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Wind-Tunnel Tests of the 1/9-scale Model of the Curtiss XP-62 Airplane with Various Vertical Tail Arrangements

Arthur R Wallace, Isidore G Recant

Abstract

The effect of various vertical tail arrangements upon the stability and control characteristics of an XP-62 fighter model was investigated. Rudder-free yaw characteristics with take-off power and flaps deflected were satisfactory after dorsal fin modifications. Directional stability was obtained with all modified vertical tails. Satisfactory rudder effectiveness resulted partly because the dual-rotation propellers produced no asymmetric yawing moments. Pedal forces in sideslips were undesirably large but may be easily reduced.

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Key concepts: Rudder, Wind tunnel, Rotation (mathematics), Airplane, Marine engineering, Engineering, Vertical axis, Scale (ratio)