This paper investigates the performance of U-type pulsejet engine whose overall length is approximately 160 cm. Gas dynamics, acoustics and chemical kinetics were modeled to gain an understanding of various physical phenomena affecting pulsejet operation, scalability, and efficiency. The pulsejet was run in valveless mode on LPG fuel. Pressure, temperature, thrust, specific impulse, and concent...

Jet fuels are assessed by rigorous quality standards in order to guarantee the optimum performance of aircrafts. The process includes the checking of three main areas: raw material, refining process and final products. The present paper shows the feasibility of using the results achieved in physicalchemical trials, together with chemometric pattern recognition techniques, for quality control in...

JET is preparing for deuterium-tritium operation in 2015 with the newly installed ITER-like Wall, neutral beam enhancements (35MW, 20s) and diagnostics upgrades, as part of a phased approach to the full exploitation of JET. Performance projections for stationary ITER scenarios predict Q~0.160.20 for ELMy H-mode plasmas at 4.5MA/3.6T, Q~0.3-0.5 for hybrid plasmas at 3.5MA/3.45T to 4.1MA/4.0T and...

In this study an initial concept is described. This shows the possibility of connecting axially an ordinary jet engine, a ramjet engine and a scramjet engine. Furthermore rocket mode is also available in this design. The different modes can be changed by this integrated system as easily as the different modes, or nosecone stages can be changed by ordinary jet engines below and above the speed o...

A test setup was built to identify the ignition of jet fuel vapor-air mixtures within an insulation media and induced by a hot duct surface. The external diameter of the duct was 76.2 mm (3 inches) and covered with a 12.7 mm (0.5 inch) layer of ceramic fiber insulation, which had its pores completely filled with fuel vapor and air mixtures. The ignition was detected by thermocouples installed i...

For high-speed air breathing engines, fuel injection and subsequent mixing with air is paramount for combustion. The high freestream velocity poses a great challenge to efficient mixing both in macroscale and microscale. Utilising cavities downstream of fuel injection locations, as a means to hold the flow and stabilise the combustion, is one mechanism which has attracted much attention, requir...

BACKGROUND Recent metabolic engineering efforts have generated microorganisms that can produce biofuels, including bio-jet fuels, however these fuels are often toxic to cells, limiting production yields. There are natural examples of microorganisms that have evolved mechanisms for tolerating hydrocarbon-rich environments, such as those that thrive near natural oil seeps and in oil-polluted wate...

Byssochlamys sp. isolate BYSS01 (anamorph, Paecilomyces sp.), which was isolated from jet fuel, is highly adapted to grow in hydrocarbons, having predicted genes involved in degradation of n-alkanes, branched alkanes, and aromatic compounds. The draft genome size is estimated at 29 Mb, containing 8,509 proteins.

Pseudomonas aeruginosa ATCC 33988 is highly adapted to grow in jet and diesel fuel, with a defined regulation of adaptive genes and metabolization of n-alkanes. The draft genome of strain ATCC 33988 is 6.4 Mb in size, with 5,975 coding sequences and 66.3% G+C content, and it is highly similar to that of the clinical strain P. aeruginosa PAO1.