Abstract

From an analysis of the geometric and airflow parameters that affect the free-floating characteristics of an unstalled rudder during steady sideslips, the effects of these parameters on the rudder pedal-force characteristics have been studied. The results of this study indicate that rudder pedal-force lightenings or reversals are more likely to occur for rudders having large chords or balancing tabs than for rudders having small chords or horn balances. In addition, the results indicate that these undesirable pedalforce characteristics are extremely likely to occur in power-on flight at the sideslip angles at which the vertical tail emerges from the slipstream.

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