The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 1995
Filed:
Aug. 31, 1994
Bruce V Lyon, Palm Beach Gardens, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A gas turbine engine (10) includes a plurality of rotor blades (24) having a root (33) and a tip (34) and a pressure side (32) and a suction side (30). The rotor blades (24) are enclosed in an engine case (11). A variable position engine case liner (50) is disposed radially inward of the engine case (11) and radially outward of the rotor blade tips (34). Biasing mechanism (60), disposed between the liner (50) and the engine case (11), urge the liner (50) radially inward from the engine case (11). The tips (34) of the rotor blades (24) are angled with respect to the direction of rotation of the blades (24) on the pressure side (32) thereof to deflect pressurized air against the liner (50). The liner (50) adjusts its position to maintain a minimum tip clearance (70) between the liner (50) and the tips (34) of the rotor blades (24) during different operating conditions of the gas turbine engine (10).