Mohawk Innovative Technology, Inc. is an American product and research and development technology company that develops oil-free foil bearings, magnetic bearings and non-contacting foil seals for high-speed rotating machinery, such as gas turbine engines, turbochargers, compressors, cryogenic pumps, variable high-speed motors/generators and machines. Wikipedia.
Mohawk Innovative Technology, Inc. | Date: 2013-07-24
A foil journal bearing applicable to high speed machining and grinding machines for machining microscopic features. A single foil is secured to and supported by a hollow, generally cylindrical, housing. The foil has a length substantially equal to twice the interior circumference of the housing and a mounting feature, extending across its width, for engagement with a feature of complementary shape in the housing. One portion of the foil has a length approximately equal to one half of the foil length, and comprises a bump foil and a plurality of regions comprising groups of generally uniformly-spaced ridges and flats, the regions being separated by extended flat regions. The other portion of the foil has a length approximately equal to one half of the foil length, and comprises the top foil and is generally flat and overlies the bump foil which overlies the interior of the housing.
Agency: Department of Energy | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 150.00K | Year: 2014
The goal of this SBIR research is to demonstrate the feasibility of using Korolon TBC in hot gas path components of gas turbines through mechanical and thermal characterization of the coating and feasibility study of a novel micromachining technology for drilling the cooling holes. Korolon is a novel coating that has a similar thermal conductivity as the currently used zirconia and is more erosion resistant. Our coating has been evaluated for corrosion and durability at elevated temperatures and harsh environments. The coating is applied at room temperature and cured at elevated temperatures. This novel coating is deposited directly on Ni-based superalloys without the need for a bond coat. In Phase I, we propose to determine the coating thickness needed for turbine applications, modify the coating deposition process to allow deposition of thick coatings, evaluate coating/substrate adhesion strength and perform limited thermal conductivity tests to verify the thermal properties. Additional thermal and durability testing will be performed in Phase II. Coated test coupons will be subjected to thermal cycling tests in Phase II and the coating durability will be evaluated through several tests such as erosion and indentation by sharp indenters. The coating deposition process will be further optimized and final coating composition will be applied to turbine blades, and will be evaluated with an industrial or government laboratory partner in Phase II. Another important issue that will be investigated further in Phase II is micromachining of cooling holes and patterns using the recently developed MiTi ultra high speed micromachining system. This system is capable of microgrinding of small 0.1 to 1.0 mm features and through holes at speeds near half a million rpm in metals and ceramics. Commercial Applications and Other Benefits: The use of more efficient and durable thermal barrier coating will lead to increased engine efficiency by maximizing inlet temperature and/or reducing the amount of cooling air required for airfoils. The increased engine efficiency translates to reduction of fuel usage, thus reducing our reliance on imported fossil fuels and preserving our natural gas resources. The coating technology developed in this program will have several civilian and military applications, aside from gas turbine engines.
Agency: Department of Defense | Branch: Missile Defense Agency | Program: SBIR | Phase: Phase II | Award Amount: 999.70K | Year: 2015
The objective of the Phase II proposed effort is to design and demonstrate the ability to develop a high-speed composite flywheel-based Electromechanical Battery (EMB), to support deployment of high energy laser (HEL) technology for missile defense. The Phase I design studies assessed the EMB size, operating speeds and material requirements needed to achieve the energy density levels and charge/discharge rates and defined the power electronics and supporting foil bearings. Under Phase II, the EMB manufacturing approach will be validated through high speed testing, and overall system layout will be designed, with a goal to minimize system footprint and weight. To achieve the desired power and energy densities in a composite flywheel operating at surface speeds in excess of 1000 m/s in a low pressure, high g-force environment, such as those found in high altitude flight, will require robust, well damped and low loss bearings. The subcontractor will produce the composite flywheel structure and power electronics, while MiTi will be responsible for bearings, system integration and bench testing. Approved for Public Release 15-MDA-8169 (20 March 15)
Agency: Department of Defense | Branch: Navy | Program: STTR | Phase: Phase II | Award Amount: 488.74K | Year: 2015
The university and industrial team assembled by MiTi proposes to demonstrate the viability of using an advanced low cost out of autoclave composites manufacturing process for application to high speed composite flywheel energy storage systems. Besides conducting appropriate materials testing of the new process, testing of a high-speed titanium flywheel simulator system weighing over 200 lbs will be operated to demonstrate the capabilities of the shock tolerant foil bearing support system while spinning. Finally, fabrication and test of a prototype wheel using the out of autoclave process will be conducted
Agency: Department of Energy | Branch: ARPA-E | Program: SBIR | Phase: Phase I | Award Amount: 225.00K | Year: 2015
The team of Mohawk Innovative Technology Inc., (MiTi), University of Texas – Center for Electro-Mechanics and MITIS of Belgium propose a truly transformative, ultra-high-speed and oilfree, Hyperlaminar Flow Engine (HFE) system that combines low cost viscous shear driven compressor and expander, an integrated low pressure drop recuperator, flameless combustor, permanent magnet generator, lubricant free air foil bearings, advanced power electronics and thermoelectric generator elements to meet the needs of a residential combined heat and power (CHP) plant with 40% electrical efficiency, 2kW total capacity (50/50 thermal/electrical) with low NOx and CO2 emissions (estimated at 4.1E-5 lb/MW-h, and