Patent ID: 9334060
Filing Date: 2016-05-10
CPC Classification: B64C,B64D,F01D,F02C,F02K

Claim Text:
1. A method of managing aircraft exhaust, comprising: receiving hot air from an exhaust aircraft engine at a hot air mass flow rate, the aircraft engine configured to drive a rotor of the aircraft; providing the hot air at the hot air mass flow rate to a mixer duct of an exhaust system attached to the exhaust duct; receiving cold air from outside the aircraft at a cold air mass flow rate through a first duct connecting the outside of the aircraft to a distributor disposed within the mixer duct, wherein a first fan is positioned within the first duct, and wherein the first fan is separate from the rotor; providing the cold air at the cold air mass flow rate to the distributor; and mixing the hot air and the cold air within the mixer duct at a variable hot air mass now rate to cold air mass flow rate ratio, wherein the hot air mass flow rate is varied using the aircraft engine and the cold air mass flow rate is varied by controlling a speed of the first fan positioned within the first duct, wherein the variable hot air mass flow rate to cold air mass flow rate ratio is selectively maintained independent of at least one of (1) a variation in the hot air mass flow rate and (2) a variation in a translational speed of the aircraft.