The style and type of stunts or 'manoeuvres' flown vary greatly in both difficulty and intesity. Basic gentlemanly aerobatics focus primarily on the sensations you feel in the cockpit and are generally just good fun. Competition and Air Show aerobatics are more concerned with the external appearance of the aircraft to a judging panel or crowd. Competition aerobatics focus on precision flying and positioning, this is the most physically and cognitively challenging of all aerobatic flight, involving huge G-Forces on the body whilst demanding the upmost concentration on piloting your aircraft. Air show aerobatics whilst not so challenging allow pilots to show off thier skills and aircraft in a less precise and more freestyle manner, making the aircraft appear to be 'out of control' whilst ensuring you do exactly the opposite.
This is the force experienced by your body throughout aerobatic flight measured in multiples of the force of gravity. Whilst you sit there reading this you are currently experiencing 1 G, or 1 x the force of gravity. Under a 2 G positive load you would feel twice as heavy as you do now, lifting your arms and legs, even keeping your head up becomes dificult as they now appear to weigh twice as much. Zero G is the equivalent of falling of floating in outer space, it feels like the initial drop of a skydive or bungy jump. If we were to push through 'Zero G' into the other side and out accelerate gravity, we would in effect reverse the effect of gravity and experience 'Negative G'. Under negative G the body is subject to very large and intense pressures and is not for the faint of heart. The EXTRA 300 is certified for flight at up 10 positive and 10 negative G's.
The Aresti code is a type of short hand or hieroglyphics used by pilots to represent the flown manoeuvres in a written form. This allows aerobatic pilots to sumarise thier routines into small graphical representations that can be mounted in the cockpit and referred to in flight without consuming valuable cockpit space.