Air Data Unit

USD 1,147

Volume discounts available

The Air Data Unit measures pitot airspeed and barometric altitude in fixed-wing aircraft.

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 INS products for outstanding navigation accuracy in fixed-wing aircraft when GNSS is not available.

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

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.

Reliability

The Air Data Unit 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. Its communication interface is optically isolated and the hardware is designed and tested to MIL spec.

Specifications

Sensors

Low Speed

Maximum Airspeed
63 m/s
Minimum Valid Airspeed
8.0 m/s
Airspeed Accuracy
0.5 m/s
Altitude Accuracy (turn on to turn on)
18 m
Altitude Accuracy (in run)
1 m
Altitude Resolution
0.0015 m
Airspeed Resolution
0.00005 m/s
Calibrated Temperature Range
-20 to 60 °C
Burst Airspeed Pressure
34 kPa

Standard

Maximum Airspeed
225 m/s
Minimum Valid Airspeed
20 m/s
Airspeed Accuracy
1.0 m/s
Altitude Accuracy (turn on to turn on)
18 m
Altitude Accuracy (in run)
1 m
Altitude Resolution
0.0015 m
Airspeed Resolution
0.00001 m/s
Calibrated Temperature Range
-20 to 60 °C
Burst Airspeed Pressure
103 kPa

High Speed

Maximum Airspeed
420 m/s
Minimum Valid Airspeed
48 m/s
Airspeed Accuracy
2.0 m/s
Altitude Accuracy (turn on to turn on)
18 m
Altitude Accuracy (in run)
1 m
Altitude Resolution
0.0015 m
Airspeed Resolution
0.00004 m/s
Calibrated Temperature Range
-20 to 60 °C
Burst Airspeed Pressure
310 kPa

Communication

Interface
RS232
Interface Isolation
Optically Isolated
Speed
115200 baud
Protocol
AN Packet Protocol
Output Data Rate
20 Hz

Hardware

Operating Voltage
5 to 36 V
Input Protection
±40 V
Power Consumption (Typical)
0.075 W
Operating Temperature
-20 °C to 85 °C
Environmental Protection
IP67 • MIL-STD-810G
Shock Limit
100 g
Dimensions
48 x 42 x 32 mm
Weight
55 grams

Documentation

Datasheet
21 Sep 2021 - V 1.6
Reference Manual
13 Oct 2020 - V 1.5
3D Model
25 Jul 2016 - V 1.0

Software

Air Data Unit Viewer

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.

25 May 2018 – V 1.2

Air Data Unit SDK

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#.

24 Jan 2018 – V 1.1

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