HELICOPTER AEROBATIC BASICS PDF

As for vertical lines the attitude of the aircraft is judged, not the flightpath as viewed by a ground observer, which may differ depending on whether the figure is flown into or with the wind, and the wind strength. Loop Inside loop A vertical circle entered from straight and erect level flight. A positive pitching movement is used at all points in the loop to draw the circle, so that the aeroplane canopy is pointing inwards. Outside loop A vertical circle entered from straight and erect level flight, canopy pointing out of the loop.

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Important Points to remember! Choose your flying site carefully - rc airplane aerobatics usually require more airspace than normal flying, so make sure that the area is plenty big enough with no trees, posts or pylons etc.

Altitude is very important with most maneuvers; always give yourself as much space as possible between your airplane and the ground. This way, if you do encounter difficulties, you stand a much better chance of not joining these guys! The type of plane will play a large part in how easily you can fly most aerobatic maneuvers. RC aerobatic airplanes are designed for the job, and if your only plane at the moment is an ultra-stable high wing trainer then you will struggle to fly many maneuvers well, especially if your plane has only rudder and no ailerons.

One final important point; the majority of rc airplane aerobatics are performed in to wind i. This gives maximum lift and airflow over the control surfaces.

Three basic RC airplane aerobatic maneuvers 1. The inside loop: The inside loop is the easiest of all aerobatics to pull off and any rc airplane with elevators and sufficient power is capable of looping. Open the throttle to full power and, at point A in the picture above, pull back on the elevator stick to start a climb - not too suddenly, be gentle but definite. Keep the power on. The airplane will go into a vertical climb, let it keep going until it starts to roll over onto its back - point B in the picture.

At this point, close the throttle and keep holding the elevator stick back, adjusting it as necessary to maintain a tidy circular path. At point C in the picture, level out the airplane by returning elevator to neutral and increase power to exit the loop, flying straight and level again.

In many cases you will need to fly the plane round the loop, rather than just yank back on the elevator and hope for the best! A perfect loop will be a vertical circle with no sideways deviations.

Of course, this takes practice! The outside loop: The outside loop is an inside loop but with the airplane inverted i. How to fly it: Your airplane must be inverted i. The danger here is to remember to use down elevator to get the airplane to climb. Accidentally applying up elevator at this point will send the airplane crashing in to the ground! Note: An outside loop can also be started from the top point B in the above picture , and in this case is called a bunt. You need to reduce power at the start of the dive until the bottom, then increase to full power to complete the second half of the loop.

Practising a bunt takes nerves - you have to commit to flying the plane all the way round, and not chickening out before it reaches the inverted stage! A roll with ailerons is a very smooth maneuver and not too difficult to pull off. How to fly it: Same start as the inside loop; fly straight and level on at least half throttle.

To begin a roll, apply a very small amount of up elevator and left or right aileron a split second afterwards. No need for full power this time, keep the throttle stick where it is throughout the roll. As you apply elevator and aileron, the airplane will start to roll over. Keep the aileron stick in the same position but you will probably have to adjust the elevator to keep the roll tidy. As the plane inverts, release elevator and apply a tiny amount of down elevator when the airplane is fully inverted, this will prevent any loss of altitude during the roll generally speaking Once the airplane is right-side up again, return the sticks to neutral and resume straight and level flying.

How to fly it: As before, begin with a straight and level flight path. At point A in the picture above, apply full power and up elevator, putting the airplane into a vertical climb. Adjust the rudder and elevator as necessary to maintain the climb as vertically and as straight as possible, without going into the beginnings of a loop i.

Then, at point C, apply up elevator to pull out of the dive and then power, to resume straight and level flying. Only experience and practice will tell you how much power you need at the turn. If you want you can use the wind direction to help you perform the stall turn by flying crosswind. Fly at 90 degrees to the wind and turn the airplane in to the wind at the top of the climb. The wind on the fin pushes the plane round for the perfect maneuver! The picture below shows this: So there you have the most basic rc airplane aerobatics.

Take your time and practice them in safety, then move on to the more advanced maneuvers page links listed below. Practising RC plane aerobatics in safety By far the safest way to practice these aerobatics is on an rc flight simulator. You can read more about them through that link, or click any of the product suggestions below to go shopping for sims

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