US 9,810,085 B2
Flap seal for gas turbine engine movable nozzle flap
Shawn M. McMahon, Pittsfield, MA (US); and Kirk A. Shute, New Britain, CT (US)
Assigned to UNITED TECHNOLOGIES CORPORATION, Farmington, CT (US)
Filed by Shawn M. McMahon, Pittsfield, MA (US); and Kirk A. Shute, New Britain, CT (US)
Filed on Aug. 22, 2011, as Appl. No. 13/214,425.
Prior Publication US 2013/0048749 A1, Feb. 28, 2013
Int. Cl. F02K 1/00 (2006.01); F01B 25/02 (2006.01); F04D 29/44 (2006.01); F01D 11/00 (2006.01); F01D 25/30 (2006.01); F02K 1/12 (2006.01); F02K 1/80 (2006.01)
CPC F01D 11/005 (2013.01) [F01D 25/30 (2013.01); F02K 1/12 (2013.01); F02K 1/805 (2013.01); F05D 2240/55 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of sealing a cavity between a nozzle flap and a fixed structure, the method comprising the steps of:
providing a seal that extends between first and second ends, the first end provides a hinge portion, and the second end includes a laterally extending sealing profile;
supporting the hinged portion relative to a fixed structure along an axis to provide a V-shape with the seal and the fixed structure;
biasing the seal toward a seal land on a nozzle flap with a spring biasing member providing a spring biasing force and with pressurized fluid; and
rotating the seal about the axis and relative to the nozzle flap and the fixed structure to maintain sealing engagement between the sealing profile and the seal land in response to the spring biasing step and seal the cavity between the nozzle flap and the fixed structure.
 
4. A gas turbine engine nozzle comprising:
a static hood;
a seal holder extending from the static hood in a first axial direction to an end providing an pivotal axis, the seal holder secured to the static hood by fastening elements to provide a fixed structure;
a flap movable relative to the fixed structure;
a seal hinged about the pivotal axis and extending from the pivotal axis in a second axial direction opposite the first axial direction to a sealing profile engaging the flap, the seal and the seal holder configured in a V-shape, the seal rotatable about the pivotal axis and movable relative to the flap and the seal holder, the seal providing a pressurized backside facing the seal holder; and
a spring biasing member arranged at the pressurized backside of the seal and configured to continuously urge the seal toward and maintain engagement with a seal land on the flap.