舵叶为半平衡式双板流线型结构，可分别向左右回转350舵角。
The rudder blade is semi-balance, double plate, stream-line type. Able to turn to 350 rudder Angle at port and starboard side.
舵偏角与平衡攻角匹配合理，有较高的滑翔增程能力；
Moreover, the rudder deflection angle matches reasonably with the balance angle of attack, so the ERGM has super glide ability.
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