Dr. J. Ross Heverly, 64, a physicist who had been deputy director and principal scientist with the General Research Corp. in McLean since 1972, died Sunday in a Bermuda hotel following a heart attack. He was on vacation at the time.

Dr. Heverly helped direct studies in avionics, electronics and physical meteorology under contract to the Department of Defense.

Prior to joining General Research, he worked for the Research Analysis Corp. and directed that company's field office in Europe during the mid-1960s. At that time RAC was conducting studies for the U.S. 7th Army.

Dr. Heverly was a native of Towanda, Pa. He earned bachelor's master's and doctoral degrees at Pennsylvania State University.

He taught physics at Penn State and at the U.S. Naval Academy at Annapolis. He joined the operations research office of Johns Hopkins University as an operations analyst in 1953.

He was a fellow of the American Physical Society and belonged to the American Meteorological Association, the American chemical Society, and the American Association of Physics Teachers.

Dr. Heverly was the author of several physics texts.

He is survived by his wife, Leontine Goezel, of the home in Chevy Chase, and a brother, Lance F., of Arlington.