As battery and electric machine technologies improve, the electrification of aircraft propulsion systems may have potential to reduce energy consumption emissions transport aircraft. Incorporating electrical components adds a dimension system design space introduces new tradeoffs between weight efficiency. In this article, we apply numerical optimization conceptual regional category airplanes q...

Abstract When solving the first-order form of linear Boltzmann equation, a common misconception is that matrix-free computational method “sweeping mesh”, used in conjunction with Discrete Ordinates method, too complex or does not scale well enough to be implemented modern high performance computing codes. This has led considerable efforts development matrix-based methods are computationally exp...

Berry's phase may be viewed as arising from the parallel transport of a quantal state around a loop in parameter space. In this Letter, the classical limit of this transport is obtained for a particular class of chaotic systems. It is shown that this " classical parallel transport " is anholonomic — transport around a closed curve in parameter space does not bring a point in phase space back to...

The historical origins of Fermi-Walker transport and Fermi coordinates and the construction of Fermi-Walker transported frames in black hole spacetimes are reviewed. For geodesics this transport reduces to parallel transport and these frames can be explicitly constructed using either Killing or Killing-Yano tensors, the latter route chosen by Marck. For accelerated or geodesic circular orbits i...