PALPaper Airplane Lab

6 min read

How Do Paper Airplanes Fly?

Paper airplanes fly because moving air creates lift on the wings while thrust from your throw fights drag and gravity. Understanding those four ideas makes trimming much easier.

Your throw is the engine

A paper airplane has no motor. The energy for flight comes from your arm. That initial push is thrust. As soon as the plane leaves your hand, thrust drops to zero and the plane must manage the energy it already has.

That is why launch angle and speed matter so much. Too soft and the plane stalls early. Too steep and it climbs, loses speed, and falls.

Four forces in a short flight

Lift pushes up (mostly from the wings). Gravity pulls down through the whole plane. Drag slows the plane as air resists motion. Thrust (your throw) starts the motion.

A long-looking glide is usually a careful balance where lift nearly matches weight while drag slowly removes energy.

Why design still matters

Two planes thrown the same way can behave differently because nose weight, wing shape, and dihedral change how lift and drag appear.

Use the Classic Dart for speed comparisons and the Wide Wing Glider for slow-flight observations.

Planes to try with this idea

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