Tags: Artificialsatellite, Satellite.
Mercury-Atlas 4 was an unmanned spaceflight of the Mercury program. It was launched on September 13 1961 at 14:09 UTC from Launch Complex 14 at Cape Canaveral Florida. A Crewman Simulator instrument package was aboard. The craft orbited the Earth once.At this time NASA was getting increasingly frustrated with the Atlas’s poor launch record. Of four Mercury-Atlas flights so far two (MA-1 and MA-3) had been total failures.