Award Data

Temperature control has been a major concern during High Velocity Oxygen Fuel (HVOF) processing since it was originally utilized in the aerospace industry. Typically, temperature must not exceed 300oF to prevent heat damage/ tempering of the substrates on steel alloys, and even lower temperature requirements for aluminum and titanium alloys. These problems have prevented USAF depots from usage of ...

In Phase I a novel spiral resonator was demonstrated that is both chip based and has high immunity to thermal noise. The system uses a silica-on-silicon platform and is therefore compatible with a wide range of photonic and electrical components. In Phase I, the optical coupling to the resonator utilized a fiber taper. In Phase II, a program is proposed to further increase the robustness of the re ...

Boston Engineerings Advanced Systems Group is collaborating with Prof. Holly Yanco at the University of Massachusetts at Lowell to develop a design science for robot-operator interfaces under a DARPA Phase I STTR program. Our program, called Robot Linked User Control and Interface Design (R-LUCID), is aimed at distilling and understanding the components of interaction including robot capability, ...

ABSTRACT: Over the last twenty years the United States has become dependent on space technology for communications, precision tracking and many other applications. Globalization of the worlds economy, which has also dramatically increased over the past twenty years, has resulted in this same dependence in industrialized and developing nations around the world. As a result of these trends, the s ...

ABSTRACT:The reduction of aerodynamic/hydrodynamic noise caused by violent turbulence is of strategic importance to many military systems. These include modern fighter jets, unmanned weapons with sensitive electronics, and surface and underwater vessels. For all these systems, aerodynamic or hydrodynamic noise can produce unacceptable levels of operational loads or acoustic vibrations, or be detri ...

ABSTRACT:It is widely recognized that near surface residual stresses play a significant role in fatigue performance. Tensile residual stresses are of concern because they accelerate fatigue crack initiation and fatigue crack growth relative to what would occur in the absence of residual stress. Compressive residual stresses, on the other hand, have the opposite effect and can be used to improve fa ...

ABSTRACT:We have investigated different strategies for removing the surface porosity from out-of-autoclave (OOA) composites.It was found that a release layer on the aluminum tool with a microstructure similar to that of woven Teflon release plies was effective at reducing the porosity.These structures allow trapped gases to escape during curing, so that they do not generate bubbles/pores in the la ...

ABSTRACT: Under this effort, we will develop a system for precise cross-cueing of target locations between different EO sensors flying on different platforms. The primary emphasis is on target handoff between wide area motion imagery (WAMI) sensors and narrow field-of-view full motion video (FMV) sensors. We address the challenges imposed by metadata inaccuracies, different resolutions, differe ...

Wafer-Level Micro-Cameras are needed for a variety of defense and commercial applications.SiGe based micro-camera offer a very low cost alternative for developing visible-near IR sensors that will not require any cooling and can operate in the 0.3-1.7 micron band. The attractive features of SiGe based micro-camera will take advantage of 12-inch silicon based technology that can promise very small ...

ABSTRACT: We propose to develop a systematic framework for constructing 3D scene knowledge from EO/IR video sequences to provide accurate 3D change detections, informative shadow/occlusion masks for target tracking, and geo-location and compression indicators. We construct 3D scene models at a range of fidelities to support robust modeling over a broad range of imaging geometries and viewpoint d ...