Recent developments of the aerodynamics models for the comprehensive analysis CAMRAD II are described, particularly the unsteady aerodynamic models and dynamic stall models, and the free wake geometry calculation. Three models for the unsteady aerodynamic loads in attached flow are implemented: from incompressible thin-airfoil theory, from ONERA EDLIN, and from Leishman-Beddoes. Five dynamic st...

The present paper describes an experiment performed in a transonic wind tunnel facility where a new test section has been developed especially for the investigation of the unsteady flow above oscillating airfoils under dynamic stall conditions. Dynamic stall is characterized by the development, movement and shedding of one or more concentrated vortices on the airfoils upper surface. The hystere...

Fuel cell gas turbine hybrid systems have achieved ultra-high efficiency and ultra-low emissions at small scales, but have yet to demonstrate effective dynamic responsiveness or base-load cost savings. Fuel cell systems and hybrid prototypes have not utilized controls to address thermal cycling during load following operation, and have thus been relegated to the less valuable base-load and peak...

Dynamic stall has been a technical challenge and fluid dynamical subject of interest for more than fifty years; but in the last decade significant advances have made understanding, prediction, modeling, control dynamic on rotors. This paper provides summary state art experiments future directions understanding Experimental data sets are discussed, as well direction research stall. Coordinated t...

In order to develop and demonstrate a systematic approach to assessing and modeling dynamic characteristics for advanced configurations, a comprehensive dynamic wind tunnel test program was conducted for the F-16 and the F-22 at the 12-ft Vertical Wind Tunnel at WPAFB. Using the recently-developed Multi-Axis Test rig, body-axis forced oscillation, velocityvector steady rotation, and the new com...

Hybrid memory systems comprised of dynamic random access memory (DRAM) and non-volatile memory (NVM) have been proposed to exploit both the capacity advantage of NVM and the latency and dynamic energy advantages of DRAM. An important problem for such systems is how to place data between DRAM and NVM to improve system performance. In this paper, we devise the first mechanism, called UBM (page Ut...