The Stall Turn

The Stall Turn is one of the most graceful aerobatic figures. When flown well it is beautiful to watch. The figure can be divided into a series of sections for judging:

The entry and pull to vertical

  • Is the entry from truly level flight?
  • Part-loops must have constant radii.
  • Is the vertical hit correctly?
  • Is the aeroplane on axis at all times?

The vertical up line

  • Does the line stay vertical?
  • Does the aeroplane stay on axis?

It is common for the aeroplane to roll on the up-line, especially towards the top

The turn itself

  • Is the centre of the turn within one wing? Bridging must be downgraded.
  • Is the turn in the correct plane?
  • Is the aeroplane rolling at all during the turn (torque'ing)?

What is not judged

  • The rate of the turn - slow or fast.
  • The lengths of the up and down lines.

Practical Tips

  • Look carefully to see if the aeroplane is vertical before and after the turn.
  • Check that the wing trailing edges are parallel to the horizon when in the vertical - ie. no yaw or wing-low.
  • Check that the aeroplane does not fall back in pitch before the turn.
  • Look for roll corrections after the turn has been completed.
  • Check that the part-loops are all smooth and of constant radius.

 Next page: Judging criteria explained, and the downgrades to apply.