The natural flight of the migratory locust, Locusta migratoria L.

摘要: 1. High speed film of naturally flyingLocusta migratoria has revealed gliding in these animals. 2. Glides last from a few milliseconds up to about one third second. 3. The glide always starts when the forewings reach top their stroke; hindwings stop at same instant although they have already started downstroke. 4. The basic wing positions during are described. 5. A lift drag ratio 1.7∶1 been calculated, and minimum sinking rate just over 2 m/s measured. 6. Glides commence with positive body angle 30° but this is rapidly reduced as animal pitches forward. 7. Glides tend end diving, i.e. negative angle. 8. The heralded by moving downwards, followed forewings. Body angles restored value very quickly after glide.