tailieunhanh - Final Report: Compliant Thermo- Mechanical MEMS Actuators LDRD #52553

The first adjustment to the governor is the full rate gate timing. The stop nuts on the governor main valve are adjusted to limit the amount of travel of the main valve. By changing the maximum movement of the main valve, the amount of oil flowing to the servomotors is changed, and, therefore, the maximum speed at which the wicket gates travel is changed. The rate at which the wicket gates close determines the magnitude of penstock pressure transients or water hammer and the maximum speed of the unit following a load rejection. Faster wicket gate. | SANDIA REPORT SAND2004-6635 Unlimited Release Printed December 2004 Final Report Compliant ThermoMechanical MEMS Actuators LDRD 52553 Michael S. Baker Richard A. Plass Thomas J. Headley Jeremy A. Walraven Prepared by Sandia National Laboratories Albuquerque New Mexico 87185 and Livermore California 94550 Sandia is a multiprogram laboratory operated by Sandia Corporation a Lockheed Martin Company for the United States Department of Energy s National Nuclear Security Administration under Contract DE-AC04-94AL85000. Approved for public release further dissemination unlimited. Issued by Sandia National Laboratories operated for the United States Department of Energy by Sandia Corporation. NOTICE This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof nor any of their employees nor any of their contractors subcontractors or their employees make any warranty express or implied or assume any legal liability or responsibility for the accuracy completeness or usefulness of any information apparatus product or process disclosed or represent that its use would not infringe privately owned rights. Reference herein to any specific commercial product process or service by trade name trademark manufacturer or otherwise does not necessarily constitute or imply its endorsement recommendation or favoring by the United States Government any agency thereof or any of their contractors or subcontractors. The views and opinions expressed herein do not necessarily state or reflect those of the United States Government any agency thereof or any of their contractors. Printed in the United States of America. This report has been reproduced directly from the best available copy. Available to DOE and DOE contractors from . Department of Energy Office of Scientific and Technical Information . Box 62 Oak Ridge TN 37831 Telephone 865 576-8401 Facsimile 865 576-5728 E-Mail .