What do plants have to do with aircraft?
Plants use the wind to move pollen, spores and seeds which allow for more plants and trees to grow and spread.
- Red maple seeds, called samaras spin like tiny helicopters when they fall from the tree. The wind can carry them farther because of this.
- A dandelion seed has a fuzzy top (called a pappus) that makes a special air bubble above it, helping the seed stay in the air for a long time.
- River birch trees have catkins that dangle like tassels; tiny winged seeds catch breezes.
Engineers study how air moves around wings and rotor blades so they can build the best aircraft.