The aerospace and defence sector demands unforgiving precision: every gram saved, every flutter mode characterised, every fatigue cycle accounted for. Programmes run for decades, carry hundreds of configurations, and answer to airworthiness authorities at every step. DDSPLM — a Siemens Gold Partner and Smart Expert Partner — helps OEMs and tier-N suppliers across India ship validated designs faster with the Siemens NX, Simcenter and Altair portfolio, without loosening the traceability the sector lives by.
What’s driving engineering teams
- Lightweighting against tighter margins. Composite primary structure and topology- optimised metal parts are now the default, not the exception — and both demand simulation to certify.
- Model-based engineering and the digital thread. Authorities increasingly accept analysis evidence in place of test articles, which only works when every model, revision and requirement is linked end to end.
- Long-life programmes, ageing data. Much of the installed fleet predates modern CAD, so refit and sustainment work starts with reverse engineering before anything else.
- Sovereign and classified work. IP segregation and on-prem-only operation are non-negotiable on defence programmes.
What we deploy
- NX CAD for primary structure, complex aerodynamic surfacing and large-assembly design.
- Simcenter 3D, Femap and Nastran for structural FEA, thermal, vibro-acoustic and CFD simulation — from quick checks to certification-grade analysis.
- Altair HyperWorks for topology optimisation and multidisciplinary design exploration.
- Teamcenter for configuration management across programmes with hundreds of variants and a defensible digital thread.
Common projects we run
- End-to-end CAE chains for aero-structure validation, from load cases to margin reports.
- Composite layup, draping and progressive-failure analysis for primary structures.
- CFD-based external aerodynamics, store-separation and thermal-management studies.
- Reverse engineering of legacy hardware where original CAD isn’t available.
Why customers pick us for this sector
We’ve supported defence-grade programmes where IP segregation matters. Our deployments are configured for the data-classification controls and on-prem-only operation the sector typically requires — and our engineers speak the language of certification, not just CAD.