The competencies to design, develop and qualify LRUs address the key tasks from system conceptualization through system validation, qualification and certification. The system specifications are allotted to hardware and software and the entire development complies with DO-254 and DO-178B/C standards. Systems are validated with the support of Test rigs, with plant models implemented in Hardware-In-Loop Simulation (HILS) set ups. Environmental Qualification testing is carried out as per DO-160, Mil-461 and Mil-810 standards considering the system’s end use.
Software design, Verification, and Validation
The team has rich experience in embedded Software design and development complying with DO-178B/C. The major activities include Software Requirement Analysis, Software Architecture and Detailed Design using structured and model based techniques. Depending on the safety criticality level, the applicable analysis, reviews, coverage and MCDC testing etc. are performed.
Hardware design, verification and validation
Our expertise spans the design of complex boards using various families of processors, FPGAs, analog, digital mixed signal designs. While we do FPGA and ASIC front-end & back-end designs, our quality procedures are compliant with DO-254 and are adopted while verifying and validating them. We do design analysis like stress, worst-case, timing, signal integrity etc. Form, Fit, Functional re-engineering of existing designs are some of the areas where we have a significant experience.
Safety and Reliability analysis
System Safety analysis is a crucial area in Avionics systems development. With expertise in areas like Functional Hazard Analysis (FHA), FMECA, Reliability prediction and Fault Tree Analysis, we have helped our customers in addressing their certification needs. The standards we follow includeARP-4761, ARP-4754, MIL-1629, and MIL-217. We also have expertise in working on tools like Relex, Reliability Workbench, and RAM Commander.
Modeling and simulation
Our capabilities include mathematical modeling and simulation of various aircraft subsystems/plant using Matlab, Simulink, and LabVIEW. It helps us validate the Line Replaceable Units (LRUs) early in the development cycle. It also gives us the flexibility to validate under complex scenarios. We have vast experience in using dSPACE and NI systems for carrying out Hardware-In-Loop Simulation for system validation.
Test RIG design and development
The team has extensive experience in designing and developing test systems for LRU and system testing. Our capability spans across designing systems around PCI, cPCI, PXI, SCXI, VXI, and VME platforms with GUI implemented in LabView, LabWindows CVI, VC++, C#.net, VB.net, and Java. We have handled a variety of protocols including RS-232/422/485, GPIB, USB, CAN, Ethernet, ARINC-429, MIL-1553B, and AFDX.
Electrical Schematics design & engineering
Electrical Harness design for aircrafts is a major responsibility for OEMs. The design is carried out for interconnecting the various Line Replaceable Units (LRUs), as well as other electrical systems present in the aircraft. Tata Elxsi has teams with experience in VeSys and CHS to support new schematic generation, as well as legacy migration.
The team has comprehensive experience in offering CAD/CAE solutions as part of its total product development offerings. Our capabilities for aircraft structures include design & development covering modeling, model modifications and manufacturing drawings. Our Finite Element Analysis team can offer services like Static & Dynamic analysis, Fatigue analysis, failure modes, stress justification reports & test optimization.