Inav: [REQUEST] Manual (Emergency) Landing for Wings and Copters

[b14ckyy]

Current Behavior

Emergency landing is only triggered in case of sensor failure during Failsafe or as Landing at home point.

Desired Behavior

We should be able to trigger a GPS assisted landing with a switch

Suggested Solution

Following Scenario:

• A long range pilot realizes that the battery won't last for the way back
• pilot searches for a save landing spot like a open field and flies over it
• pilot triggers landing and plane will go into circle down with throttle cut to zero till it touches ground and disarms, Copters will fast descent at emergency landing descent speed
• maybe only uses throttle on a wing to compensate for strong wind drift above a specified threshold
• failsafe must be ignored in this state as in long range the pilot will likely loose connection before touchdown
• after landing, pilot can use telemetry data to find the plane in a very specific area

Who does this impact? Who is this for?

All Long range pilots that touch the limit of their battery capacity. Also pilots that maybe have a faulty battery.

Additional context

This feature would be a huge security benefit as the pilot is able to control where the plane or copter will go down in a unpopulated area instead of letting it glide uncontrolled if the FC looses power too. A manual emergency landing won't be possible on long range as the connection will likely be lost at low altitudes and then the craft will likely failsafe and try to climb again.

Setting Failsafe to LAND is no option on long range as the RTH should still work if there is no issue with the battery.

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[wx4cb]

silly question, but if they know it wont last all the way back and they search for a field etc, why can't they put the aircraft down manually ?

[datamann]

This sounds like a good idea. If you try to take the plane down manually and looses radio connection the normal failsafe will trigger which is normally RTH and that would not be good thing if you are low on battery.

[b14ckyy]

This sounds like a good idea. If you try to take the plane down manually and looses radio connection the normal failsafe will trigger which is normally RTH and that would not be good thing if you are low on battery.

That's exactly the point.

[Mateyhv]

Yes, that is a very desirable option. I suggest also improving the failsafe land feature since in its present state I don't think anyone use it in multicopters. Desarming the motors after a preset time just doesn't make sense. The copter might be still a hundred meters above ground or be spinning on the ground, winding grass or foreign objects wich surely will end in burning motors/escs.
Copters must rely on the sudden bump on touchdown for desarming the motors, maybe .5secs after the high G-load. The same should be true for the manual emergency landing.

[teckel12]

This sounds like a good idea. When you get low to the ground at your emergency landing location, you'll most likely loose connection at some point triggering RTH, which won't be a good thing.