David Robelen

"TAILSPIN!" "Flat spin!" These and other related terms and phrases are all associated with an important but little understood area of airplane flight. Most of us who fly RC models have performed deliberate tailspins at some time during a sport or fun flying session. Occasionally, when a spin is begun (usually with a new design of nonstandard styling), the model will begin to rotate very rapidly in a nose-high attitude. Generally, all attempts to recover are useless and the model crashes. Rare and unusual? No! Mysterious? Yes! Lest you modelers feel lonely, the designers