The Split S.

This is effectively the reverse of an Immelmann and is a usually a defensive manoeuvre. It's a half-roll followed by a half-loop. The benefit of this is that height is exchanged for speed and a change in direction - a good move for breaking off aerial combat and heading for home! Remember to chop the throttle in the first part of the half-loop otherwise the turning radius is big.

The Split 'S'
Aresti Diagram
Split S

Just as with the Immelmann , the Split 'S' can be modified by introducing a half roll halfway round the loop.

Firstly, half roll inverted, cut the throttle completely then pull on up elevator to start the first quarter loop. When the model is vertical, release elevator and half roll. When the half roll is complete, again pull on up elevator to perform the second quarter loop. As you reach the bottom, increase throttle and level out.

Modified Split 'S'
Aresti Diagram
Split S

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