National Aerospace Laboratories is the only government aerospace R&D laboratory in India’s civilian sector. Established by the Council of Scientific and Industrial Research, CSIR-NAL has a threefold mandate: develop aerospace technologies with strong science content, design and build small and medium-sized civil aircraft, and support all national aerospace programs.
As part of this mandate, CSIR-NAL developed SARAS, a 14-seat, multirole light transport aircraft. SARAS is equipped with a state-of-the-art stall warning system and aircraft interface computer (SWS/AIC) that alerts pilots when the plane is in danger of stalling. Recently, CSIR-NAL engineers completed a SWS/AIC pilot project in which they quantified the advantages of Model-Based Design over their conventional approach for DO-178B Level A software development. Among other benefits, they found that Model-Based Design with MATLAB® and Simulink® reduced the effort needed to upgrade functionality by 75%.
“In the past, functional upgrades required manual iterations for design changes, code modifications, retesting, and report generation,” says J. Jayanthi, senior principal scientist at CSIR-NAL. “With Model-Based Design, upgrades become simple because the links between requirements, model, code, tests, and reports have already been established. We just make changes at the model level and everything—including the generated code—falls into place.”