Paul E. Purser
Published: 1947
Total Pages: 43
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The results of wind-tunnel of a single-engine single-rotation airplane model indicated that, although extreme asymmetry in the horizontal tail showed a reduction in power effects on the longitudinal stability of the model, the particular "practical" arrangement tested did not show marked improvement. Disagreement between tests and analyses indicated the necessity for continued research to determine the characteristics of the slipstream behind various propeller-fuselage-wing combinations. Out-of-trim lateral forces and moments of the unsymmetrical tail arrangements that were best from consideration of longitudinal stability were no greater than those of the normal tail arrangement.