed' and 'progress' change at each step. Key moments clarify why speed changes only after halfway and why it does not increase again. The quiz questions help reinforce understanding by asking about speed values and condition checks at specific steps.