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 backBack to Set Manoeuvres List    Pirouetting Roll/Flip

Pirouetting Roll / Flip

Description
Two pirouetting flips or rolls should be executed as a travelling manoeuvre flown parallel to the flight line with no hesitation throughout.

Preparation
This should begin by checking your flips and rolls, initially stationary and at a safe height. Take time to develop smooth wellcontrolled stationary flips and rolls. The next step is to introduce a little forward speed as the flip and roll are centred with the aim of producing these manoeuvres not only side-on both ways but nose-in and tail-in. Maintaining forward speed is very important and is mainly achieved with careful cyclic inputs that bias the rotor disc in the chosen direction of motion.

The next major challenge is to attempt a stationary pirouetting flip. If you have not done this before, I would suggest establishing the model in a steady pirouette before introducing your well-practiced flip. The cyclic control requirements for this are that of a ‘rotary’ motion that should be started firmly and stopped after one complete revolution. Take care to quickly remove tail rotor command to stop the pirouette at the same time. Following a successful series of pirouetting flips, try to introduce a little motion before entering and by using your initial practice of moving flips and rolls you have the necessary skills available to retain this motion for the required 2 flips/rolls.

Possible Problems:
These usually centre around incorrect pitch control inputs through the manoeuvre. Accurate, smooth inputs are required to produce best results. Pitch control must also be used in connection with cyclic inputs to maintain motion in the desired direction and to control height through the manoeuvre. this should prove to be a problem, return to stationary pirouetting flip practice at a safe height before slowly introducing motion to give you sufficient time to develop the necessary pitch timings.

It is important not to rush the manoeuvre, but to make a conscious effort to slow down. The aim is to produce a flowing manoeuvre as shown in the diagram that retains both height and speed throughout. Wind direction may pose some problems, especially if you are only able to fly the travelling manoeuvre in one direction. If this were the case, I would recommend practicing with wind from both your left and right sides. With a tailwind, less pitch corrections will be required during the knife-edge positions and with a headwind these corrections will require emphasising to maintain forward speed.

 

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