Rotorcraft Integrated Electro-Optic/Infrared (EO/IR) Plumes and Effects Signature Modeling

ATA Engineering, Inc., in collaboration with IERUS Technologies, Inc., proposes the continued development of the Rotorcraft Advanced Signature Prediction (RASP) toolkit. This will involve extension of existing widely used, well-validated EO/IR toolsets to rotorcraft through a modular, variable-fidelity, hierarchical approach to signature analysis. To achieve this capability, the project team will integrate the NASA FUN3D unstructured CFD solver with the JANNAF Spectral and In-band Radiometric Imaging of Targets and Scenes (SPIRITS) and Fast Line-of-sight Imagery for Target and Exhaust Signatures (FLITES) EO/IR signature modeling tools, in addition to extending support for Standard Plume Ultraviolet Radiation (SPURC).The Phase II effort will focus on integration with the aforementioned EO/IR solvers and expansion of their support with the RASP toolkit, improving the toolkit’s physics modeling capabilities, and verifying the predictive accuracy of the toolkit. The effort will establish a variable-fidelity approach where modeling components, such as the inclusion of fuselage conjugate heat transfer, may be switched on and off in a hierarchical approach to ascertain the underlying sensitivities to the choice in numerical models. This approach also directly supports situations where advanced modeling parameters may not be known and lower-fidelity models are preferred.