The appointment of Donald M. McLean as manager of public relations for the Sperry Gyroscope Division of Sperry Rand Corporation, Great Neck, N.Y., was announced by Carl Knorr, vice-president of marketing for the division. He replaces Herb Doherty, who resigned.

Mr. McLean, formerly manager of public relations for the Sperry Systems Management Division, joined Sperry in 1965 as a public information representative. He transferred to Sperry Systems Management Division in 1967.

Prior to joining Sperry, Mr. McLean served as managing editor of Marine Engineering/Log. He graduated from the U.S. Merchant Marine Academy in 1951 with a B.S. degree and holds a license as chief mate, any oceans, any tonnage.