Reynolds number and cowl position effects on the internal shock structure and the resulting performance of a generic three-dimensional sidewall compression scramjet inlet with a leading edge sweep of 45 degrees at Mach 10 have been examined both computationally and experimentally. Prior to the experiment, a threedimensional Navier-Stokes code was adapted to perform preliminary parametric studie...

This report describes three 2400-MW(t) reference point designs for the moltencoolant gas cycle (MCGC), based on the current power conversion unit (PCU) designs for the GT-MHR. A very-high-temperature helium cycle with a 900°C turbine inlet temperature achieves a thermodynamic efficiency of 54% and net electric output of 1300 MW(e), while a low-temperature helium cycle with a 600°C turbine inlet...

We present the design and implementation of Splat, a tool for managing network edge switch ports and port-to-host configurations. We discuss the need for such a tool as part of a major network upgrade, and our discovery that most existing tools ignore this area or approach it from a core network point of view. Important design considerations include the current procedures and habits of our syst...

This paper reports design and development of an innovative compact Stepped Truncated-Circular Waveguide Branching Ortho-Mode Transducer (STCWB-OMT) operating at 4.5–4.8 GHz for horizontal and vertical polarizations. STCWB-OMT is derived by introducing branch waveguide via coupling slot on a stepped truncatedcircular waveguide. This configuration possesses inbuilt rectangularto-circular transiti...

Building complex software architectures can be subject to subtle assemblage errors that are typically not captured by classical type systems available with host programming languages such as Java, C#, or ML. Our real-life motivating example is the Dream component-based framework, that has been developed to facilitate the construction of configurable communication subsystems. To avoid assemblage...

We report on evanescently coupled rectangular microresonators with dimensions up to 20 × 10 μm2 in silicon-on-insulator in an add-drop filter configuration. The influence of the geometrical parameters of the device was experimentally characterized and a high Q value of 13,000 was demonstrated as well as the multimode optical resonance characteristics in the drop port. We also show a 95% energy ...

The aerodynamic loads on a Canard Rotor/Wing vehicle are investigated using inviscid numerical simulations in order to understand the flight characteristics of the vehicle during conversion from rotary to fixed-wing flight. A series of numerical simulations at seven azimuthal rotor indices are presented covering a quarter turn of the rotor. With symmetry arguments, these simulations produce 25 ...

Large-eddy simulations of stable and unstable ramjet operational modes are presented for an axisymmetric inlet-isolator-combustor configuration experimentally tested in the University Illinois's ACT-II arc-heated combustion tunnel. A 32 species ethylene oxidation mechanism including nitrous oxide formation reactions is used calculations (HyChem FFCM 2.0). Conjugate heat-transfer models based on...