Award Data

The prediction of laminar-turbulent transition of hypersonic boundary layers is critically important to the development of hypersonic vehicles that are to be used for rapid global access. Boundary layer transition has first-order impacts on aerodynamic heating, as well as drag and control of hypersonic vehicles. The success of transition and related heating prediction relies on the good understand ...

Polaris Sensor Technologies is proposing to use quantum dot technology that has been  recently developed which has the ability to tune the spectral response of a sensor in real-time.   In the Phase I we will study the feasibility of integrating such a focal plane to either fixed or adaptive polarization capability.  The adaptive polarization capability would be based on dynamically controllabl ...

A key limitation in the use of silicon carbide based composites (SiC/SiC) in the next generation turbine engines is their poor oxidation resistance and SiO2 recession at high temperatures particularly in the presence of water vapor.   The primary objective of an environmental barrier coating (EBC) is to provide the necessary protection to SiC/SiC composites from water vapor attack and to reduce ...

In this Phase I STTR program, the project team will develop a mathematical model for the hydrogen permeation inhibiting efficiency for various metals and alloys.  Experiments based on the Devanathan-Stachurski method will be used to determine the models kinetic parameters, which control hydrogen permeation.  The hydrogen entry efficiency and effectiveness of electrodeposited, nanostructured laye ...

This proposal covers investigating and optimizing superconductor cable configuration designs and various cooling methods for lightweight airborne power cables. During this program we will be modeling several types of superconducting cable configurations and design parameters for optimizing the system weight and volume as a function of cable length.  We will study the trade-offs among the influenc ...

The proposal addresses the issues related to the design of a MW class DC or AC current transmission line suitable for use onboard of an aircraft. The main questions are the amount of losses in such a line and the efficiency, weight and overall size of the whole system. The key issues that are addressed in the proposal are the amount of AC losses in the superconducting line and the heat losses in t ...

The primary objective of the proposed work is to develop and validate a transferable force field that will allow for reliable, accurate and efficient prediction of thermodynamic (heat of vaporization, surface tension, density, melting temperature), transport (viscosity, ionic and thermal conductivity, self-diffusion coefficients) and structural properties for a wide variety of ionic liquids (ILs) ...

A unified project comprising basic research and technology development is proposed to address all important issues critical to the design, fabrication, testing, and implementation of an integrated micro thruster and power-generation system. This program will fully utilize the state-of-art and projected technologies in the areas of energy conversion and micro fabrication. A novel design of the igni ...

In the Phase I STTR work, YAG (yttrium aluminum garnet) was identified as the superior choice for use as a UV-VIS window in advanced propulsion applications, based on measured properties and literature data.  YAG provides a better combination of retained high temperature strength, creep resistance, optical isotropy and resistance to neutron irradiation.  The Phase II STTR program is focused on t ...

In this STTR project, an efficient and high-fidelity computational module to predict non-gray radiative transfer will be developed and validated. The proposed hybrid approach to solve the radiative transport equation (RTE) is a combination of the spherical harmonics (PN) method and the Monte-Carlo method. Non-gray gases will be treated using the full spectrum correlated k-distribution (FSCK) metho ...