N017RW said:
Sorry I'm 'tapping back in'...
Gotta disagree with ya' Professor (unless a newer manual conflicts), as far as the P2 is concerned, here's a cut/paste from page 23 of the P2 Manual v1.1:
Failsafe works differently depending on the mode the aircraft is in when Failsafe mode is initiated
whether it is in the Ready to Fly or Ready to Fly (non-GPS) mode.
>Ready to Fly (non-GPS) ---- Automatic landing
The flight control system will try to keep the aircraft level during descent and landing. Note that
the aircraft may be drifting during the descent and landing process.
>Ready to Fly (GPS)---- Automatic go home and land
The flight control system will automatically control the aircraft to fly back to the home point and
land.
The confusion is in the terminology. "Ready to Fly (GPS)/Ready to Fly (non-GPS)" is
not a flight mode. It is not synonymous with "GPS/ATTI/MANUAL" It is simply, given that the Phantom is ready to fly, does it have enough satellites to provide a GPS lock or not.
- GPS can lock onto 6 or more satellites = "Ready to Fly (GPS)"
- GPS can only lock onto 5 or fewer satellites = "Ready to Fly (non-GPS)"
As I said, your Phantom will lock onto satellites (assuming you provide enough pre-flight time to allow it to do so) regardless of what
flight mode you are in. You can have your S1 in "GPS ATTI" (top position), and still have the Phantom in "Ready to Fly (non-GPS)" mode because it can't find enough satellites (in which case it will fly as if it was in ATTI flight mode). Likewise, you can be in "ATTI" (middle position), and still your Phantom is in "Ready to Fly (GPS)" mode because it has
access to 6 or more satellites.
See the following flowchart:
http://download.dji-innovations.com/dow ... 1.0_en.pdf
You'll see that, once you're in flight, the
only variable taken into account when failsafe is invoked is how many satellites are available...
not what flight mode you are in.