Abstract:It is well known that the brain is the organ most sensitive to ischemia/hypoxia. Noninvasive continuous monitoring of cerebral blood flow autoregulation, cerebrovascular reactivity and related phenomena such as cerebral vasospams in combat casualties could guide clinicians/medics in adjusting the… more
Abstract:Boron carbide (B4C) ceramic is one of the hardest materials available and, in the form of a fiber composite, it is expected to improve ballistic performance of personal armor and armored vehicles. Due to the nature of its covalent bond, it is very difficult to manufacture full density boron carbide.… more
Abstract:Command of the littoral environment is advantageous for the warfighter. Remote characterization of the littoral region is an asset to mission planners. Characterization includes providing bathymetry, currents, and probability of deployed mines or obstacles deterring beach landings of US Navy… more
Abstract:ABSTRACT: The Air Force is currently replacing chrome plating with High Velocity Oxygenated Fuel (HVOF) applied tungsten carbide-cobalt (WC-Co and WC-Co-Cr) coatings. These coatings require diamond wheels for finish grinding the HVOF coatings as well as aluminum oxide grinding wheels for base metal… more
Abstract:ABSTRACT: Landing gear components manufactured from high strength steel alloys require sacrificial protective coatings to perform safely in service. Cadmium has been the standard coating for such components for decades, but is a known carcinogen and has been targeted for elimination by the USAF. … more
Abstract:This Small Business Innovative Research (SBIR) Phase I project is focused on the development of a chemical treatment for bast natural fibers called "In-Situ Polymeric Coating (IPC)". An IPC coating will enable kenaf, flax, jute and/or other bast natural fibers to replace fiberglass in… more
Abstract:ABSTRACT: The quenching of metallic aircraft parts produces residual stresses and distortion that increase subsequent manufacturing costs and reduced component performance. Manufacturers seek to control these residual stresses through design of the quench process. In this proposal, AltaSim… more
Abstract:This Small Business Innovation Research (SBIR) Phase 1 project will demonstrate a novel micro-scale thermal management concept for removing waste heat generated in the active regions of a pulsed semiconductor device. In these devices, each duty cycle consists of a period of heat generating pulse on… more
Abstract:This Small Business Innovation Research (SBIR) Phase II project will develop an advanced heat sink and a two-phase pumped loop for cooling high power laser diodes and other high heat flux devices. An advanced coating will be applied to the heat sink to enhance the boiling process, suppress flow… more
Abstract:This Small Business Innovation Research (SBIR) project proposes the development of a computational software package to provide NASA with advanced materials development capabilities for existing and new ablative materials used in the next generation thermal protection systems (TPS) of space vehicles.… more
Abstract:The overall program objective is to develop a high-temperature passive thermal management system for the Radioisotope Power Conversion system that energizes the refrigeration system applicable to Venus missions. The innovation consists of a high temperature alkali metal variable conductance heat… more
Abstract:Future Lunar Landers and Rovers will require variable thermal links that can reject heat during daytime, and passively shut-off during lunar night. During the long lunar day, the thermal management system must remove the waste heat from the electronics and batteries keep them within the acceptable… more
Abstract:While continuously increasing in complexity, the payloads of terrestrial high altitude balloons need a thermal management system to reject their waste heat and to maintain a stable temperature as the air (sink) temperature swings from as cold as -90<SUP>o</SUP>C to as hot as… more
Abstract:Grooved aluminum/ammonia Constant Conductance Heat Pipes (CCHPs) are the standard for thermal control in zero-gravity. Unfortunately, they are limited in terms of their heat flux capability, approximately 5W/cm2. Incident heat flux for laser diode applications is on the order of 5-10W/cm2,… more
Abstract:The VASIMR propulsion system uses a high temperature Loop Heat Pipe (LHP) radiator to reject heat from the helicon section. The current baseline radiator uses titanium/water LHPs, however, deployable radiator and trace heating features are required to keep the water in the condenser from freezing… more
Abstract:This Phase I project aims to increase the reliability of radio frequency (RF) devices used in accelerator facilities by reducing/eliminating corrosion and erosion produced from the high purity de-ionized water cooling systems. Although metal interconnects are the required for electrical and thermal… more
Abstract:In 2005, commercial and residential Heating, Ventilation, and Air Conditioning (HVAC) systems represented 518 billion kWh of energy consumption in the United States, which amounts to 8% of the total energy produced that year. In addition, producing this power resulted in the release of 465 MMTCO2e… more
Abstract:It is well established that prolonged operation at high junction temperatures reduces the lifetime of LEDs, significantly undermining one of the main benefits of LED lighting systems. Despite advances in LED device technology, a significant fraction of the electrical energy input is wasted as heat.… more
Abstract:The overall goal of this Phase II project is to develop a prototype of a thermochemical reactor for the production of syngas (a blend of hydrogen and carbon monoxide) using water and carbon dioxide as the reactants. New materials will also be screened for their ability to reduce the reactor… more
Abstract:Advanced Cooling Technologies, Inc. (ACT) is proposing to develop a pump capable of moving a two-phase fluid against large pressure gradients. This pump will accept fluid at any quality and will maintain outlet pressure regardless of inlet quality variation. Pumping will be provided by… more
Abstract:The Non-Lethal Direct Energy Weapon (NLDEW) system, including ADT and RF Vehicle Stopper, has significant cooling requirements that can be addressed by mechanical refrigeration systems. These include cooling of various high powered ADT solid state array or RF vehicle stopper vacuum microwave power… more
Abstract:Advanced Cooling Technologies, Inc. (ACT) proposes an innovative heat exchanger integrated with thermoelectric devices to achieve 10-15 kW additional cooling capacity to the current Liquid Cooling System (LCS) aboard the E2-D Advanced Hawkeye. The proposed heat exchanger will reduce the cold side… more
Abstract:This Small Business Innovative Research Phase II project will develop and demonstrate a passivation process that will result in a pin-hole free protective coating for nickel-gold (Ni/Au) plated copper micro-channel coolers (MCC) used for laser diode thermal management. This proposed approach will… more
Abstract:ABSTRACT: The Full Authority Digital Engine Control (FADEC) controls engine operation. This SBIR Phase II project will develop a thermal management system for the FADEC that includes four components: 1. Active cooling to reject the FADEC waste heat to higher temperature heat sinks, 2. Heat pipes… more
Abstract:This Small Business Innovation Research (SBIR) project will develop and ready for commercialization a scalable, low-cost process for purification of water containing Contaminants of Emerging Concern (CECs) using anodic oxidation with boron-doped ultrananocrystalline diamond (UNCD®) thin films. … more
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