Time filter

Source Type

United States

News Article | April 28, 2016
Site: www.rdmag.com

The two helicopters putter above a barren landscape, toting beneath them four-wheel vehicles. Looking like vehicles ripped from the “Halo” video game franchise, these two speedsters dart across the rugged terrain, handling uneven ground like it’s second nature. While these vehicles aren’t yet a reality, the Defense Advanced Research Projects Agency (DARPA) released a simulation video showcasing what the agency’s Ground X-Vehicles Technology (GXV-T) program hopes to develop. And they’ve taken a step towards bringing the GXV-T to reality by recently awarding contracts to eight organizations. “We’re exploring a variety of potentially groundbreaking technologies, all of which are designed to improve vehicle mobility, vehicle survivability and crew safety and performance without piling on armor,” said DARPA program manager Major Christopher Orlowski in a statement. “DARPA’s performers for GXV-T are helping defy the ‘more armor equals better protection’ axiom that has constrained armored ground vehicle design for the past 100 years, and are paving the way toward innovative, disruptive vehicles for the 21st century and beyond.” The contracts were awarded to Carnegie Mellon University, Honeywell International Inc., Leidos, Pratt & Miller; QinetiQ Inc., Raytheon BBN, Southwest Research Institute, SRI International. The program hopes to develop vehicles that revolutionize wheel, track, and suspension technologies to improve performance on all terrains including slopes; and give occupants high-resolution, 360-degree visualization data, allowing for a closed-cockpit. Other capabilities of interest include the ability to autonomously avoid incoming threats, “vertical and horizontal movement of armor to defeat incoming threats in real time,” and “improved ways to avoid detection” by reducing visible, infrared, acoustic, and electromagnetic signatures, according to DARPA. DARPA reported that the U.S. Army and U.S. Marine Corps have indicated interest in the futuristic vehicle. Establish your company as a technology leader! For more than 50 years, the R&D 100 Awards have showcased new products of technological significance. You can join this exclusive community! Learn more.

Oesch D.W.,Leidos | Sanchez D.J.,Air Force Research Lab
Astronomy and Astrophysics | Year: 2014

Context. Each attempt by the Atmospheric Simulation and Adaptive-optics Laboratory Testbed (ASALT) research group to detect turbulence-induced photonic orbital angular momentum (POAM) has been successful, spanning laboratory, simulation and field experiments, with the possible exception of the 2011 Starfire Optical Range (SOR) astronomical observations, a search for POAM induced by astronomical sources. Aims. The purposes of this work are to discuss how POAM from astronomical turbulent assemblages of molecules or atoms (TAMA) would appear in observations and then to reanalyze the data from the 2011 SOR observations using a more refined technique as a demonstration of POAM in starlight. Methods. This work uses the method of projections used previously in analysis of terrestrial data. Results. Using the method of projections, the noise floor of the system was reevaluated and is found to be no greater than 1%. Reevaluation of the 2011 SOR observations reveals that a POAM signal is evident in all of the data. Conclusions. POAM signals have been found in every instance of extended propagation through turbulence conducted by the ASALT research group, including the 2011 SOR observations. POAM is an inevitable result of the propagation of optical waves through turbulence. © ESO, 2014.

Blasch E.,Air Force Research Lab | Kahler B.,Leidos
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

The Motion Imagery Standards Board (MISB) has created the Video National Imagery Interpretability Rating Scale (V-NIIRS). VNIIRS extends NIIRS to scene characterization from streaming video to include object recognition of various targets for a given size. To apply VNIIRs for target tracking, there is a need to understand the operating conditions of the sensor type, environmental phenomenon, and target behavior (SET). In this paper, we explore VNIIRS for target tracking given the sensor resolution to support the relative tracking performance using track success. The relative assessment can be used in relation to the absolute target size associated with the VNIIRS. In a notional analysis, we determine the issues and capabilities of using VNIIRS video quality ratings to determine track success. The outcome of the trade study is an experiment to understand how to use VNIIRS can support target tracking evaluation. © 2015 SPIE.

