Forces of Flight
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Forces of Flight
Meet the four forces
Forces are pushes or pulls. On a flying object, lift acts upwards, gravity pulls downwards towards Earth, thrust pushes forwards, and drag (air resistance) acts against the motion. The forces can change how an object moves. A drone’s rotors help create lift and thrust; its shape and speed affect drag.
- Lift and gravity are balanced, and thrust and drag are balanced.
- Gravity has disappeared because the drone is not falling.
- Drag is pushing the drone forwards faster.
- Thrust always points downwards.
- Lift
- Gravity
- Thrust
- Drag
- Air resistance opposing motion
- Upward force
- Pull towards Earth
- Forward push
Test flight notes
The team makes three short tests in calm air. They change one thing at a time and observe what happens.
Test
What changed?
A
The rotors spin faster; the drone rises.
B
The rotors slow down; the drone begins to descend.
C
A strong headwind blows against the moving drone; it travels more slowly forwards.
- Gravity
- Lift
- Drag
- Thrust
Think like a flight designer
Use what you know about pushes, pulls and changing motion to advise the rescue team.
3 printable pages
Page 1
Page 2
Page 3
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