Aeronautical development Agency(ADA) has taken up the task of design and development of the Light Combat Aircraft (LCA), In order to carry out
this task, ADA has provided continuous thrust to develop CFD tools for the aerodynamic design/analysis of LCA since 1986, through both in-house efforts and sponsored projects.Significant progress has been made in the development of CFD codes for design and analysis and also in the area of grid generation and past-processing, As a design tool, ADA has developed a panel code for complete aircraft with ground effect at small angles of attack and side slip. For
transonic flow regime, full potential field integral code of ADA, which uses cartesian field grid with surface panelling, can handle complete aircraft including external stores and control surface deflections. Full potential code based on cartesian grid is a very useful tool for design and analysis of complex aircraft configuration since its turn-around time is small. For higher angles of attack and side slip at all speeds, multi-block Euler code capable of handling complex
configuration has been developed. Further, specialised codes such as RANS codes for internal/external flows have also been developed. For unsteady flow, codes have been developed for subsonic and transonic speeds for wing-body configuration (both rigid and flexible shapes) using transonic small perturbation (TSP) theory and vartex lattice method (VLM). |
