Award Data

A novel approach is proposed for the suppression of the aircraft's structural vibration to increase the resilience of the flight control law in the presence of the aeroelastic/aeroservoelastic (AE/ASE) interactions. Currently aircrafts with non-adaptive control laws usually include roll-off or notch filters to avoid AE/ASE interactions. However, if changes in the aircraft configuration are signifi ...

N/A

Long-life, high-capacity cryocoolers are a critical need for future space systems utilizing stored cryogens. The cooling requirements for planetary and extraterrestrial exploration missions, Crew Exploration Vehicles, extended-life orbital transfer vehicles, and space depots will range from 10 to 50 W at temperatures between 20 and 120 K. Turbo-Brayton cryocoolers are ideal for these systems bec ...

High current hollow cathodes are the baseline electron source for next generation high power Hall thrusters. Currently for electron sources providing current levels >50 A and cathodes utilizing LaB6 emitters, the only viable, long life heater technology is a low reliability, low producibility, multi-element heater constructed from MgO insulated coaxial heater cable. In the Phase I project we wil ...

We propose new concepts for developing components for high performance space based Lidar systems. While it is generally recognized that photonic crystal fiber technology can extend the performance range of fiber laser based sources these fibers are considered by many to be incompatible with complementary component technology such as fused couplers and pump combiners. Integration of these fibers i ...

The proposed effort will combine a low cost physical modeling approach with inductive, data-centered modeling in an aerosopace relevant context to demonstrate effective, low cost data mining. In particular Phase I will evaluate various hybrid architecture concepts on the basis of false positive and fasle negative rates. The approach will use domain decompostiition to partition the physical pla ...

The proposed program will develop an hermetic, CTE matched, thermal shock resistant ceramic packaging technology that will facilitate the operation of Si and SiGe devices at extreme temperatures (-230ºC to 130ºC) encountered on the Moon and Mars. Processes to assemble the components into a hermetically sealed package will be identified and developed. Process and materials capability will be de ...

The concept development and test of a water-based, advanced Phase Change Material (PCM) heat sink is proposed. Utilizing a novel material choice for both an expansion diaphragm and the PCM case itself, the PCM can accommodate both the expansion of the freezing water-based material and very low temperature of approximately -250F. The water-based PCM itself would be non-toxic and non-flammable, bu ...

Software testing is a complex and expensive phase of the software development cycle. Effective software testing is especially important in mission-critical software, where erroneous behavior poses a risk to safety or mission success. Automated test case generation can make testing more efficient and effective, saving resources and reducing risk. Safeware Engineering Corporation proposes to deve ...

There are several ongoing challenges in non-contacting blade vibration and stress measurement systems that can address closely spaced modes and blade-to-blade variations (mistuning). Traditional NSMS systems are applicable but have limitations due to the undersampling that is inherent in time-of-arrival data processing and the uncertainty that is introduced by inferring, as opposed to calculating ...