Abstract:Thermal Stir Welding (TSW) provides advancement over the more conventional Friction Stir Welding (C-FSW) process because it separates the primary processes variables thereby allowing independent control of metal stirring and forging from the stir zone temperature. However, the feedback for precise… more
Abstract:Metal Digital Direct Manufacturing (MDDM) or layer-by-layer additive manufacturing is inherently green, produces near net shapes, reduces labor content, and does not require the use of special tooling to fabricate components. However, the process struggles to gain wide acceptance for producing… more
Abstract:Historically, small arms ammunition has been limited in it's performance due to dated projectile designs. Recently, Liberty Ammunition has introduced a novel patented projectile design, which optimizies accuracy, range, hard and soft target perfomance in a single round. This innovation… more
Abstract:The general objective of this proposal is to design a self-stabilized monolithic single frequency solid state laser. The main advantage of the approach is based on the integration of a laser cavity within active laser material - Nd-doped photo-thermo-refractive (PTR) glass, which allows constructing… more
Abstract:The overall goal of the proposed project is to develop a Volume Bragg Grating (VBG) controlled surface emitting laser for pumping of low pressure Rb vapor laser. This approach will provide dramatic decrease of specific volume of a pumping lase system and, therefore, will dramatically decrease the… more
Abstract:ABSTRACT: The objective of the proposed research is to develop a new type of volume holographic elements that can operate in mid IR spectral region. To achieve this goal, research will be directed to a photo-thermo-refractive (PTR) glass which provides a photo-thermo-induced refractive index change… more
Abstract:The objective of this proposal is to extend the technology of chirped pulse amplification in ultrashort pulse lasers based on chirped volume Bragg gratings (CBGs) to higher stretching/ compression ratio and make the device more robust. In Phase I OptiGrate demonstrated high quality stretching and… more
Abstract:The proposed research plan will start at a TRL 1 and commence with the collection of dynamic recoil response field data using a firearm and
ammunition chosen by the DHS for testing. Data will be collected for a firearm operator that classifies as a 90th percentile male, and an operator… more
Abstract:Capacitive energy storage is a critical technology for advanced electronics as well as a necessary technology for the implementation of intermittent, renewable power generation. Innovative and scalable nanofabrication techniques are required to enhance the performance and energy density of… more
Abstract:A significant challenge faced by space-bound experiment packages is the requirement for a minimally controlled environment while a small payload is awaiting launch or is in transit to the International Space Station (ISS). NASA is seeking thermal solutions for the transportation of NanoRack and… more
Abstract:This proposal details the method of fabrication for a hierarchical hybrid nanomaterial for oxygen storage vessels. These vessels exceed the volumetric and gravimetric storage capacity of an oxygen cylinder by 330% and 215%, respectively. It is estimated that this oxygen storage device will weigh… more
Abstract:Mainstream Engineering Corp. (MEC) proposes developing a pyrolytic solid waste remediation system (py-SWRS) for processing mixed solid waste at small contingency base camps. The proposed py-SWRS unit is a scaled-down and simplified version of a portable pyrolysis reactor already under development at… more
Abstract:ABSTRACT: A new generation of supersonic weapons will operate at Mach 3-6. Current radome materials are unable to withstand the heat generated at the temperatures associated with hypersonic flight. Mainstream Engineering is proposing an advanced cooling approach that helps to extend the performance… more
Abstract:ABSTRACT: Using solar energy to drive air conditioning systems is logical since the sun is present when air conditioning is needed the most. Unfortunately, the payback period for installing photovoltaic solar cell arrays to electrically drive the air conditioning system is unacceptably long, at… more
Abstract:Mainstream Engineering Corp. (MEC) proposes developing a diesel engine-generator with nanostructured high-zT thermoelectric exhaust waste heat recovery. Commercially available thermoelectric materials have a thermoelectric figure of merit (zT) of approximately 1. Published efforts to harvest exhaust… more
Abstract:Currently, diesel generators are typically used to supply electrical power to soldiers in the field. Diesel generators suffer from wet stacking at partial loads, high fuel costs and resupply logistics, and high transportation risk. The development of a portable wind power generating system capable… more
Abstract:This proposal addresses the single largest non-propulsion consumer of Navy shipboard power. The heating, ventilation, and air conditioning system of a combatant ship dissipates over 25% of the ships waste heat. However, a growing percentage (up to 87%) of the waste heat is due to equipment loads… more
Abstract:Spherical-lined bearings play a crucial role in the operation of many aerospace applications. They provide connections between structural components experiencing rotating and/or misaligning motion. The inability to accurately measure liner wear on these bearings leads to premature or overdue bearing… more
Abstract:Advancement of thermoelectric (TE) technology has been a major research area for over a century, yet most compositional materials research has not produced TEs with a figure of merit (zT) greater than unity. New methods of enhancing TE efficiency are needed and have been realized through structural… more
Abstract:The thermal management system in the Joint Strike Fighter is sufficient for most flight modes, but in some scenarios where waste heat from avionics and electronics is substantial, and coolant temperature is high, electronics can become overheated. In contrast, during other flight modes, the coolant… more
Abstract:The U.S. Navy is seeking a thermal management solution for the development of an advanced airborne tactical laser. The thermal management system required for the weapon system must be highly integrated with both the weapon system and the demonstration platform. In addition to providing a high… more
Abstract:High power, superconducting electron linear accelerators represent a new method of producing highly focused and bright electron beams (Ebeams). These instruments have exciting applications in the area of free electron lasers and directed energy weapons, but are costly and the two markets are small… more
Abstract:Current refrigerant pumping technology lacks the ability to circulate a liquid-vapor mixture with substantial flow resistance, which impedes development and implementation of two-phase cooling technology. Common pump designs will hydro-lock and mechanically fail instantly or suffer performance loss… more
Abstract:Field Sanitation Centers typically convert 240 gallons of potable water per day into greywater. This greywater must then be transported off-site or properly disposed of on-site. To alleviate this problem, a continuous process to treat the greywater produced is needed. The treated water must meet… more
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