Instrumentation is needed in research and development for testing the aerothermochemical properties of gases at high temperatures, up to 5000 c. applications occur not only in the development of vehicles for hypersonic flight, but also to provide measurements in fundamental research in places and… More

An innovative technique utilizing a hybrid unstructured/structured grid methodology is proposed. An unstructured grid algorithm will be upgraded to model finite rate chemical kinetics, nonequilibrium particulates, and Large Eddy turbulence. The unstructured algorithm will be coupled to a structured… More

The development of innovative sensor technologies requires a complete spectral and spatial knowledge of missile exhaust plume signature characteristics of current and evolving threat systems. Measurement programs alone cannot provide the level ofsignature characterization necessary to fully support… More

There is a need for accurate predictions of threat TBM hardbody IR signatures, particularly in the development of plume-to-hardbody handover discrimination algorithms. However, current models for predicting missile body heating contained in the AerothermalTargets Analysis Program(ATAP) and the… More

A program of work has been formulated to develop a modern simulation tool to predict RF interactions(attenuation, diffraction, reflection, Doppler and backscatter) with missile exhaust plumes. The tool will be based, in part, on methodologies containedwithin two currently available codes:… More

An innovative approach is proposed that combines two powerful computational methodologies for fusing missile plume model predictions with sensor measurements to produce highly accurate missile signature databases. The first methodology, A-SCOPE (Automatic Simultaneous Constraint Optimization for… More

This program will develop a modern simulation tool to predict RF interactions (attenuation, diffraction, reflection, Doppler and backscatter) with missile exhaust plumes. The tool will be based, in part, on methodologies contained with the currently available PARCS(Plume Attenuated Cross Section)… More

The inability of current plume signature codes to accurately predict the altitude in the afterburning region at which the peak signature occurs and the rate of signature decay with altitude ("afterburning shutdown") is the subject of this solicitation. A more accurate description of afterburning… More

The impact of liquid fueled missile, thermal management systems on plume signatures, is of critical importance to accurate plume signature modeling. This proposal describes the innovative coupling of an engineering level thermal design tool, VITMAC (Vehicle Integrated Thermal Management Analysis… More

Missile exhaust plume radiant emission is a key observable for any missile defense system using optical sensors. Plume-to-hardbody handover and aimpoint selection algorithms are significantly influenced by the temporal and spatial variations of the highly visible exhaust plume signature. Current… More

Considerable effort has been expended by the missile defense community to obtain accurate, well validated simulation tools for the prediction of optical signatures. Since sensors must detect and track threat missiles from launch to impact, plume optical signatures are utilized during the boost phase… More

A common thread in developing low altitude plume optical and radar signature models is the identification of the relevant chemical reaction mechanisms and rate constants to incorporate in plume flowfield calculations. This generalization applies to all missile systems (theater, tactical and… More

ABSTRACT: Missile exhaust plume radiant emission is a key observable for any missile defense system using optical sensors. Current flowfield and signature tools cannot properly capture the plume structrue observed by missile defense sensors. This effort is designed to develop and implement image… More

The development of innovative sensor technologies requires a complete (both spectral and spatial) knowledge of missile hardbody and exhaust plume signature characteristics of current and evolving threat systems. However, measurement programs alone on domestic and foreign ballistic missiles cannot… More

A physics-based method for computing the passive microwave spectrum emitted by rocket engine exhaust plumes is proposed. Microwave emissions have an advantage over infrared for early detection of missile and rocket launches due to their superiority in penetrating through clouds, dust, and fog. The… More

The use of models to predict exhaust plume observables such as electro-optical (EO) signatures or radar cross section (RCS) is an integral part of many missile defense activities due to the limited quantity and extent of flight measurements on domestic and foreign missiles. The potential exists to… More

An effective missile defense will require an understanding of the combined radar signature of a hardbody and plume and a capability for predicting that signature. While there is a well developed technology and understanding of radar for the detection of missile hardbodies, the coherent radar… More

Missile defense systems like THAAD, GBI and AEGIS depend upon having prior knowledge of the signature characteristics of the threat missile in order to perform the necessary system functions to defeat the threat. Thus, the role of signature simulation (both radar and optical) technology is critical… More

The use of models to predict exhaust plume observables such as electro-optical (EO) signatures or radar cross section (RCS) is an integral part of many missile defense activities due to the limited quantity and extent of flight measurements on domestic and foreign missiles. The potential exists to… More

An effective missile defense requires an understanding of the combined radar signature of a hardbody and plume and a capability for predicting that signature. The proposed program will develop a state-of-the-art, computational tool that provides an interface between hardbody and plume RCS software… More

Missile exhaust plume radiant emission is a key observable for any missile defense system using optical sensors. Scene generation has become an important component within MDA to assess the performance of the BMDS system, and accurate rendering of the target during boost is essential for proper… More

Vernier engines operating at the same time as the main missile engine can change the overall structure of the engine exhaust plume. This SBIR focuses on the modeling of this interaction using techniques that do not require the use of high fidelity 3-D CFD computations. The proposed approach will… More

ABSTRACT: An exhaust plume is a primary observable to warning sensors designed to protect low flying aircraft from MANPADS and other hostile threats such as RPG's and small arms fire with tracers. The design of current and future warning sensors and countermeasures need a complete… More

Missile defense systems like AEGIS and THAAD depend upon having prior knowledge of the signature characteristics of the threat missile in order to perform the necessary system functions to defeat the threat. Thus, the role of signature simulation (both radar and optical) technology is critical for… More