The fundamental structure of Aresti
Aerobatic figures are made up by combining basic and
complementary manoeuvres which are grouped into eight basic "families"
(1-8) and one complementary "family" (9) in the CIVA catalogue. Each
manoeuvre is depicted by its Aresti symbol.
Power and Glider aerobatic figures are in separate catalogues - the
latter differs in many details from the power version.
Family 1 Lines and Angles
- Horizontal, 45° & vertical line variations.
Family 2 Turns& Rolling Turns 90°-360° turns erect &
inverted, with optional rolls.
Family 3 Combinations of Lines - more of family 1.
Family 4 (no longer used - was originally Spins on their own,
now incorporated with Family-9)
Family 5 Stall Turns - the four possible variations.
Family 6 Tail Slides - the eight possible variations.
Family 7 Loops and Eights - Round/square/octagonal loops,
split-'S' & 8's.
Family 8 Combinations of Lines, Angles & Loops, Humpty bumps,
Cubans and variations
Family 9 Rolls Slow, 2-point, 4-point, 8-point, flicks and
spins |
|
Understanding the notation
The simplest basic figure in the catalogue is the very first - Family
1, line 1, column 1, usually shortened to 1.1.1 and shown as
figure-1 below. This is drawn as
a solid line (denoting erect flight) with a black dot at one end and a short line at
right angles at the other, denoting the beginning and end
respectively of the figure. To this must be added one or more rolls from Family 9.
Slow rolls are drawn as an arc half way along
the line, concave to the direction of flight and with an
arrow-head denoting direction, or
as a triangle with a short line at the apex for flick / snap rolls. The
number above the dot refers to the figure number in the
sequence. |
| |
|
 |
|
| |
|
a) 1.1.1 |
b) 1.1.1 + 9.1.3.4 |
c) 1.1.1 + 9.9.3.4 |
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In each case above the (same) basic figure has a difficulty or 'k' factor of 2.
The 'k' factor of the complementary figure (the roll) is added to this
to produce a total 'K' for the complete figure thus:
| |
Figure |
'k' |
Total 'K' |
| a)
|
1.1.1 |
2 |
2 |
| b)
|
1.1.1 + 9.1.3.4 |
2 + 8 |
10 |
| c)
|
1.1.1 + 9.9.3.4 |
2 + 11 |
13 |
|
Therefore a judge’s mark of 8 for figure (b) would
give a contestant a score of 80 (8 x 10) from that judge for that
figure; a mark of 7 for figure (c) would give a score of 91 (7 x 13). |
| |
| Inverted and so-called negative
'G' flight is represented by a pecked or dashed line (in red if
possible): |
| |
|
 |
|
| |
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d) 1.1.2 e) 1.1.3 + 9.1.3.2
f) 1.1.4 + 9.10.3.1 + 9.1.3.8 |
In figure-6 the snap and aileron rolls are shown
"opposed" (heads on opposite sides of the line) and so the pilot must
fly them in opposite directions - either right then left, or left then
right, it doesn't matter which.
The total 'k' factors are added together to produce a
total 'K' for the sequence. This may vary in value between (roughly) 60K
for the Beginners sequence to over 400K for an Unlimited program. Part
of the challenge for pilots at different levels is the task of designing
their own "Free" sequence to an exact total 'K'.
The 'k' factor for every basic and complimentary figure
in the Catalogue is derived by a logical set of rules from a series of base values. Discussion of
this is outside the scope of these notes but it is all explained in the FAI Aerobatic Catalogue ('Part II - Method of Evaluation'). |
