Aug. 5, 1961 - The Soviet Union put its second manned spaceship into round-the-earth orbit today, Tass press agency said. Tass said the spaceship was manned by Maj. Gherman Stepanovich Titov. Named "Vostok 2," it weighs about 10,000 pounds. The latest Soviet space feat came less than four months after Maj. Yuri Gagarin made his epochal flight April 12. Gagarin orbited the earth for 108 minutes at a peak altitude of 187 miles. Pilot Titov is maintaining two-way radio communication.