Little Joe 5A was an uncrewed

launch escape system A launch escape system (LES) or launch abort system (LAS) is a crew-safety system connected to a space capsule that can be used to quickly separate the capsule from its launch vehicle in case of an emergency requiring the abort of the launch, suc ...

test of the Mercury spacecraft, conducted as part of the U.S.

Mercury program Project Mercury was the first human spaceflight program of the United States, running from 1958 through 1963. An early highlight of the Space Race, its goal was to put a man into Earth orbit and return him safely, ideally before the Soviet Un ...

. It was an attempted re-test of the failed Little Joe 5 flight. The mission used production Mercury spacecraft #14 atop a Little Joe booster rocket. The mission was launched March 18, 1961, from Wallops Island, Virginia. The LJ-5 failure sequence was repeated when capsule escape rocket again ignited prematurely with the capsule remaining attached to the booster. In this flight however, a ground command was sent to separate the capsule from the booster and escape tower. This allowed the main and reserve parachutes to deploy and the capsule was recovered with only minor damage. It would be used again on the subsequent Little Joe 5B mission, in a third attempt to achieve mission objectives. The Little Joe 5A flew to an apogee of 7.7 miles (12 km) and a range of . The mission lasted 5 minutes 25 seconds. Maximum speed was and acceleration was 8 G (78 m/s²). Mercury spacecraft # 14 used in the Little Joe 5A mission, is currently displayed at the

Virginia Air and Space Center The Virginia Air and Space Science Center is a museum and educational facility in Hampton, Virginia that also serves as the visitors center for NASA's Langley Research Center and Langley Air Force Base. The museum also features an IMAX digit ...

, Hampton, Virginia.Little Joe 5A in A Field Guide to American Spacecraft

References

{{Project Mercury Project Mercury 1961 in spaceflight