Hindustan Aeronautics Limited (HAL) is on the lookout for a qualified engineering service provider to collaborate on the structural design and analysis of the Indian Multi-Role Helicopter (IMRH) airframe. This initiative underscores HAL’s commitment to enhancing the indigenous capabilities of India’s defense manufacturing industry.

The selected engineering service provider, acting as the design partner, will undertake the critical task of defining the structural design of the IMRH airframe, starting from the Preliminary Design Phase. This includes the design of both metallic and composite components. The scope of work encompasses various aspects, such as detailed sizing, creating detailed finite element models (DFEM), producing stress analysis reports, generating manufacturable 3D part definitions, incorporating model-based dimensioning in CAD models, developing system models, mapping requirements to CAD geometry, establishing trace links for verification and validation, and creating part and assembly drawings, all while adhering to budgeted weight constraints.

It’s worth noting that the detail design phase is a dynamic and iterative process. At the outset, it’s challenging to precisely determine the total number of drawings required, as this evolves over time. The engineering service provider is expected to independently estimate the number of drawings and the associated effort needed for the project. The evolution of the design phase is driven by various factors, including technical advancements, design refinements, and input from HAL.

To facilitate the project, HAL will provide several inputs to the engineering service provider. These inputs include a preliminary system diagram of the IMRH, the Numerical Master Geometry/Surface Model of the airframe in Unigraphics, extracts of relevant user requirements, the Structural Design Criteria Manual, weight targets, details of systems/equipment within the airframe, drafting room manual for design drawing practices, overall loads on the IMRH airframe (with structural component loads to be determined by the service provider), lists of materials and fasteners to be used, part numbering systems, and part marking and identification guidelines.

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