About 13 results
https://drivepatents.com/patents/1392258 · 8 Oct 2025
A center plug (206) for attenuating noise in a gas turbine engine (122) includes an inner skin (330), a forward bulkhead (346), and aft bulkhead (334), and a noise attenuation panel (452). The inner skin has a substantially cylindrical shape and extending ...
https://drivepatents.com/patents/1396479 · 6 Aug 2025
L'invention concerne une structure fixe interne (300) pour nacelle d'aéronef qui comporte un échangeur thermo-acoustique (304) avec une plaque (304a) percée de trous (405), une structure en nid d'abeilles (302) entre une peau résistive (302a) et une pe...
https://drivepatents.com/patents/986912 · 11 Sep 2013
A method and apparatus for reducing noise generated during operation of a propulsion system. In one illustrative embodiment, a nozzle system comprises a first nozzle (402) and a second nozzle (406) at least partially surrounded by the first nozzle. An oute...
https://drivepatents.com/patents/985173 · 3 Apr 2013
A silencer (2) for an auxiliary power unit of an aircraft comprises an inlet (4), an outlet (6), a housing (8), and a flow channel (10), arranged in the housing, comprising a porous wall material. Between the housing and the flow channel an intermediate sp...
https://drivepatents.com/patents/994261 · 9 Jan 2013
The sound absorber (2) has an inlet (46), an outlet (48), a housing (4), and a flow channel (6) which has a porous wall material and is arranged in the housing. An intermediate space is formed between the housing and the flow channel. The intermediate spac...
https://drivepatents.com/patents/996406 · 31 Oct 2012
An exhaust silencer assembly includes an exhaust duct (22A;22B) and an exhaust silencer (20A;20B). The exhaust silencer is disposed about the exhaust duct and has a plurality of solid baffles (24a-24f;34a-34e;46) and at least one perforated baffle (26;38)....
https://drivepatents.com/patents/999539 · 8 Aug 2012
An apparatus and method comprising a fan nozzle sleeve (329), a plurality of slider mechanisms (346), and a fan nozzle actuator system (340). A flow of gases (306) generated by an engine moves through and exits the engine at an aft end of the fan nozzle sl...
https://drivepatents.com/patents/999991 · 25 Jul 2012
The engine has a noise reducing system for reducing noise generated by ejection of gas stream from a nozzle. The system includes a duct connected in upstream to a recess (24) divided into a central chamber (54) and side chambers (56, 58). The duct opens in...
https://drivepatents.com/patents/1008074 · 2 Nov 2011
A gas turbine engine (1) has an annular bypass duct (4) defined between a fan nacelle (2) and a core fairing (3) through which fan air is discharged. One or more bifurcator members (5a-5i) are positioned inside the exit of the bypass duct (4) to bifurcate ...
https://drivepatents.com/patents/1067934 · 26 Apr 2006
A fluid mixer for mixing two fluid streams (40, 42) includes a set of main lobes (26) defining alternating primary and secondary main chutes (30, 32) one or more auxiliary lobes (28) intermediate two of the main lobes (26), and an auxiliary fluid capture d...