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| Activity title | Methodology for Tactical Missile IR Signature Predictions | Activity Reference | AVT-376 | Panel | AVT | Security Classification | Other | Status | Active | Activity type | RTG | Start date | 2022-01-01T00:00:00Z | End date | 2024-12-31T00:00:00Z | Keywords | Electro Optics, Signatures, Simulation, Survivability | Background | Previous NATO activities (AVT-232 and AVT-281) have successfully reviewed the technical requirements to deliver credible capability to predict Electro-optical (EO) signatures in Land, Sea and Air environments. Such capabilities are required to support the ongoing survivability of weapons and platforms in a rapidly developing complex threat landscape. However, the infrared (IR) prediction of tactical missiles and hypersonic vehicles continue to be very challenging, in particular when fuel additives are used, which strongly affect plume emissions. The AVT-281 working group investigated, through analysis of existing experimental database and careful predictive techniques, the issues and approaches to model IR missile signature. AVT-281 identified that additional research is required to improve the understanding of the physics involved in tactical missile signatures, in order to provide a prediction capability with a satisfactory level of fidelity. The result would be to reduce the dependence on expensive trials and missile test firings that provide empirical data, thereby allowing the evaluation of changes in the missile design, and in the environmental and operating conditions on its IR signature. | Objectives | To investigate the physical phenomena which contribute to tactical missile signatures, through theoretical, experimental and simulative analysis of missile firings. Collaboration assists this evaluation through sharing of test procedures, experimental data, analysis of ‘full’ end-to-end missile measurements and side-by-side calculation comparison with different algorithms and methodologies. | Topics | Identify existing relevant measurements and establish a multi-national team of participants to compute test cases in support of model validation. Complementary well-defined small-scale experiments may also be required. Results from the measurements will assess modelling robustness.
The overall study will assess the parameters affecting the signature of tactical missiles including the propulsion system characteristics, fuel composition and operating conditions. Additionally the application of the signature techniques for the assessment of hypersonic threats will be explored. The physics involved in the combustion mechanisms, plume chemistry, gas and particle radiations, gas/particle flow coupling and radiative scattering will all be included in detailed modelling analysis. In addition, there will be a requirement to address supporting areas, such as instrumentation, joint trials planning, material properties (e.g. complex refractive indices), the signature/sensor interface and environmental monitoring.
Attention to other mechanisms affecting whole platform signature, such as aerothermal heating, atmospheric propagation and the impact of lower pressure regimes (i.e. High Altitude) will ensure the entire prediction process has an end-to-end consistent level of fidelity to support our customers in all areas of operation.
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