Abstract Future regional aircraft and propulsion systems will have to address both a growing market stricter environmental constraints. Besides the increase of component efficiencies, technological transformation from conventional (hybrid)-electric represents paradigm shift with great potential for aviation industry. In this context, economic, market-relevant as well boundary conditions electri...

In turboprop aircraft, the low-frequency noise field created by propellers is major contributor to interior vibro-acoustic field, which determines a passenger’s discomfort. This paper deals with experimental assessment of an active control (ANC) system for cabin seat headrests using two loudspeakers placed on both sides head create local zone quiet around ears. To deal time-varying disturbances...

Uniform suppression of fat signal is desired in clinical applications. Based on phase differences introduced by different chemical shift frequencies, Dixon method and its variations are used as alternatives of fat saturation methods, which are sensitive to B0 inhomogeneities. Iterative Decomposition of water and fat with Echo Asymmetry and Least squares estimation (IDEAL) separates water and fa...

This paper explores the impact of the regional jet (RJ), an important new technological innovation in the airline industry, on service patterns and service quality. The evidence shows that RJs were used to provide service on a large number of new hub-and-spoke (HS) and point-topoint (PP) routes. In addition, they replaced discontinued jet and turboprop service on many HS routes, as well as supp...