US 12,134,480 B2
Aircraft engine nacelle cowling mechanism
Daniel Sosnosky, Bowie, MD (US); Thomas Weir, Lutherville, MD (US); and Robert Klingele, New Britain, PA (US)
Assigned to MRA SYSTEMS, LLC, Baltimore, MD (US)
Appl. No. 17/441,285
Filed by MRA SYSTEMS, LLC, Baltimore, MD (US)
PCT Filed Nov. 24, 2020, PCT No. PCT/US2020/061935
§ 371(c)(1), (2) Date Sep. 21, 2021,
PCT Pub. No. WO2021/167667, PCT Pub. Date Aug. 26, 2021.
Claims priority of provisional application 62/940,079, filed on Nov. 25, 2019.
Prior Publication US 2022/0177148 A1, Jun. 9, 2022
Int. Cl. B64D 29/06 (2006.01)
CPC B64D 29/06 (2013.01) 18 Claims
OG exemplary drawing
 
1. An aircraft propulsion system comprising:
an engine assembly including a fan that rotates to move air;
a cowl that surrounds at least a portion of the engine assembly when the cowl is in a closed position, the cowl including an outer surface arranged away from the engine assembly that provides an aerodynamic surface; and
a cowl mechanism connected to the cowl and configured to guide the cowl along a movement path from the closed position to an open position, wherein
in the open position, an entirety of the cowl is arranged farther away from a horizontal plane passing through a rotating axis of the fan than in the closed position,
the cowl mechanism guides the cowl along the movement path between the open position and the closed position so that no portion of the cowl extends beyond a clearance plane at any position along the movement path,
the cowl mechanism is configured to be mounted to a pylon extending away from a fuselage of the aircraft in a horizontal direction, and
the clearance plane extends in a vertical direction through an intersection point that is a point on an outer surface of the cowl in the closed position that is closest to the fuselage.