Award Data

This research focuses on fully developing energy density sensors that will yield a significant benefit both for measurements of interest to NASA, as well as for general acoustic measurements. Previous research has developed prototype energy density sensors. The Phase I research will focus on developing effective calibration techniques for these probes, testing and validating the probes to identify ...

This STTR Phase I project will establish the feasibility of an innovative manufacturing process to fabricate a range of unique hafnium/silicon based carbide composites and material systems that cannot be processed using conventional techniques. These materials are expected to have a host of unique mechanical and thermal characteristics making them highly suitable for ultrahigh temperature aerospac ...

Time simulation of a nonlinear aerodynamics model (NA) developed at Virginia Tech coupled with a nonlinear structure model (NS) is proposed as a design/analysis methodology for highly flexible HALE/morphing aircraft. With this nonlinear aero-structure (NAS) approach, large structure deformations and static/dynamic aeroelastic responses of such flexible aircraft can be properly accounted for inclu ...

Fuel cell air handling systems require clean and contaminant-free inlet air, which dictates that oil-free, motorized, compressor/expander systems should be used. Although there is no sliding contact in the steady state operation of the foil bearing, occasional contact between the foil and journal surfaces at startup and shutdown and during overload situations, could limit the bearing life. There ...