Octantis 2 Attitude and Heading Reference System (AHRS)
MEMS-based AHRS for Airborne Application
Aeron’s Octantis 2 AHRS is a tactical class Attitude and Heading Reference System for airborne applications. The model OCT2 AN5300S AHRS has been designed as per the DO-254 standards and qualified as per MIL-STD-461E and MIL-STD-810G standards. The AHRS software has been tested through a rigorous IV&V process and certified as per DO-178B level B standards. The AHRS system has been accorded the CEMILAC (Indian Airworthiness) certification. The unit meets the performance requirements as per the RTCA-DO-334 standard.
The AHRS is an airborne qualified system and can be used as a primary or standby instrument in electronic flight instrumentation systems, cockpit displays in a wide range of fighter, transport and passenger aircrafts.
Key Features
High Reliability System
Airworthiness Certified with Redundant Sensor Configuration
Device Diagnostics
Complete Continuous Built in Test
Power Consumption
Low Power <2.5 W
External Magnetometer Interface
To facilitate the user to choose the external magnetometer data to avoid degradation caused by nearby systems
TSO Compliant Performance
Suitable for flight instrumentation, attitude indication
Low Noise Sensors
To give highly accurate attitude and heading data
Software Certification
DO178B Level B compliant software
External True Air Speed (TAS) aiding
Accepts external TAS data for velocity aiding
Isolated Interfaces and power supply
Making it resistant to electromagnetic interference on data and power lines
Communication
Comes with standard Serial RS422, RS232 interfaces
Technical Specifications
AN5300S
Range
±12 g
Resolution
1 mg
AN5300S
Range
±450 °/s
Resolution
0.1 °/s
AN5300S
Range
±4 gauss
Resolution
0.25 mgauss
AN5300S
Roll Range
±180°
Pitch Range
±90°
Roll, Pitch Static Accuracy
Less than ±1.0°
Roll, Pitch Dynamic Accuracy
Less than ±2.5°
Attitude Resolution
0.01°
AN5300S
Range
±180°
Accuracy
Less than ±2.5°
Resolution
0.01°
AN5300S
Input Voltage (isolated)
9 V to 32 V DC
Power Consumption
< 2.5 Watt
AN5300S
Input / Output Ports
RS232, RS422
Connector
D-Sub 15 (M24308/3-2F)
Update rate
50 Hz
Baud Rate (RS422)
Configurable, 38400 (Default)
Baud Rate (RS232)
Configurable, 9600 (Default)
Data Format
Binary
External I/Ps
True Airspeed, Magnetic Field, Pressure Altitude
Output Parameters
Euler angles, Body Accelerations, Euler Rates, BIT (Built-In-Tests)
AN5300S
Typical
Tolerance
Units
Dimensions
148 (L) x 115 (W) x 63 (H)
±0.3
mm
Dimensions
950
± 50
gms
Operating temperature
-40 to +71
°C
Storage temperature
-55 to +90
°C
Humidity
10 to 95 (non – condensing)
% RH
MTBF (Mean Time Between Failure)
> 14000 hours (as per MIL-HDBK-217F)
AN5300S
Conducted Emissions, Power Leads
As per test CE102 of MIL-STD-461E (Basic Curve)
Radiated Emissions, Electric Field
As per test RE102 of MIL-STD-461E
Radiated Susceptibility, Electric Field
As per RS103, 60 V/m level of MIL-STD-461E
Conducted Susceptibility, Power lead
As per CS101 of MIL-STD-461E (Curve #2)
Conducted Susceptibility, Bulk Cable Injection
As per CS114 of MIL-STD-461E (Limit Curve #3)
Conducted Susceptibility, Bulk Cable Injection, Impulse Excitation
As per CS115 of MIL-STD-461E
Conducted Susceptibility, Damped Sinusoidal Transient, Cable and Power Leads
As per CS116 of MIL-STD-461E (IMax = 5 A)
AN5300S
Random Vibration Test
As per MIL-STD-810F, method 514.5C-17, Procedure I, Category 12
High Temperature Ground Survival Test
As per MIL-STD-810G, Method 501.5, Procedure I
Ground Operation Short Term Test
As per MIL-STD-810G, Method 501.5, Procedure II
Ground Operation Long Term Test
As per MIL-STD-810G, Method 501.5, Procedure II
Low Temperature Test
As per MIL-STD-810G, Method 502.5, Procedure I
Low Pressure (Altitude) Test
As per Clause 3.2.1.4, JSS55555: 2000, Revision No. 2
Humidity Test
As per MIL STD 810F, Method 507.4
Acceleration Test
Structural, MIL-STD-810G, Method 513.5, Procedure I
Operational, MIL-STD-810G, Method 513.5, Procedure II
Shock Survival Test
As per MIL-STD-810E, Method 516.4 Procedure I
Transit Drop Test
As per MIL-STD-810F, Method 516.5, Procedure IV
Thermal Shock Test
As per MIL-STD-810F, Method 503.4
Drip Test
As per MIL-STD-810F, Method 506.4, Procedure III
Fungus Test
As per MIL-STD-810F, Method 508.5
Fluid Contamination As per MIL-STD-810F, Method 504.1
Corrosion Salt Fog Test
As per MIL-STD-810E, Method 509.3
Applications
Articles
FAQ
OCT2 AN5300S is qualified for DO178 Level B+. The qualification included 100% MC-DC coverage.
Yes, the unit has been tested rigorously and is being deployed and is in production for airborne applications.
At present this unit is CEMILAC certified. Please contact us on sales@aeronsystems.com regarding this.
OCT2-AN5300S can accept data from external magnetometer and air data computer. More details are available in the user manual.
The default baud rate for OCT2 AN5300S is 38400.
The nominal operating voltage for the device is +28 V DC.
Yes, the OCT2-AN5300S may be considered as a form-fit-function equivalent of Crossbow GRU. The mounting arrangement for the two units is identical and the electrical and software interfaces are very similar.