The plane starts without an airspeed sensor
InformationStart-up and what the board reportsPlane only
What ArduPilot says:
- No airspeed sensor
At start-up no airspeed sensor is switched on (ARSPD_TYPE is 0). That is a normal way to fly a small plane: ArduPilot then estimates airspeed from GPS speed, wind and throttle, and holds speed with the throttle setting instead of a measurement.
What to do, most likely first
A sensor is fitted but ArduPilot was never told.
FixSet
ARSPD_TYPEto your sensor's type and reboot; keepARSPD_USEat 0 until its readings have been checked in flight.
Parameters to look at
| Parameter | What it is |
|---|---|
ARSPD_TYPE | Airspeed type |
ARSPD_USE | Airspeed use |
The code that sends it
No airspeed sensor
libraries/AP_Vehicle/AP_Vehicle.cpp AP_Vehicle::setup() · Open in ArduPilot Plane-4.7.1