Ardupilot Arduplane APM2.5 2.6 Airspeed Meter For RC Airplane

Highlights

• Airspeed do some helps with heavy wind, slow speed flying and automatic landing
• Working principle: upper tube is dynamic (measuring the air pressure of front opening, air is compressed into airspeed tube), the bottom tube is static (measuring the side port airspeed tube)
• You can use APM Planner or stand on the ground to got the numerical value
• Blowing into a pitot tube to observe the response
• Zero in the still air and small value oscillation (2-3) are normal
• The airspeed change with the pressure's square root.So the change under close to zero pressure difference is very small,while in flight need more pressure to generate the estimated speed changes
• If you see the most numerical value is 0,1,2, the occasional rebound to 3 or 4, think it is normal
• You will not see this change in flight

Specification