US 9,810,091 B2
Smart active clearance control between a rotor blade and a shroud
Kevin Zacchera, Glastonbury, CT (US); and Patrick D. Couture, Tolland, CT (US)
Assigned to United Technologies Corporation, Farmington, CT (US)
Filed by United Technologies Corporation, Hartford, CT (US)
Filed on Aug. 11, 2015, as Appl. No. 14/823,568.
Claims priority of provisional application 62/036,452, filed on Aug. 12, 2014.
Prior Publication US 2016/0047269 A1, Feb. 18, 2016
Int. Cl. F01D 11/24 (2006.01); F01D 21/00 (2006.01); F01D 5/22 (2006.01); F01D 11/20 (2006.01)
CPC F01D 21/003 (2013.01) [F01D 5/225 (2013.01); F01D 11/20 (2013.01); F05D 2220/30 (2013.01); F05D 2240/11 (2013.01); F05D 2260/81 (2013.01); F05D 2260/83 (2013.01); F05D 2270/20 (2013.01); F05D 2270/44 (2013.01); F05D 2270/71 (2013.01)] 20 Claims
OG exemplary drawing
 
11. A turbine engine, comprising:
a rotor blade extending to a tip;
a shroud radially outboard of the tip; and
an active clearance control system configured to
perform a squeeze test between the tip and the shroud; and
control clearance between the tip and the shroud based on results of the squeeze test;
wherein the active clearance control system is operable for recalibration based on performance of another squeeze test.