Agency: Department of Energy | Branch: | Program: STTR | Phase: Phase II | Award Amount: 1.00M | Year: 2015

"High brightness and high average power Free Electron Lasers known as x-ray FELs, developed by DOE, are intently desired by the scientific community for their unique capabilities and for the opportunities they enable in the medical and biological sciences, such as imaging biological molecules or chemical reactions. Beam optics codes (particularly Particle-in-Cell codes) couple non-uniformity and surface structure to current and emittance in a complex manner and are the de facto tool of choice in device design, but such codes neglect time-dependent contributions to the emission current due to the difficulty of accounting for multiple scattering events on the emission distribution. Such a limitation undermines device design, degrades predictions of performance via simulation, and impairs the ability to account for mechanisms (performance degraders) that can lead to real damage to the larger device (like particle ejection from the beam core, or “halo”). General statement of how this problem is being addressed: An improved simulation capability is proposed that bridges the gap between current capability and that needed to capture the effects needed in simulation to have a predictive capability. New physics models proposed captures the time- dependent (delayed) emission of the photoemission process, as well as the effect of sub-micron geometrical features that have a great effect on intrinsic emittance, which up to now has been predicted within a factor of two from the simulation codes. The new emission models will be joined with a comprehensive of emission physics models already in the MICHELLE code, which includes thermal-field, thermionic, and semiconductor secondary emission models, including the effect of surface roughness, crystal face orientation (leading to variations in work function, etc.), laser irradiance variations, and laser jitter. The effort will package all these models together for application in the MICHELLE code and for use in other beam optics modeling codes. What is to be done in Phase I? Phase I will develop the first generation of the photoemission time-dependent (delayed) emission models. The software architecture will be developed to prototype the combining of all emission models into a central framework and be a stand-alone, separable software entity. That framework will add in the new time-dependent model. The framework will then be implemented into the MICHELLE beam-optics code, and the result tested against other codes. Functioning software will be made available to beta testers and researchers in the DOE community to model high-brightness sources. Commercial Applications and Other Benefits: The application of the DOE future synchrotron light sources and free electron lasers has a very significant benefit to mankind. In the sciences, imaging biological molecules or chemical reactions or even viruses requires a photon flux intensity sufficiently high that the molecules or structures can be “seen” before the sample is destroyed by the energy flux. The structures of man-made nanoscale objects, other molecules, and even that of atoms may be resolved by free electron lasers capable of imaging sub-nanometer regions with sub-picosecond time resolutions. Conventional synchrotron x-ray sources fall short of the requirements because of time resolution limits. Specific examples include resolving ultrafast biochemistry, time-resolved spectroscopy of correlated electron materials, magnetization dynamics, and imaging chemical reactions. High brightness, high rep-rate photocathode sources are likewise one of the two technologies requiring improvement (the other being mirrors) to enable high performance FELs desired by directed energy applications, such as the Navy's Innovative Naval Prototype Free Electron Laser. This effort specifically targets the development of the next generation of such machine by developing a predictive modeling and simulation capability for the electron beam sources. If the project is carried over to Phase II or Phase III, this new capability will be widely available by the software framework to be developed that will fit into many beam optics codes to model such devices. "

News Article
Site: cen.acs.org

Scientists whose NIH grant proposals were left on the cutting-room floor in the current tight federal funding environment may get another chance. The newly announced Online Partnership to Accelerate Research (OnPAR) will give applications that are highly rated by NIH peer review panels yet are unfunded a stab at acquiring support from private organizations. Given historically low federal funding, the proposal is bound to be good news for researchers. “We think it’s a great idea,” says Sherry Mills, director of NIH’s Office of Extramural Programs. OnPAR was developed by Leidos, a contracting company that works with both government and private clients. Employees there had heard about how many top-rated grants weren’t getting NIH funding, explains Jim Pannucci, director of the life sciences operation at Leidos. And they knew that for small nonprofits that fund research, reviewing applications can be time-consuming and expensive. “We realized we can probably do a very good job with this type of matchmaking,” Pannucci says. NIH will not directly provide applications to OnPAR. It will notify unfunded applicants whose scores fall in the top 30%. Researchers can then choose to send their abstracts to OnPAR. Leidos will match abstracts with interested funders, who will then ask for the full grant application and ranking. Salvatore La Rosa, a chemist and vice president for R&D at the Children’s Tumor Foundation, is excited about OnPAR. “What we want to find is a high-risk, high-reward type of proposal that fell off the NIH review.” Right now, OnPAR is in a pilot phase that is limited to seven disease-centered nonprofits, including La Rosa’s group. “It will give us a chance to see the enthusiasm of the community,” Mills says. Leidos has heard from other nonprofits as well as pharmaceutical and biotech companies that are interested, Pannucci says. If all goes well, Leidos wants to expand the system to other federal funding agencies, both in the U.S. and internationally. La Rosa is particularly excited about using OnPAR to connect with pharmaceutical companies or venture capitalists to jointly fund research projects. That would make his group’s limited budget go even further. This also provides a chance to convince more scientists to expand their research areas, he says, possibly to include children’s tumors. “If we find a very interesting application, no matter what, we really want to fund it.”

Discover hidden collaborations