Award Data

"The proposed Phase 2 program focuses on the development of Powered Resonance Tube (PRT) actuators for application to Active Flow Control (AFC). For effective control across the full operating envelope of an air vehicle, high bandwidth and authority arerequired. In Phase 1, a new variable-frequency PRT actuator concept was developed and its feasibility was demonstrated. In Phase 2, the new actu ...

"Flight demonstration of modern stealthy aircraft with an active flow control system is an important, complex, and challenging opportunity. The probability of success is maximized by a progressive plan in which complexity is introduced gradually. Wepropose a plan that includes flight testing of a simple system in Phase I and progressing to a multi-axis demonstration in Phase II. The proposed pr ...

"A system that integrates the use of zero frequency and high frequency flow control is proposed to reduce aero-optic distortions by minimizing large-scale shear layer structures. An important measure of performance for a tactical laser system is theintensity of the beam on a target. The performance of these systems is degraded by index of refraction variations introduced by large-scale flow stru ...

"FlesSys Inc. and the University of Michigan propose to develop and validate the performance of an active mechanical flow control device based on advanced complaint strictures technology. During STTR Phase I, PlexSys Inc (dba Mechnanical Compliance Inc.)has successfully developed a Gigh-Frequency Mechanical Vortex Generator by combining a compliant displacement-amplifier with a coice-coil generato ...

The potential for combustion instability has historically been a hindrance in developing rocket engines, and nearly always represents the major technical risk in engine developments. This proposal addresses innovative approaches toward prediction of liquid rocket engine combustion instability, as well as innovations in full-scale engine stability verification. Specific objectives are to demonstrat ...

We propose the development of a general software infrastructure for simplifying the integration of computer-game software with cognitive modeling tools. The software is designed to meet the requirements of two state-of-art cognitive models, one focused on spatial reasoning, the other on visual imagery. The approach extracts visual scene information from a computer game, represents it in a common ...

Successful completion of the proposed Phase I work outlined and follow-on Phase II work will provide a system to rank existing materials and coatings for severe wear applications. In addition, the ranking system can be utilized to identify desirable properties in new materials and/or coatings that could be developed for specific severe wear applications. The validated system resulting from the Ph ...

ABSTRACT: This proposal is concerned with the development of a novel failure initiation and progressive failure analysis modeling method for advanced composite structures, including the analysis of selected structural joints utilizing a statistically based micromechanics model embedded in a 3D non-linear finite element code. The method accounts for the interaction between out-of-plane failure and ...

Could the future military use of UAV create a revolution in military affairs as great as the introduction of the airplane or the tank? Is the revolution underway now? If so, how can we best prepare our military for success? The advent of Unmanned Aerial Vehicles (UAV) is once more changing present and future aerial warfare. The configuration, deployment, and face of the United States Air Force ...

The objective of this program is to build upon many decades of experience with magnetic flowmeters to develop a next-generation system to measure the burning surface admittance of high-energy-density solid propellants at high frequencies and pressures. Using the results of research on solid propellant rocket motor combustion instability from the past fifty years, one can directly measure the ac ...