Abstract:The advanced properties achieved by modern ceramic matrix composite (CMC) structures depend critically on the surface condition of reinforcement materials used in the manufacturing process. Contamination of reinforcement surfaces can result in brittle phases, low melting point eutectics, or foreign… more
Abstract:Sand and dust ingestion can be a significant issue for military aircraft operating in desert environments. For gas-turbine engines, ingested sand erodes engine components such as turbine blades, accelerating engine wear. Currently, no operational systems exist for tracking sand and dust loading in… more
Abstract:Cabling faults can be difficult to identify and locate when a large number of interconnections are used such as in the shipboard Machinery Control System. Ungrounded systems further complicate diagnosis, since signal voltages and currents are small amplitude. It often takes a considerable amount of… more
Abstract:Instrumented manikins are used to assess the risks of burn injuries and evaluate the ability of clothing and other protective equipment to mitigate the injury potential during compartment or flash fires or other thermal threats. Recent data indicate that fabric stresses due to body motion are… more
Abstract:Advanced underwater vehicles (unmanned underwater vehicles (UUVs), torpedoes, etc.) are key to achieving long-term objectives for undersea force projection and surveillance. Existing battery-based power systems for these vehicles do not meet mission requirements due to low energy density,… more
Abstract:Industrial medium-voltage capacitor charging converters are currently limited in applicability for future Electromagnetic Rail Gun (EMRG) systems by low-power density, undesirable charging profiles, and incompatibility with shipboard DC voltages, liquid cooling, EMI, shock, and vibration… more
Abstract:A method is needed to rapidly and reliably make low-resistance connections between high-temperature superconducting (HTS) tapes. These tapes are used in cables for Navy degaussing and power distribution systems. Superconducting cables are smaller, lighter, and more efficient than the copper cables… more
Abstract:The MK-48 torpedo requires a temporary crossover power supply until main engine activation and alternator power becomes available. Due to the low energy density, high cost, and deteriorating availability of presently used thermal batteries, a suitable replacement power source using innovative energy… more
Abstract:The Navy requires improved methods for passive rangefinding using imagery obtained from photonics masts. Present passive ranging methods rely on manual measurement of object size requiring some advance knowledge of vessel size. Creare proposes development of a passive rangefinding algorithm that… more
Abstract:Legacy copper-based power distribution and degaussing cables will not be able to meet the future requirements of Navy ships and submarines. While cable systems employing high temperature superconductors (HTS) have the potential to meet this need, further development work is required to improve the… more
Abstract:Landmines and buried improvised explosive devices (IED) represent a clear and present danger to the modern U.S. warfighter. The ability to survey a potentially hazardous area from the air using an unmanned aerial vehicle (UAV)-mounted optical acoustic system has the potential to greatly reduce… more
Abstract:ABSTRACT: Advanced space-borne infrared detectors require cooling in the 10 to 20 K temperature range. Cooling loads will be approximately 0.25 W to 1.0 W for the detectors, with additional loads at higher temperatures for other subsystems. A multistage cooler, capable of providing refrigeration… more
Abstract:ABSTRACT: Combustion stability is critical to the performance of augmented military jet engines. Instabilities such as screech can result in reduced augmentor performance, blowout, or even catastrophic failure. Screech remains a difficult problem to predict and mitigate, and its occurrence can… more
Abstract:ABSTRACT: Advanced space-borne electro-optical payloads require cooling at temperatures of 10 to 20 K. Cooling loads for these detectors will range from 0.25 W to 1.0 W at the primary load site, with additional loads at higher temperatures. During this program, we propose to build and test a… more
Abstract:ABSTRACT: Combustion instabilities, such as screech, are an ongoing challenge for augmented military propulsion systems. Diagnostics that elucidate the mechanism(s) of combustion instability are needed to increase the robustness of current engines and to develop improved design rules for future… more
Abstract:Providing power for dismounted soldiers on long-duration missions remains a critical technical challenge. Polymer electrolyte membrane (PEM) fuel cells convert hydrogen fuel directly to electric power and offer a lightweight and efficient power source for individual soldiers. However, technology for… more
Abstract:Neuroscience is rapidly expanding beyond its traditional role in the clinic to a practical method of evaluating cognitive performance in the field. The transition of clinical neuroscience tools into operational environments is of particular interest to the military due to the need for soldiers to… more
Abstract:Superconducting electronics have the potential to revolutionize digital communications and to improve real-time situational awareness in the battlefield environment, but must operate at cryogenic temperatures. Commercial cryogenic refrigerators are large and inefficient and are unable to meet… more
Abstract:Protective suits that isolate a marine from the environment can also build up excessive internal heat and humidity, impairing performance and possibly leading to heat casualties. We propose to develop an innovative environmental control system that will maintain a cool, dry environment inside… more
Abstract:Creare proposes a cost-effective upgrade to the Navy"s helmet for helicopter aircrews that will improve the hearing protection provided by this device. The upgrade will be engineered for the higher noise levels expected in the new CH-53K heavy-lift helicopter. We will focus on maximizing the… more
Abstract:Hydrothermal vents emit large amounts of hot water, which has the potential to produce electric power. This type of power source can enable remote sea sensors, recharge autonomous underwater vehicles, and facilitate a variety of deep sea activities. Developing a power system for this application is… more
Abstract:Marine gas turbine engines are typically 30 to 40% efficient at full power resulting in 60 to 70% of the input energy being exhausted to the environment as waste heat. These engines are even less efficient at partial power conditions where they often operate. Bottoming cycles, such as organic… more
Abstract:The Army uses Unattended Ground Sensors (UGS) for the location and tracking of enemy soldiers and vehicles. The sensors can often determine range and relative bearing to the signal source, but without knowing its own orientation, these data cannot be converted to source geo location and ground track… more
Abstract:The targeting accuracy of mortar rounds is critically dependent on obtaining accurate gun barrel azimuth and elevation data to feed to the fire control system. Current barrel attitude determination is not sufficiently accurate and requires manual readouts. Creare proposes to build a sensor for the… more
Abstract:Upgrades to the Bradley and Stryker vehicles and concepts for a next-generation ground combat vehicle require substantial expansion of the electrical power generation and distribution system. The upgrades must be implemented within very tight spaces, and this requires technology advances such as… more
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