High-temperature gas effects are known as the physical processes which result in a deviation of the behavior of the calorically perfect gas in the hypersonicflow regime. These effects may have a significant impact on laminar-turbulent transition of the boundary layer, and thus affect the heat loads of hypersonic vehicles. In the present paper we deal with thermal effects, i.e. rotational and vi...

Fuel thermal management has become an important consideration in the design and operation of modern high performance aircraft. In many cases, fuel is a primary heat sink for thermal loads associated with the cooling of the airframe as well as propulsion, electronic, actuator, and payload systems. It is now common for thermal systems to recirculate warm fuel to the tanks, resulting in a rise in ...

The energy system must be producing close to zero emissions by mid-century to meet stringent climate goals. There are many possible clean energy options, but few are ready or able to replace coal and gas as primary electricity supplies. This paper addresses the issue of whether a viable energy system can be based mostly around solar thermal electricity. It is found that, using thermal storage, ...

The present Jefferson Lab Free Electron Laser window requirements were used to develop a RF window design. These requirements include 1.497 GHz as the design frequency, and require the window to pass higher modes that originate in the cavity. The VSWR should be less than 1.1:1 at the design frequency and no greater than 1.5:1 at frequencies up to 2.2 GHz. The finite element method was used with...