LibrePilot Forum

General Category => General Discussion => Topic started by: dubai77 on April 13, 2016, 01:51:53 pm

Title: my quadcopter is going down towards the ground when i fly forward...
Post by: dubai77 on April 13, 2016, 01:51:53 pm

hi,

i have an emax nighthawk quadcopter with cc3d revo and libreplot config..
i kept settings bank 1 pretty standard except the responsiveness which is attitude,rate & rate yaw.
attitude,rate,rate jaw is all in the upper end of moderate.
flight mode is attitude.

any idea how i can manage that my copter is not eating mud, as soon as i push fast forward??

help very much appreciated.

thanks!!
kai.

Title: Re: my quadcopter is going down towards the ground when i fly forward...
Post by: f5soh on April 13, 2016, 02:37:44 pm

This behavior is normal, related to physics, gravity and Thrust forces.

(https://librepilot.atlassian.net/wiki/download/attachments/19890210/Cruise_control_forces.png)

While you go forward / bank quad you need to increase Throttle to maintain the same vertical force.

You can also use the CruiseControl feature to compensate automatically this effect.
https://librepilot.atlassian.net/wiki/display/LPDOC/Cruise+Control

Title: Re: my quadcopter is going down towards the ground when i fly forward...
Post by: cato on April 14, 2016, 10:28:26 am

I think the CruiseControl Setting in Flight Modes tries to compensate parts of this effect, but actually if you are already comfortable with your quadcopter I suggest to use manual mode, it's the best way to learn how the aerodynamics of a multicopter work.  I had some very nice "aha" moments, and it's fun to learn how to keep the copter level in all situations (I am far from that skill).