101 West Eglin Blvd, Ste 337, Eglin AFB FL, 32542-6810

A -- ARMAMENT TECHNOLOGIES (PART 4 OF 5) SOL BAA NO. MNK-96-0001 POC Jean M. Pulley, Contracting Officer, (904) 882-4294, Ext 3402. CONTINUATION OF PREVIOUS SYNOPSIS for Armament Technologies: WEAPONS EFFECTS HOLOGRAPHY: The Instrumentation Technology Branch is conducting research to develop holographic imaging techniques to acquire test data from fragmentation events. Cylindrical holograms with 18 inch diameters are being made of fragments produced by projectiles impacting armor. Tomographic data reduction techniques to process the fragment dispersion, mass, shape, and velocity information contained in the cylindrical holograms are of immediate interest. A requirement also exists for a multiframe holographic recording system. The system should be able to record 80-100 holographic images over a 1-2 millisecond duration. An analysis of existing hydrocode and lethality/vulnerability models' data requirements and the ability of the models to handle the information contained in the cylindrical holograms is desired. Mr. David B. Watts, WL/MNSI, 904-882-5375 ext 1262. PHOTOGRAMMETRIC ANALYSIS OF LOW ALTITUDE MUNITION VEHICLE MOTION AND ATTITUDE: This requirement is to perform automated analysis of images captured and transmitted from precision guided munitions to achieve a time sequential record of attitude truth data. Several thousand ''video'' images will be telemetered during flight and recorded at ground stations. The time coded imagery will then be merged to produce a sequential file of imagery with varying degrees of overlap. The concept to be explored is the reconstruction via space resection techniques of the pitch, roll, yaw, x, y, and z data for the vehicle. Merger by means of optimal filtering techniques with telemetered inertial data, ground tracking data, or other sources is envisioned as a way to fill in gaps. Calibration of sensor errors and distortion is expected to be a particular challenge due to low sensor resolution and the high degree of distortion in short focal length optics (as compared to the well corrected aerial photogrammetric sensors commonly in use). Correlation with GPS surveyed ''ground truth'' and imagery data from USGS and other sources is of interest to minimize the number of ground control and tie points. Photomosaic and creation of composite live imagery/simulation is anticipated as a data product from the data analysis. Preliminary work has been accomplished with ERDAS/Orthomax photogrammetry software for mensuration, and Softimage modeling and animation for the flight simulation. Mr. Don Snyder, WL/MNSI, 904-882-5463 ext 3241, email: snyder@eglin.af.mil. ENERGETIC PYROMETRY: The objective of this research is to develop capability for measuring the temperature profiles for deforming structures. As force is applied to a structure, deformation will first occur elastically. After the yield point, the structure will respond plastically until it breaks. Plastic deformation is permanent, and consequently the energy applied to the system is lost to the system. While some energy is stored in molecular realignment, most of the energy gets converted to heat. Models have been developed to predict the plastic deformation of metals and explosives under high stress-strain conditions, and recently temperature has been incorporated in order to make a more accurate model. These models require validation of temperature profiles, and consequently this is the thrust of this effort. This work will primarily be concerned with the separation of emissivity and temperature. The objective is to develop nonmoving-part spectrometers and spectrometer components. Mr. Mark Hopkins, WL/MNSI, 904-882-4657 ext 3244. HYDROCODE PARALLELIZATION: The Warheads Branch is interested in the development of slideline logic algorithms for use in adaptation of hydrocodes to Massively Parallel Processing (MPP) computer platforms, such as the Cray T3D system installed at Eglin AFB FL. The slidelines are to be used in the modeling of hard target penetrating weapons going into concrete or geologic materials at high speeds. The application of the slidelines should be automated in order to facilitate ease of use. The slidelines must accurately model the penetration event. The slideline logic then must be incorporated with the EPIC hydrocode, the hydrocode most often used in the Warheads Branch, to produce a version capable of running on the MPP system. The resulting parallel code must exhibit significant speed-ups over current vectorized versions of EPIC. Maj Howard Gans, WL/MNMW, 904-882-8302 ext 3448, FAX (904) 882-9790 email: gans@eglin.af.mil. (SEE PART 5 of 5.) (0067)

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