Minimizing ammonia fuel emissions

New simulations indicate that swirling ammonia in combustion chambers can help reduce harmful emissions – insight that may help on-going efforts to develop ammonia as a carbon-free fuel source.

Researchers explore advantages of ported shroud turbochargers

(Phys.org) —The federal government wants more fuel-efficient vehicles on the country's highways and back roads, which often comes at the cost of reduced engine size and power. That can be hard to reconcile with a population ...

Top-class biofuel from the depths of the forest

Tops and branches from tree-felling sites are reborn in the laboratory as compact pellets. However, the energy industry will not act until the price is right.

NASA surpasses test facility record with J-2X powerpack test

(Phys.org) -- NASA's Stennis Space Center near Bay St. Louis, Miss., broke its own record Friday when it conducted a test on the new J-2X powerpack. The test lasted for 1,150 seconds, surpassing the previous record by more ...

NASA's J-2X engine kicks off 2012 with powerpack testing

(PhysOrg.com) -- A new series of tests on the engine that will help carry humans to deep space will begin next week at NASA's Stennis Space Center in southern Mississippi. The tests on the J-2X engine bring NASA one step ...

Volcanic ash affects airplanes, weather, sunsets

(AP) -- In 1989, all four engines of a Boeing 747 over Alaska conked out after it flew into a cloud of volcanic ash. The crew was able to restart them, but incidents like that dramatize why hundreds of flights every year ...

Scientists reduce harmful emissions from HPPs

A team of scientists from Siberian Federal University (SFU) and their colleagues from Novosibirsk and the Netherlands modeled the process of coal burning in HPP boilers and determined which type of fuel produced less harmful ...

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