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SBC: Los Gatos Research Topic: N10AT042
Aging aircraft commonly suffers from several types of degradation including fatigue cracking and lack of bonding. It is virtually impossible to predict degradation in structural performance or when a component or structure will fail due to the inability to test new material systems under all loading conditions and under all environmental conditions. A material state awareness system using minimali ...STTR Phase I 2010 Department of DefenseNavy
A Fast-Response, Electronically Controlled Fuel Injection System for Small Heavy Fuel Engines with Multi-Fuel CapabilitiesSBC: MAINSTREAM ENGINEERING CORP Topic: N10AT033
Advances in electronically controlled injection technologies for diesel engines have provided a method to improve medium- to heavy-duty engine performance through increased injection pressures, multiple injections, and injection rate shaping. Although these injection systems have been primarily limited to larger engines, the ability to rapidly and precisely meter fuel for smaller engines is partic ...STTR Phase I 2010 Department of DefenseNavy
SBC: MAINSTREAM ENGINEERING CORP Topic: N10AT037
In miniature gas turbines for UAV applications, traditional bearings exhibit a typical lifetime of only 25 hours due to excessive axial loading. Mainstream proposes to use a passive, permanent magnet thrust bearing to alleviate this problem and increase service life to over 1000 hours. Since this type of bearing is non-contacting, it can operate at very high rotational speeds with minimal heat gen ...STTR Phase I 2010 Department of DefenseNavy
SBC: MAINSTREAM ENGINEERING CORP Topic: OSD09T002
Military shelters currently use electrically driven Environmental Control Units (ECUs) to provide cooling for the air inside the shelter. The ECU is vapor compression cycle powered by a diesel generator, operating on JP-8 fuel. Other than fueling jet engines, the largest drain on U.S. military fuel supplies in current operations comes from running generators at forward operating bases. In hot cli ...STTR Phase I 2010 Department of DefenseNavy
SBC: Materials Technologies Corporation Topic: N10AT003
Free-play nonlinearity of the control surfaces has a direct impact on aircraft’s dynamic stability characteristics. . It is impossible to design and manufacture a control surface with zero free-play. As control surface free-play increases, tighter limits must be imposed on the aircraft mission capability. Typically, researchers have utilized an oversimplified piecewise-linear torque-rotation rel ...STTR Phase I 2010 Department of DefenseNavy
SBC: MATHEMATICAL SYSTEMS & SOLUTIONS, INC. Topic: AF09BT18
We propose algorithm development and efficient GPU implementation of numerical PDE solvers based on four novel high-order methodologies: 1) High-order Discontinuous Galerkin approaches, 2) Fast High-Order boundary integral methods, 3) Convergent FFT-based methodologies for evaluation of computational boundary conditions, and 4) Fourier Continuation methods. These methodologies are applicable to a ...STTR Phase I 2010 Department of DefenseAir Force
SBC: MATHEMATICAL SYSTEMS & SOLUTIONS, INC. Topic: AF09BT13
The present text proposes development of efficient, accurate and rapidly-convergent algorithms for the simulation of propagation and scattering of electromagnetic fields within and around structures that (i) Consist of complex combinations of penetrable materials as well as perfect and imperfect conductors, and, (ii) Possess complex geometrical characteristics, including open surfaces, metallic c ...STTR Phase I 2010 Department of DefenseAir Force
SBC: MAXENTRIC TECHNOLOGIES LLC Topic: MDA09T003
The United States Missile Defense Agency (MDA) is searching for a software-defined multi-channel radar receiver that would provide improved performance and added flexibility over currently deployed radar systems. In response, MaXentric is proposing a system codenamed MASR (Manycore Adaptive Software Radar). The MASR system is composed of a hierarchy of X-band front-ends, high-speed digitizers, F ...STTR Phase I 2010 Department of DefenseMissile Defense Agency
Theoretical Innovations in Combining Analytical, Experimental, and Computational Combustion Stability AnalysisSBC: METACOMP TECHNOLOGIES INC Topic: AF09BT38
The occurrence of combustion instability has long been a matter of serious concern in the development of liquid-propellant rocket engines due to the high rate of energy release in a confined volume in which energy losses are relatively small. Shear layer instabilities and intermittent growth rates of the mixing layer cause fluctuations in the burning rates and result in acoustic waves triggering ...STTR Phase I 2010 Department of DefenseAir Force
SBC: METACOMP TECHNOLOGIES INC Topic: MDA09T009
The occurrence of combustion instability has long been a matter of serious concern in the development of liquid-propellant rocket engines due to the high rate of energy release in a confined volume in which energy losses are relatively small. Positive feedback between the acoustic waves and unsteady combustion could lead to the destruction of an engine in a fraction of a second. The situation is ...STTR Phase I 2010 Department of DefenseMissile Defense Agency