Award Data

Heat exchangers are a used in a commercial, residential, and military cooling systems. Their thermal performance is measured by their ability to efficiently transfer heat. By increasing the heat exchanger efficiency, the size and weight of the system can be reduced. This work explores the use of twisted tape technologies and the use of advanced nanofluids for improving thermal performance. ACT ...

This Small Business Technology Transfer (STTR) Phase 1 project will develop a novel methodology to build atomistically-informed chemical kinetics models for oxidation and pyrolysis in particulate filled-rubber composite materials. In Navy operations, these materials are widely used in extreme temperature conditions and oxidizing environments. Accurate prediction of the material properties under th ...

This Small Business Technology Transfer Research (STTR) Phase II project proposes innovative heat transfer research involving dropwise condensation on a wettability gradient. Dropwise condensation alone has shown the ability to increase condensation heat transfer coefficients by an order of magnitude over film condensation, typical of vertical thermosyphons. Droplets condensing on a gradient sur ...

The aluminum alloys have low density, relatively high strength, and high strength-to-weight ratio, which brings some major advantages in marine structure design, fabrication, and operations. However, marine ships are subjected to a complex and severe loading, and the typical failure mode of aluminum under extreme dynamics loading such as wave slamming and high velocity impact is ductile fracture. ...

Research is proposed for the development and implementation of state of the art computational and experimental tools for the investigation of the impact of control surface freeplay on the flutter and limit cycle oscillation characteristics of two-dimensional and three-dimensional wings in subsonic and transonic flow. Highly efficient and accurate aeroelastic simulation tools will be constructed ba ...

This Small Business Technology Transfer Phase I project is aiming at developing and implementing a multiscale composite model to predict the ceramic matrix composite (CMC) response to the impact loading by foreign objects. In particular, the physics-based model will be applied to describe the multiscale foreign object damage (FOD) phenomena of CMCs due to the complex nature of impact dynamics coup ...

Turbine disks are amongst the most critical components in aero- and naval-vessel engines. They operate in a high pressure and temperature environment requiring demanding properties. Nickel-based supperalloys which have high creep and oxidation resistance at high temperatures are widely used as the material of turbine disks. The elevated-temperature strength of this supperalloy and its resistance t ...

This Small Business Technology Transfer (STTR) Phase II project addresses the creation of tunable radio frequency filters for future wireless devices. The proposed approach combines research on advanced magnetic materials with research on nano-structuring of magnetic and non-magnetic materials with the goal of achieving an order of magnitude or more increase in quality factor (Q) and maximum valu ...

Fine grained BST ceramics with high density has attractive properties including nonlinearity, low dielectric loss and high dielectric breakdown strength to realize high tunability. In Phase I program we demonstrated that modification of powder characteristics and composition in nano BST powder resulted in greater than 65% tunability at 250KV/cm with ~500KV/cm breakdown strength and Q value greate ...

The problem of interest is the development of a physics based model for conducting high-fidelity simulation of afterburning munitions, which are unique in that that they contain solid and/or liquid fuels that continue burning after the initial detonation to raise the temperature, enhance the overpressure, and strengthen secondary shock waves. From the standpoint of first-principles modeling, accur ...