The development of passive acoustic instrumentation systems and technology for reentry vehicle flight test measurement of hydrometer mass and number density is proposed.

The goal of this study will be to prove the feasibility of developing a hardened, lightweight aft cover for future reentry vehicles. the individual tasks include, determining material and design requirements for future vehicles, identifying what material and design concepts will meet these… More

Aptek, as prime contractor, in conjunction with general electric company and sri international, as subcontractors, will conduct a study to identify and investigate candidate overlay materials versus system requirements for both active and passive decoys. overlay materials developed by the nh&s… More

This activity will develop and demonstrate a method to superimpose a signal on data channels which will identify the particular data channel. the signal will be generated as a binary code. included will be the design, development and testing of one or more prototype channel identifier system(s) to… More

As army medical field and hospital equipment, through technological advances in integrated hardware, becomes more complex and sophisticated, it likewise becomes more susceptible to damage from potential nuclear emp coupled current and voltage transients. this proposal defines a plan whereby the… More

The overall goal of this study will be to develop an interactive, optimization-based, computer graphics software package for the determination of the optimal physical fit of objects (i.e. weapons, submunitions, etc...) into containers (i.e. aircraft, missile dispensers, tec...). this package will… More

The highly successful boundary layer acoustic monitor (blam) program produced blam gauges which were used on minuteman flights to test flow around re-entry vehicles (rv), and detect the location of the transition to turbulent flow. it is postulated that these blam gauges can be reconfigured to… More

Currently survivability assessments do not use artificial intelligencetechniques. the goal of this phase i proposal is to build a demonstratable knowledge support system to assist survivability analysts and system architects in making survivability assessments. specifically, we will build a system… More

This work will develop a procedure for the acoe to animate the output data from various finite element/difference codes with state-of-theart color computer graphic animation techniques. part of this effort will be the creation of a motion picture (movie) of an actual dynamic finite element… More

A feasibility study of improving decoy penetration aid (penaid) performance by supplying means to 1) allow for dual center of gravity (cg) location, thereby enabling independent fulfillment of impulse balancing and reentry stability requirements; and/or 2) counteract decoy coning by sensing its… More

The objective of the proposed work is to analyze the hypervelocity models tested at arnold engineering development center to determine the cause of nosetip fractures. we will accomplish this goal by performing twoand three-dimensional finite element analyses of the hypervelocity model using dyna2d… More

The overall goal of phase i and phase ii is to develop software that will find the optimal size and shape of marb designs according to user defined design criteria. phase i will show the feasibility of marb shape design optimization by combining a geometric modeler, optimization software, and… More

This proposal designs a man portable and deployable footbridge with the bridging capability to cross a 20 meter dry gap and an unlimited wet gap. the bridge is deployable quickly and quietly, and only requires access to one side of the gap. the design uses new lightweight, high-strength materials… More

The proposed research program will provide an evaluation tool for assessing the effects of manufacturing and in-service material anomalies on subsequent solid rocket motor performance. the evaluation tool consists of a nonlinear finite element program with a composite damage and failure constitutive… More

This program will develop field instrumentation suitable for use in an underground (ugt) or aboveground (agt) radiation test environment, for the measurement of electrical properties of materials as they recover from irradiation. the effort will consist of sample holder and instrumentation design,… More

This activity will investigate the use of pvdf film for use as a low z strain gage. the pvdf material is an order of magnitude more sensitive than pzt as a piezoelectric material and has an atomic number much lower (low z) than present resistive strain gage materials. therefore, pvdf as a strain… More

High pressure blast or impact loads on the outside of a concrete wall can cause spalling of the inside of the wall. flying spall fragments are dangerous to personal and equipment inside concrete buildings subjected to attack or accidential explosion. this proposal details the logical, step-by-step… More

The overall goal of phase i and phase ii is to develop software that will find the optimal size and shape of missile designs according to user defined design criteria. phase i will show the feasibility of missile shape design optimization by combining a geometric modeler, optimization software, and… More

The innovation proposed herein will determine optimal packing solutions for location and orientation of items to be stowed in the space station. the technique will use three-dimensional computer graphics coupled with engineeringdesign optimization methodologies to efficiently determine preferred… More

The proposed research will provide a focused setof laboratory experiments which will help to quantify some of the critical effects of jointed rock media on coupling of nuclear explosions. the selection of a focused set of laboratory experiments will be guided by the available knowledge from the… More

A non-intrusive, boundary-layer transition detector that canindicate the presence of local transition and provide information on the frequency components of the flow will be developed. the design concept is an adaptation of a transition detector used successfully in ballistic-missile reentry-vehicle… More

This proposal is to use optical fiber graded-index (grin) rod lenses to develop a weapons sight that has magnification, a bright image, requires the eye to only focus at one distance, is rugged, is accurate, is simple, is small, is user friendly, and is compatable to be mounted on existing weapons.… More

Current coroputer analysis of bubble-submerged structure interaction, due to conventional weapons, is extremely resource intensive. therefore, it is very difficult to replace full scale live fire testing of submerged structure with scale testing of submerged structures and computer analysis. the… More

A new method for silencing internal machinery generated torpedo noise is proposed. This innovative solution to the problem has the added capabilites of: controlling on a wavevector basis the acoustic signal radiated by the torpedo and simulation of boundary layer excitation on a torpedo hull. The… More

A versatile, low profile actuator for incrasing aircraft performance by decreasing frictional drag is proposed. The concept dcan completely internal to the aircraft, and requires no pats, orifices, or strutures extending into the flow field which may become fouled. The Phase I effort consists of a… More

We propose to apply a non-intrusive embedded acoustic sensor concept, which has been used successfully in reentry vehicle aerodynamics applications for detecting exterior flow conditions to penetrator munitions for detecting various media and buried structures during penetration. This effort… More

The objective of the Phase I effort is to demonstrate an experimental/numerical technique for formulating penetration equations and identifying pertinent material parameters to be used in those equations. Although penetration equations for isotropic metals are well developed, such equations are not… More

This Small Business Innovation Research Project will determine the advantages and disad-vantages of fibrous/polymeric composite materials over traditional material (steel) for retrofitting key civilian facilities against terrorist bomb attack. Retrofit techniques we will evaluate are: … More

This Phase I and II SBIR will develop a user-friendly, run-time efficient software package dedicated to fitting and evaluating material models used in finite element codes like LS-DYNA. The software package will consist of a pre-processor, a core driver, and a post-processor. The pre-processor… More

This Phase I and II SBIR will develop a user-friendly, run-time efficient software package dedicated to fitting and evaluating material models used in finite element codes like LS-DYNA. The software package will consist of a pre-processor, a core driver, and a post-processor. The pre-processor… More