Abstract: A turbine engine including a fan having a plurality of fan blades, a nacelle that extends circumferentially about the fan, an engine intake including an engine inlet, and a variable engine intake system. The nacelle includes a fan cowl and an inlet cowl that is movable with respect to the fan cowl. The engine inlet is defined from a leading edge of the inlet cowl to the plurality of fan blades. The engine inlet has an inlet tip diameter at the leading edge of the inlet cowl. The variable engine intake system adjusts the inlet cowl to adjust the inlet tip diameter of the engine inlet.

Abstract: Apparatus are disclosed for a turbofan comprising: a bifurcation including a first track; and an outer casing including an airflow inlet and an airflow outlet, the outer casing adjustable into a closed position and an open position, the outer casing positioned around the bifurcation, the outer casing including a first slider for movement between the closed position and the open position that mates with the first track, the first track including a brush seal holder and a brush seal including a plurality of bristles having a compressed state in the closed position and a decompressed state in the open position.

Abstract: A turbine engine including a fan having a plurality of fan blades, a nacelle that extends circumferentially about the fan, an engine intake including an engine inlet, and a variable engine intake system. The nacelle includes a fan cowl and an inlet cowl that is movable with respect to the fan cowl. The engine inlet is defined from a leading edge of the inlet cowl to the plurality of fan blades. The engine inlet defines a droop axis at the leading edge of the inlet cowl. The inlet cowl is tilted at a droop angle that is defined as an angle of the droop axis with respect to an axial plane of the turbine engine. The variable engine intake system adjusts the droop angle of the inlet cowl during operation of the turbine engine.

Abstract: A turbine engine including a fan having a plurality of fan blades, a turbo-engine positioned downstream of the fan and having a core inlet, an engine intake that extends to the core inlet, and a variable engine intake system. Air enters the turbine engine through the engine intake. The variable engine intake system includes a plurality of wind condition sensors for sensing wind conditions about the turbine engine, and a controller. The plurality of wind condition sensors includes a first wind condition sensor on a first side of the turbine engine and a second wind condition sensor on a second side of the turbine engine. The controller adjusts the engine intake based on the wind conditions about the turbine engine from the first wind condition sensor and the second wind condition sensor.

Abstract: Apparatus are disclosed for a turbofan comprising: a bifurcation including a first track; and an outer casing including an airflow inlet and an airflow outlet, the outer casing adjustable into a closed position and an open position, the outer casing positioned around the bifurcation, the outer casing including a first slider for movement between the closed position and the open position that mates with the first track, the first track including a brush seal holder and a brush seal including a plurality of bristles having a compressed state in the closed position and a decompressed state in the open position.