Reducing aircraft soot emissions may not reduce contrail clouds, according to in-flight observations of emissions from a ...

Aerial firefighting helicopters ingest significant volumes of airborne particles, and operators are advised to conduct periodic “compressor washes” to remove the contaminants from the compressor.

Commercial planes are steadily coming equipped with more and more powerful turbofans. These engines produce enormous amounts of thrust, and when they’re cruising at high altitude, they sip fuel with ...