John C. Jones - Stuart FL Perry P. Sifford - Jupiter FL Joel F. Sutton - North Palm Beach FL
Assignee:
United Technologies Corporation - Hartford CT
International Classification:
F01D 510
US Classification:
416190
Abstract:
Effective damping of blade vibratory energy is sought by the apparatus described herein. The concepts relate specifically to what is known as blade to blade damping as is distinguished from blade to ground damping. The dampers employed have a "T" shaped cross section geometry and are designed to extend circumferentially on an engine rotor between the platform sections of each pair of rotor blades. The dampers are of extreme light weight such that the slipload forces required to generate sliding contact between the damper and the blade platforms is low.
Larry E. Anders - Palm Springs FL Joel F. Sutton - Lake Park FL
Assignee:
The United States of America as represented by the Secretary of the Air Force - Washington DC
International Classification:
B64C 1508
US Classification:
23926539
Abstract:
A bellcrank assembly, adapted for mounting on, and actuating, a convergent flap of the exhaust nozzle of a turbojet engine. The unique structure of the assembly, unlike the prior art, transmits radial and bi-directional thrust loads to the flap utilizing low cost stamped and formed sheetmetal components, with the loads being transmitted directly into the skin of the flap. The bellcrank assembly is structured for external mounting on the convergent flap, thereby permitting easy inspection, maintenance and service, without the need to disassemble other nozzle hardware; and, it includes angular contact bearings with cross-corner path arrangement, and bellcrank link arms and a bellcrank actuator arm which actually physically comprise the housing of the bellcrank.