Powering airplanes by hydrogen, as reported on David Kramer in the December 2020 issue of Physics Today (page 27), is a nice theoretical idea that brings little practical benefit.Apart from difficulties handling hydrogen cryogenic liquid or gas at very high pressure, most serious problem with an aviation fuel isn’t weight tanks containing it but rather its low density, even liquid. Consider Toy...

Today, wireless technology forms the communications backbone of many industries—including aviation, transportation, government, and defense. The era of the Next Generation Air Transportation System, (NextGen), is upon us. The Federal Aviation Administration, in collaboration with industry, is deploying NextGen technology on the ground, in the air, at air traffic control facilities and in the co...

The cost of providing air transportation for passengers and cargo to, from, and within the European Union was scheduled to increase in 2012 due to the EU Emission Trading Scheme. The European Union (EU) has legislated that aircraft landing or taking off from EU airports are subjected to the Emission Trading System (ETS) and are levied a charge for the estimated amount of carbon dioxide (CO2) ge...

SEATTLE – Aviation Partners announced that as of 2:56 pm PST on Sunday, January 15, 2012 its blended winglets have saved the worlds commercial and business aircraft operators an estimated three billion gallons of jet fuel. This represents a global reduction in CO2 emissions of more than 32.2 million tonnes. Aviation Partners’ winglets are now flying on more than 5,000 individual airplanes, and ...

BACKGROUND The introduction of renewable jet fuel (RJF) is considered an important emission mitigation measure for the aviation industry. This study compares the well-to-wake (WtWa) greenhouse gas (GHG) emission performance of multiple RJF conversion pathways and explores the impact of different co-product allocation methods. The insights obtained in this study are of particular importance if R...

Biodiesel (FAME) is increasingly used in diesel fuel formulations, however, even small amounts of biodiesel are not appropriate in certain engine applications. For example, biodiesel in aviation fuel and in back-up electric generators used in nuclear power plants can cause significant issues. Likewise, the presence of trace biodiesel in diesel fuel specified for marine pleasure crafts is proble...

A special sensitive element based on the novel composite material was created. The sensor has a linear calibration and is resistant to aliphatic hydrocarbons, in particular aviation fuel. A low cost and easy-to-implement method for calibrating the sensor was proposed. Temperature dependence of the oxygen mass transfer coefficient kL was measured for aviation fuel TS-1 (Russi...

This study describes the methodology and results for calculating future global aviation emissions of carbon dioxide and oxides of nitrogen from air traffic under four of the IPCC/SRES (Intergovernmental Panel on Climate Change/Special Report on Emissions Scenarios) marker scenarios: A1B, A2, B1, and B2. In addition, a mitigation scenario has been calculated for the B1 scenario, requiring rapid ...

Reduced chemical kinetic models to predict the combustion characteristics of jet propulsion fuels are produced and tested. The parent detailed kinetic model has been developed on the basis of a surrogate fuel formulation methodology that utilizes combustion property targets measured for a particular real fuel to formulate a chemical mixture of nalkanes, iso-alkanes and aromatic functionalities ...

The past oil crises have caused dramatic improvements in fuel efficiency in all industrial sectors. The aviation sector-aircraft manufacturers and airlines-has also made significant efforts to improve the fuel efficiency through more advanced jet engines, high-lift wing designs, and lighter airframe materials. However, the innovations in energy-saving aircraft technologies do not coincide with ...