John Glenn 13, "Friendship 7", and had the name hand-painted on the side like the one on his F-86 had been. Glenn and Carpenter completed their training for the mission in January 1962, but postponement of the launch allowed them to continue rehearsing. Glenn spent 25 hours and 25 minutes in the spacecraft performing hangar and altitude tests, and 59 hours and 45 minutes in the simulator. He flew 70 simulated missions and reacted to 189 simulated system failures. After a long series of delays, "Friendship 7" lifted off from Cape Canaveral Air Force Station on February 20, 1962. There were eleven
Akatsuki (spacecraft) throat was completely destroyed by transient ignition of the engine. As a result, the selected strategy was to use four hydrazine attitude control thrusters, also called reaction control system (RCS), to drive the probe into orbit around Venus. Because the RCS thrusters do not need oxidiser, the remaining 65 kg of oxidiser (MON) was vented overboard in October 2011 to reduce the mass of the spacecraft. Three peri-Venus orbital maneuvers were executed on 1 November, 10 and 21 November 2011 using the RCS thrusters. A total delta-"v" of 243.8 m/s was imparted to the spacecraft. Because the RCS thrusters' specific