Judging:  Stall Turns - page 1

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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.

Back - Radii in looping segments BAeA Judging Notes v10 - 2012 Next - Stall Turns page 2
 

 

 

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