Raptor 30 drops

[tgg]

Can anyone help , I have just managed to get the raptor 30 to hover for about a full tank within a 1 M (meter not mile)radius, but I have a problem when I turn the nose or move forward or back the raptor sometimes just drops down to the floor the lifts back into the aur, I am only overing about a foot at the moment but do not want to go high just incase. I am on fairly level gound so I know that the ground fect will be an influence on the heli moving lightly but can not understand why is should drop (not heavily). I am hovering at 1/2 throttle @ 5 degrees pitch.

[mackem54]

hi there tgg, i am at about the same place in the training stakes as you,but due to the weather havnt been out for a long time.now im no expert but i have tried the same thing as you with the same results ,turning the heli it drops toward the floor,as ive said i havnt been flying but i have put a lot of time on the sim,i noticed when i turn in h/h it drops but when i turn in normal it doesnt drop , i am not saying this is the solution but this is what i found i am sure there will be alot of more experianced fliers out there who will help you,
regards mackem.

[G-DAVE]

Hi guys
Make sure when you are using the tail rotor control that your not unconsiously moving the collective at the same time as they are both on the same left hand stick assuming your flying mode 2.
Dave

[tgg]

Thanks for the advice, but I am sure I am not changing the throttle position when working the rudder, also I have not got a HH gyro its the TG-8000

[G-DAVE]

Never mentioned your gyro - If it's not interaction - then when it drops add pitch !!!!!!!! ops:
Dave

[Stuart]

A couple of things I think to consider.

1. If using a R/H rotating main blades as most are, the torque of the blades want to turn the heli left, thankfully your tail rotor adds pitch to stop this and keeps the heli's heading straight. As you you input left rudder this will have less load effect on the engine as the torque already runs in this direction and the heli will raise as the head pick's up a little speed. Conversly going in the other direction the head speed will drop slightly as the engine comes under a little extra load as the tail is now running against the torque and this will make the heli drop slightly.

To overcome this you add into your TX some tail>throttle mixing only a very small start with 5%, this will help to counter the loading/unloading on the engine and help maintain a fairly steady hivering height.

2. Any turning or transition between hover and forward/backward flight will make the heli drop until you add some pitch too compensate. This is due to the air flow from the blades no longer being directly underneath the heli but offset in the opposite direction of which you wish to travel.

[Janek]

WIND

Picture the heli, nose into the wind direction. Now, imagine what happens when it starts wandering backwards, towards you, what do you do ?, will you give it some forward elevator of course. But what effect does this have on the heli ?, it lowers the forward edge of the rotor disk. So the wind is now "pushing" down on the rotor disk and the heli descends (physically this description is wrong, but the overall picture of events works).

OK, now what happens if the opposite situation occurs, i.e. that the heli starts wandering away from you ?, you obviously add some back elevator, which in turn tilts the rotor disk up at the front. The wind gets upder the rotor disk and the heli rises.

Is it clearer now ?

Don't forget what I said earlier, the above descriptions are not "physically" correct, but it is a simple, understandable, explaination of what's causing the rise and fall of you heli.

The solution is to "fly the pitch", i.e. add a little pitch as it falls, remove some when it rises, the art is predicting when and how much , that comes with practise