Hydrocarbon oils of the alga Botryococcus braunii, extracted from a natural "bloom" of the plant, have been hydrocracked to produce a distillate comprising 67% gasoline fraction, 15% aviation turbine fuel fraction, 15% diesel fuel fraction, and 3% residual oil. The distillate was examined by a number of standard petroleum industry test methods. This preliminary investigation indicates that the ...

Depletion of fossil fuels and environmental considerations have led engineers and scientists to anticipate the need to develop a clean, renewable and sustainable energy system. In general, they agree that in such a system hydrogen will be used as an energy carrier. One of the areas in which hydrogen will be replacing fossil fuels is air transportation, an area that has been under research for s...

....................................................................................................................................................... 2 1 Introduction........................................................................................................................................... 2 2 Methods ........................................................................

The present work provides an analysis of the potential impact fossil-based Low Carbon Aviation Fuels (LCAF) for European aviation sector, with a time horizon to 2050. LCAF are crude-derived alternative kerosene, offering some Green House Gas (GHG) savings, and have been defined by ICAO as eligible fuels mitigating environmental aviation. A methodological framework evaluate EU technical producti...

This paper builds a model for estimating the fuel consumption of a taxiing aircraft using flight data recorder information from operational aircraft. The taxi fuel burn is modeled as a linear function of several potential explanatory variables including the taxi time, number of stops, number of turns and number of acceleration events, and the coefficients are estimated using least-squares regre...

Aviation NOx emissions promote tropospheric ozone formation, which is linked to climate warming and adverse health effects. Modeling studies have quantified the relative impact of aviation NOx on O3 in large geographic regions. As these studies have applied forward modeling techniques, it has not been possible to attribute O3 formation to individual flights. Here we apply the adjoint of the glo...

Abstract Required Navigation Performance (RNP) procedures to closely-spaced parallel runways that include curved approach transitions afford many benefits such as reduced track miles, less fuel burn and emissions, and the potential for routings around noise sensitive areas. The Federal Aviation Administration (FAA) NextGen program plans to roll out “Established on RNP” (EoR) simultaneous approa...