This n~port was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes. any legal liability or responsibility for any third party's use or the results of such use of any information, apparatus, product or process disclosed in this report, or represents that its use by such third party would not infringe privately owned rights. i i ACKNOWLEDGMENT The authors wish to express their appreciation to Drs. William Pennell and Ronald Drake of Battelle, Pacific Northwest Laboratories, for their technical review and advice, to Ms. Pamela Partch for her careful editorial review and criticism, and to Mrs. Louise Warren for her patience during typing many revisions of this report. Special thanks is given to George Tennyson and Louis Divone of the Department of Energy Wind Systems Branch for their support and advice.