US 12,486,817 B2
Gas turbine engine with third stream
Brandon Wayne Miller, Middletown, OH (US); Randy M. Vondrell, Newport, KY (US); David Marion Ostdiek, Liberty Township, OH (US); Craig Williams Higgins, Liberty Township, OH (US); and Alexander Kimberley Simpson, Cincinnati, OH (US)
Assigned to General Electric Company, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jul. 12, 2024, as Appl. No. 18/770,902.
Application 18/770,902 is a continuation in part of application No. 18/675,270, filed on May 28, 2024.
Application 18/675,270 is a continuation of application No. 17/879,384, filed on Aug. 2, 2022, granted, now 12,031,504, issued on Jul. 9, 2024.
Prior Publication US 2025/0347259 A1, Nov. 13, 2025
Int. Cl. F02C 3/06 (2006.01); F02K 3/065 (2006.01)
CPC F02K 3/065 (2013.01) [F02C 3/06 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A gas turbine engine comprising:
a turbomachine comprising a compressor section, a combustion section, and a turbine section arranged in serial flow order, the turbomachine defining an engine inlet to an inlet duct, a fan duct inlet to a fan duct, and a core inlet to a core duct;
a primary fan driven by the turbomachine; and
a secondary fan located downstream of the primary fan within the inlet duct,
the gas turbine engine defining a thrust to power airflow ratio between 3.5 and 100 and a core bypass ratio between 0.1 and 10, wherein the thrust to power airflow ratio is a ratio of an airflow through a bypass passage over the turbomachine plus an airflow through the fan duct to an airflow through the core duct, and wherein the core bypass ratio is a ratio of the airflow through the fan duct to the airflow through the core duct;
an effector; and
one or more processors configured to:
determine an effector demand based at least in part on an effector schedule and one or more constraints, and
cause the effector to adjust an airflow through the fan duct based at least in part on the effector demand.