Sinuous chevron exhaust nozzle

KEJ Blodgett, KS Early, S Martens, WA Bailey… - US Patent …, 2007 - Google Patents
A gas turbine engine exhaust nozzle includes a row of laterally sinuous chevrons extending
from an aft end of an exhaust duct. The chevrons have radially outer and inner surfaces …

Gas turbine engine exhaust mixer including circumferentially spaced-apart radial rows of tabs extending downstream on the radial walls, crests and troughs

MH Cunningham - US Patent 8,635,875, 2014 - Google Patents
A gas turbine engine exhaust mixer has a plurality of circumferentially distributed alternating
inner and outer lobes. The outer lobes protrude into the annular bypass passage of the …

Engine noise

RD Stieger, KM Britchford, PJR Strange - US Patent 7,735,601, 2010 - Google Patents
In order to provide noise Suppression, bumps or undulations are provided on a nozzle
Surface in order to vary the conver gent-divergent ratio between that Surface and an …

System and method for premixer wake and vortex filling for enhanced flame-holding resistance

AM Elkady, CL Vandervort, K Ramakrishnan - US Patent 9,435,537, 2016 - Google Patents
BACKGROUND The invention relates generally to gas turbine combustion systems and
more particularly to a technique for increasing flame-holding resistance, and enhancing fuel …

Modular chevron exhaust nozzle

RM Tisdale, GA Uhler, MR Johnson, CJ Nye - US Patent 7,926,285, 2011 - Google Patents
The present invention relates generally to gas turbine engines, and, more specifically, to
exhaust nozzles therein. In a gas turbine engine, air is pressurized in a compressor and …

Variable pitch fan for gas turbine engine and method of assembling the same

BW Miller, IF Prentice, DA Niergarth - US Patent 10,072,510, 2018 - Google Patents
A gas turbine engine is provided. The gas turbine engine includes a core and a variable
pitch fan arranged in flow communication with the core. The variable pitch fan has a disk and …

Variable-pitch rotor with remote counterweights

DA Niergarth, BW Miller, DA Bradley - US Patent 9,869,190, 2018 - Google Patents
A pitch control mechanism includes: a rotor structure configured for rotation about a
longitudinal axis; a row of blades carried by the rotor structure, each blade having an airfoil …

Fluted chevron exhaust nozzle

BJ Renggli - US Patent 7,963,099, 2011 - Google Patents
US7963099B2 - Fluted chevron exhaust nozzle - Google Patents US7963099B2 - Fluted
chevron exhaust nozzle - Google Patents Fluted chevron exhaust nozzle Download PDF Info …

Wet active chevron nozzle for controllable jet noise reduction

RH Thomas, KW Kinzie - US Patent 8,015,819, 2011 - Google Patents
Disposed at or toward the trailing edge of one or more nozzles associated with a jet engine
are injection ports which can selectively be made to discharge a water stream into a nozzle …

Turbomachine nozzle cover provided with triangular patterns having pairs of vertices for reducing jet noise

D Au, PMM Bigot, P Briend, PPM Loheac - US Patent 7,854,123, 2010 - Google Patents
The pattern relates to a cover for a turbomachine nozzle, the cover having a plurality of
patterns each with an outline of triangular shape having a base and two vertices that are …