IN-FLIGHT BRAKING
In-flight braking requires simultaneous flap and aileron deployment in order to
create drag and slow the aircraft. These complicated mixing functions are often
referred to as Crow or Butterfly. Crow is a flight mode where the flaps deploy and
the ailerons reflex upward. The sailplane is put into a steep dive before crow is
deployed, and even the fastest, most streamlined sailplanes can be landed slowly,
with precision.
To achieve crow functionality, the pre-configured flap-to-aileron mix is used to raise
the ailerons when the flaps deploy. Ensure the mix is configured correctly. See the
Mixing, Back Mixing section for more information.