Vector Airspeed Expander with Pitot (p/n: PITOT-EXP) The Airspeed Expander allows you to measure true airspeed with your Vector, which complements the ground speed reading with your GPS sensor.The Airspeed MicroSensor uses a Prandtl style pitot-static tube to measure airspeed, just as full sized planes do. Includes Pitot (prandtl) tube, and approximately 3 feet (1 meter) of pitot hose. NOTE: this sensor is compatible ONLY with the Vector Flight Controller + OSD.