A development for Europe is this additional small barge board (right arrow) in front of the main one (left arrow), connected to the protruding horizontal turning vane in similar fashion to a solution used by BAR last year.

• 主侧板（左边箭头）前面所增加的这个小侧板（右边箭头）是欧洲站的一个改进，它连接到突起的水平导向叶片上，类似于英美去年曾使用过的一个方案。