Specifically the last worked very well on this one fan that would get noisy after a while. I had 1/2 liter left of synthetic engine oil and tried a drop of that and its now been 1 year and fan is ...

MODANE, FRANCE—Wind tunnel evaluations are giving Safran confidence about meeting the targeted noise levels of the RISE open-fan engine demonstrator, company executives said during a visit to an ONERA ...

NASA has awarded a $500,000,two-year contract to Virginia-based Techsburg to research the reduction of jet engine fan noise using ejector pump flow control. The contract, part of NASA's Small Business ...