Self-tuning impact damper for rotating blades.U.S. patent: 6,827,551 Issued: December 7, 2004 Inventors: Kirsten P. Duffy, Gerald V. Brown and Ronald L. Bagley Assigned: The United States of America UNITED STATES OF AMERICA. The name of this country. The United States, now thirty-one in number, are Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Hampshire, as represented by the Administrator of the National Aeronautics and Space Administration National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space exploration, artificial satellites (see satellite, artificial), Keywords: The self-tuning impact damper uses the rotor speed to tune the resonant frequency resonant frequency, n the specific frequency at which an object vibrates. of a rattling mass to an engine order excitation frequency. |
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