Abstract:Future space exploration missions require advanced thermal control systems (TCS) to dissipate heat from spacecraft, rovers, or habitats to external environments. We propose to develop a lightweight, reliable TCS to effectively maintain cabin and equipment temperatures under widely varying heat… more
Abstract:In situ resource utilization (ISRU) is essential for several of NASA's future flagship missions. Currently envisioned ISRU plants include production of oxygen from hydrogen reduction of lunar regolith and extraction of water from Martian regolith or asteroid material. These ISRU processes… more
Abstract:ABSTRACT: Inspection of machined composite laminate parts is currently performed using a precision milling machine (PMM) to maneuver a touch probe. When performed on complex parts, this inspection process is extremely time consuming and ties up the PMM for longer time periods than the actual… more
Abstract:ABSTRACT: Future airborne imaging sensors will utilize next-generation focal plane technology that must operate at temperatures from 25 to 30 K. Passive cooling techniques such as stored cryogens are heavy and logistically undesirable. Current airborne cryocoolers are too inefficient in this… more
Abstract:ABSTRACT: CubeSats provide a new, low-cost platform for space weather missions. They enable new mission paradigms, such as the ability to perform multiple measurements of the same physical phenomena globally from several satellites, in contrast to high accuracy measurements of multiple phenomena… more
Abstract:ABSTRACT: The efficient, effective balancing of jet engine rotors and subassemblies continues to be a challenge for key aerospace applications. While manufacturing methods for balancing have improved significantly over the last ten years, measurement methods and procedures and fixturing have not… more
Abstract:ABSTRACT: Next-generation thermal management systems in advanced aircraft must utilize all available heat sinks, including fuel, ram air, and bleed air flows to effectively manage aircraft thermal loads. To this end, we propose to develop a compact, highly integrated condenser to prevent heat… more
Abstract:ABSTRACT: Dual-mode scramjet engines must operate over a wide range of flight Mach numbers. Closed loop engine control is necessary to maintain thrust and flame stability while preventing unstart over the large flight envelope. High-frequency sensors and actuators will be a key component of… more
Abstract:Small manned and unmanned aircraft need advanced propulsion technology to increase mission capabilities and improve reliability. We propose to develop an innovative recuperator technology that can significantly reduce fuel consumption for small gas turbines. Our microchannel recuperators are built… more
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
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