In the vein of the thread, could you describe the maneuvres, that fit the word aerobatic?
My original response had more to do with the history of the aerobatic regulatory process in the US. In that response the description of a helicopter aerobatic maneuvre is implied by the old Chapter 49. Simply stated, the US FAA considers anything over 90 degrees in pitch or roll in a helicopter to be aerobatic. It prohibits, without approval, any maneuvre not approved by the flight manual or considered to be a classic helicopter maneuvre as contained in the curriculum of most flight schools; and/or anything limited or restricted by the flight manual.
Examples of helicopter maneuvres most authorities, military or civil, consider to be aerobatic are loops, rolls, split-s, hammerheads, 90-90 rapid roll reversals, Waddington flips, Jacques flops, DK's 360 pedal turns in the vertical plan, vertical pitch downs to 90 degrees with or without rolls, inverted flat spins, Lomcevaks, Susie's nightmare and several others - alone and in combination with the others. All of been conducted, with approval, at public displays around the world in all types of helicopters.
To provide further example, at Farnborough, the thrilling (at least for me) military display of the CH-47 display is not considered aerobatic because the aircraft does not exceed 90 degrees of pitch or roll. The AH-64D display is considered aerobatic because it frequently exceeds 90 degrees of pitch and roll. The CH-47 is allowed to fly to a lower floor and is allowed closer to the show line while the Apache must use the aerobatic floor and show line.
30 years ago helicopter aerobatics at public display was new and the interpretation of helicopter aerobatics at different airshows around the world varied considerably. Now, there are few differences in interpretation between Paris, Singapore, Dubai, Lima, FIDEA, Farnborough, or other airshows large and small.
sorry, wrong.
if you wish to scale in the boring part, then go predictable.
A display routine may look 'unpredictable' to the crowd below, but outside of practice or training, the execution of the routine should always be 'predictable'. One of the primary considerations in the qualification of a display pilot at any international airshow is predictability. A pilot whose execution of his or her display routine is 'unpredictable' will not qualify and will not be allowed to display.