Advanced Flight Modes and Features
Return to Home (RTH) and failsafe – are functions built into all Phantom models. These functions work in various ways to assure recovery of your drone w
hen it has low battery or lost connection between your Phantom and the Remote.
RTH is an emergency function – it can save your machine however it can also kick into gear when you least expect it and could cause your Phantom to fly into a tree or other obstacle. The best advice I can give is:
1. Take some time to fully understand the failsafe and RTH functions. Read the manual section and try some of the RTH modes in a large open field.
2. ALWAYS start up your Phantom in an open area and not underneath or near trees or buildings. This will assure a safe return to home (RTH) if the mode is triggered.
3. Don’t take your Phantom to the limit – use LOS (line of sight) flying and your own piloting skills to bring your craft home with some juice left in the battery whenever possible.
There are various types of failsafes – out of range and low battery as well as user-initiated (smart).
1. Out of Range failsafe will automatically kick in the return to home….or land- depending on YOUR setting in the MC Settings –> Advanced Settings
2. Low Battery failsafes – this works differently and depends on user adjusted settings in the Aircraft Battery Screen of the DJI Go App settings.
There are two settings – Low Battery Warning and Critical Battery Warning. At the low battery warning the DJI Go App will give you a warning and the option to cancel out the RTH – but if you do not cancel it, it will initiate.
At the Critical battery warning level the Phantom will not RTH – but just descend and land immediately. With either you can still control the Phantom to a degree with the sticks in order to avoid obstacles.
3. Pressing the RTH button ( a switch on P3 Standard Model) on the Remote and in the DJI Go App will always initiate RTH – hitting it again should turn RTH off again.
If you are an experienced pilot and flying mostly over open land and close-in, you can probably set the low battery at 20% and critical at 10%.
The Phantom 4 will attempt to avoid obstacles on its RTH path if the OA system is turned on. However, the best course of action is to set your RTH altitude high enough to avoid any trees, buildings, power lines or other obstructions in your flying area. [Read more…]