Award Data

SPS SHALL UNDERTAKE AND R&D EFFORT TO INVESTIGATE THE FEASIBILITY AND EFFECTIVENESS OF AN "INTELLIGENT EXPERT ASSISTANT" WHICH APPLIES EXPERT SYSTEM TECHNOLOGY IN CONJUNCTION WITH COMPUTER-AIDED SOFTWARE ENGINEERING (CASE) TOOLS FOR STRUCTURED SOFTWARE DEVELOPMENT. THE RESEARCH OBJECTIVE IS TO SHOW THAT HIGHER-QUALITY, FASTER, AND MORE EFFICIENT SOFTWARE DEVELOPMENT IS ACHIEVABLE WITH AN EXPERT SY ...

PROPOSED HEREIN IS A PROGRAM TO DEVELOP AN IMPROVED METHOD FOR TURBINE BLADE DISK ATTACHMENTS. A DESIGN CONCEPT IS PRESENTED TO ALLOW EASY REMOVAL AND REPLACMENT OF BLADES, REDUCE THE MASS OF THE ATTACHMENT REGION, AND MAINTAIN THE STRUCTURAL RELIABILITY OF STANDARD FIR-TREE AND DOVETAIL ENTRY ROOT DESIGN. THE "SPLIT ROOT" CONCEPT COMBINES THE INSTALLATION FEATURES OF AN AXIAL TYPE BLADE ROOT, WIT ...

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The development of optimal engine exhaust noise reduction technology for tactical aircraft continues to rely heavily on laboratory-scale testing due to the absence of appropriate modeling and analysis capability. Thus, concept identification relies largely on engineering intuition, ad hoc reasoning, and exhaustive parametric testing. Another obstacle to the development of exhaust noise technology ...

The Department of Defense has a growing interest in unmanned aerial vehicles (UAVs) to provide over-the-horizon surveillance, detection, classification and destruction of time-critical surface targets. Forward Area Support Munition (FASM), a Navy ATD program approved for FY99 start, is a 5-inch gun-launched projectile that transforms into a propeller propelled UAV. A future engine for the system ...

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Freeform optics allow for greater versatility in optical design that will give the designer the ability to decrease the number of optics in an assembly lowering the amount of mass and volume required to attain the same optical properties. Currently the design and fabrication of freeform optics are costly due to the difficulties introduced with mainly the fabrication and metrology of these parts. B ...

Freeform optics allow for greater versatility in optical design that will give the designer the ability to decrease the number of optics in an assembly lowering the amount of mass and volume required to attain the same optical properties. Currently the design and fabrication of freeform optics are costly due to the difficulties introduced with mainly the fabrication and metrology of these parts. B ...

ADVANCED STRUCTURAL MATERIALS USED IN THE FABRICATION OF SUBMARINES CAN SUSTAIN LARGE STRAINS DURING THE FORMATION PROCESS CAUSED BY EXPLOSIVE LOADINGS. THE COMPUTATIONAL SOLID MECHANICS COMMUNITY HAS RECENTRLY RECOGNIZED SERIOUS SHORTCOMINGS IN CALCULATIONS USING MATERIAL MODELS IN THIS LARGE STRAIN REGION. BECAUSE OF THE IMPORTANCE OF CALCULATIONS IN UNDERSTANDING THE SHOCK RESPONSE OF SUBMARINE ...

Weidlinger Associates Inc (WAI) proposes to develop a state-of-the-art modeling capability for long range wave propagation in littoral environments, including detailed analyses of sea floor, marine mammals, and man made objects, by integrating a suite of computational methods. Through use of the most appropriate computational methods for each component, which are then coupled in a seamless and eff ...