Title:
STALL BUFFERING SYSTEM
Document Type and Number:
Japanese Patent JP2000204967
Kind Code:
A
Abstract:
To prevent the occurrence of aerodynamic instability of an aero-engine.
This system is arranged at the inlet of the rotor of an engine 200 separately from turbofan blades 202, 204, 206, 208, 210, 212, 214, and 216 and provided with a flatter sensor to generate a sensor signal to indicate resonance of a turbofan blade related to a stall flatter. From the sensor signal, a command signal containing a space Fourier component(SFC) of disturbance coinciding with the natural frequency of the mode of a given structure of a fan blade having a given diameter node and a real time amplitude component is generated by a control device.
Inventors:
GYSLING DANIEL L
FEULNER MATTHEW
EVEKER KEVIN
FEULNER MATTHEW
EVEKER KEVIN
Application Number:
JP36979099A
Publication Date:
July 25, 2000
Filing Date:
December 27, 1999
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP
International Classes:
F01D5/26; F02C9/00; F04D29/66; (IPC1-7): F02C9/00; F01D5/26
Attorney, Agent or Firm:
Fujiya Shiga (2 outside)