Vehicle Design & Propulsion
📋 What it is
Vehicles turn stored energy into motion; good design balances power, weight, drag and efficiency.
🗣️ Coach says
A vehicle is a machine for moving. Its PROPULSION converts stored energy (fuel, battery) into forward motion — engines, motors, jets. Good design balances power against weight, streamlines the shape to cut air DRAG, and maximises efficiency. From bikes to rockets, it’s the same trade-offs at different scales.
🧠 Memory hook
Vehicles convert stored energy → motion. Good design balances power vs weight vs drag vs efficiency.
😂 Giggle
My friend asked me to explain torque.
I said, "Let me put a spin on it."
😲 Whoa!
A streamlined shape matters enormously at speed — a car uses most of its fuel just pushing air out of the way once it’s going fast on the highway.
✅ Quick check: Why do fast vehicles have smooth, streamlined shapes?
Say your answer out loud first — then reveal.
To reduce air drag — a sleek shape lets air flow past easily, saving energy at speed.
Streamlining cuts drag and improves efficiency.
🧪 Try it! (2 minutes)
Hold a flat hand out a moving car window (safely) vs angled — feel drag change with shape.