Il y a une explication ici : http://copter.ardupilot.com/wiki/land-mode/" onclick="window.open(this.href);return false;Tonyco30 a écrit :Exact ! et c'est le principal danger ! J'ai même déjà vu mon cx-20 ré-accélérer et limite re-décoller et c'est là qu'il bascule sur un coté et que les hélices volent en éclatChris42 a écrit :Ce n'est donc pas trop la démultiplication de la commande qui m'inquiète, mais ce sont surtout ces moteurs qui ne s'arrêtent pas tout de suite comme ils le font en Stabilize
"Warning! In any Alt Hold based mode including: Alt Hold, Loiter, Auto, AutoLand or RTL if your copters operation becomes erratic when you are close to the ground or landing (and also if any auto landing procedure results in bouncing or failure to turn off motors properly after landing) you probably have the fight controller situated such that it’s barometer (altimeter) is being affected by the pressure created by the copters prop-wash against the ground.
- This is easily verified by looking at the Altimeter reading in your logs and seeing if it spikes or oscillates when near the ground.
- If this is a problem, move the flight controller out of prop wash effect or shield it with an appropriately ventilated enclosure.
- Success can be verified by flight test and by log results."