|Object Name:||Multi-Axis Pitot-Static Probe Parts|
|Year of Manufacture:||1974|
|Location:||Archive Object Store|
Part No 05-007-01
Ser No 003/74
Multi-Axis Pitot-Static Probe
Mfr Code K0656
The Airspeed and Direction Sensor (AADS) forms part of the Helicopter Air Data System (HADS) together with the High Integration Air Data Computer (HIADC). The system outputs accurate air data over the entire flight envelope (forwards, rearwards, sideways and vertical)of a helicopter to a variety of avionics systems.
The AADS is a swivelling probe with pitot and static ports and an integrated air temperature sensor to provide accurate measurement in three axes. The HIADC receives pneumatic and air temperature inputs from the AADS; corrects for systematic errors and computes air data parameters for output on a serial bus.
The AADS is mounted on a boom under the rotor and the pressure head is mounted on gimbals to allow alignment with the local airflow. At high forward speeds it acts like conventional pitot-static probe but at low airspeeds the rotor downwash becomes the dominant factor and the unique characteristics of this swivelling probe provide a solution. The system was fitted to a variety of Helicopters such as the AH-64D, Cobra and EH101.
This collection of parts from the probe has been combined with its outer sleeve (that had been part of C0323) to make a more complete assembly.