WYVERN S. MK.4 VW. 884 (PYTHON 3) PRELIMINARY DIRECTIONAL HANDLING ASSESSMENT
AEROPLANE AND ARMAMENT EXPERIMENTAL ESTABLISHMENT BOSCOMBE DOWN (UNITED KINGDOM)
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Tests on Wyvern S Mk 4 VW.884 showed that rudder overbalance was present under sideslip on the climb at 165 knots IAS both with the standard Mk 4 fin and rudder and with several modifications. The tests were made at about 10, 000 ft with a torquemeter reading of 190 lbsq in. A Hussenot A.20 continuous trace recorder was used to record rudder force and angle, height, and indicated air speed. The overbalance characteristic makes the aircraft unsuitable in its present form. Higher foot forces in the out of trim dive should be avoided.
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- Marine Engineering
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