Air Data Unit

The Air Data Unit is used to measure pitot airspeed and barometric altitude in fixed wing aircraft. It features high accuracy temperature calibrated pitot and static air data sensors and outputs data over RS232. It can be used standalone or connected to one of Advanced Navigation's Spatial series of GPS/INS products for outstanding navigation accuracy in fixed wing aircraft when GPS is not available.

USD 1,147
Unit with breakout cable. Volume discounts available.

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Temperature Calibrated Pressure Sensors
Temperature Calibrated Pressure Sensors
The Air Data Unit features very high accuracy absolute and differential pressure sensors. These are factory calibrated over a wide temperature range to further increase measurement accuracy and provide the best air data possible through varying conditions.
Power Up Self Calibration
Power Up Self Calibration
On top of factory temperature calibration, every time the air data unit powers up, it performs a self excitation calibration to adjust for small deviations of bias and scaling error. This allows the system to compensate for calibration ageing and means that it never needs to be returned to the factory for recalibration.
Miniature Rugged Enclosure
Miniature Rugged Enclosure
Air Data Unit's precision air craft grade aluminium enclosure is waterproof and dirtproof to the IP67 standard and shockproof to 100g, allowing it to stand the test of time under tough conditions. Its minimal size, weight and power requirements allow for easy integration into almost any aircraft.
The Air Data Unit is protected from surges, reverse polarity, brown outs and overvoltage to continue operating through harsh electrical conditions. Its communications interface is optically isolated to prevent ground loops and protect sensitive equipment connected to it. It is built on top of a safety oriented real time operating system and all software is designed and tested to safety standards with fault tolerance in mind.


Air Data Unit is ideal for UAVs to provide a cost effective source of high accuracy airspeed and barometric altitude. It's small size, weight and power requirements allow for easy installation into smaller UAVs. When combined with one of Advanced Navigation's Spatial series of GPS/INS products it can allow the UAV autopilot to continue flying autonomously through extended GPS outages.
Survey Aircraft
Air Data Unit can save time for fixed wing aircraft performing real time survey work that cannot afford to have survey data corrupted by short term GPS outages.
Recreational Aircraft
Air Data Unit is a great choice for recreational aircraft owners looking for a low cost, high accuracy source of airspeed and barometric altitude to power instruments.


Variant Low Speed Standard High Speed
Maximum Airspeed 63 m/s 225 m/s 420 m/s
Minimum Valid Airspeed 8.0 m/s 20 m/s 48 m/s
Airspeed Accuracy 0.5 m/s 1.0 m/s 2.0 m/s
Altitude Accuracy
(turn on to turn on)
18 m 18 m 18 m
Altitude Accuracy
(in run)
1 m 1 m 1 m
Altitude Resolution 0.0015 m 0.0015 m 0.0015 m
Airspeed Resolution 0.00005 m/s 0.0001 m/s 0.0004 m/s
Calibrated Temperature Range -20 to 60 °C -20 to 60 °C -20 to 60 °C
Burst Airspeed Pressure 34 kPa 103 kPa 310 kPa
Interface RS232
Interface Isolation Optically Isolated
Speed 115200 baud
Protocol AN Packet Protocol
Output Data Rate 20 Hz
Operating Voltage 5 to 36 V
Input Protection ±40 V
Power Consumption
0.075 W
Operating Temperature -20 to 85 °C
Environmental Protection IP67
Shock Limit 100 g
Dimensions 48x42x32 mm
Weight 55 grams


Download / Link
Air Data Unit Reference Manual
Air Data Unit 3D Model
Air Data Unit Datasheet


Air Data Unit Viewer V1.2
Air Data Unit Viewer is a basic utility to view the data from the Air Data Unit. Java is required to run this program. Released 13th December 2017.
Release date
25 May, 2018
Air Data Unit SDK V1.1
The Air Data Unit SDK provides royalty free example source code for interfacing with Air Data Unit through the AN Packet Protocol. The languages provided are C/C++, Java, and .Net C#.
Release date
24 January, 2018