National Aeronautics and Space AdministrationRedstone MRLVLaunch Complex 5, Cape Canaveral SFS, FL, USA
Mercury-Redstone 4
Launched
July 21, 1961

Summary
Mercury-Redstone 4 launched on a National Aeronautics and Space Administration Redstone MRLV from Launch Complex 5, Cape Canaveral SFS, FL, USA on July 21, 1961. It was National Aeronautics and Space Administration's 30th launch and 11th this year. It was the 6th Redstone MRLV flight and the 4th this year. The payload was bound for Suborbital (Sub). One crew member flew: Gus Grissom. The spacecraft was Mercury No.11 (11).
- Watch
- Liberty Bell 7 - Full Missionlunarmodule5
- Launch of Mercury-Redstone 4 (Liberty Bell 7)lunarmodule5
- Booster
- No booster details on record.
- Mission
- Human Exploration · Suborbital (Sub)
- Milestone
- 6th Redstone MRLV flight · 4th this yearNational Aeronautics and Space Administration's 30th launch11th this year
Crew
Gus GrissomPilot · NASA · age 35 · first flight
Spacecraft
Mercury No.11 (11)
Mercury No.11 is the Mercury capsule used for the Mercury-Redstone 4 - callsign "Liberty Bell 7" - mission launched on July 21, 1961 and piloted by astronaut Virgil "Gus" Grissom.
- Destination: Suborbital
- Mission length: under an hour
The Mercury spacecraft safely splashed down in the Atlantic Ocean.
Flight preview
About this launch
Mercury-Redstone 4 was the second United States human spaceflight, on July 21, 1961. The suborbital Project Mercury flight was launched with a Mercury-Redstone Launch Vehicle, MRLV-8. The spacecraft, Mercury capsule #11, was nicknamed the Liberty Bell 7, and it was piloted by the astronaut Virgil "Gus" Grissom.
Pad

Launch Complex 5, Cape Canaveral SFS, FL, USA
13th launch from Launch Complex 5, 4th this year · 63rd from Cape Canaveral SFS, FL, USA
13 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
76 days after the previous launch from this pad
Questions
When did Mercury-Redstone 4 launch?
Mercury-Redstone 4 launched on July 21, 1961. The time is known to the hour, not the minute.
Where can I watch Mercury-Redstone 4?
Coverage: Liberty Bell 7 - Full Mission; Launch of Mercury-Redstone 4 (Liberty Bell 7). Watch the replay
What rocket launched Mercury-Redstone 4?
Redstone MRLV, flown by National Aeronautics and Space Administration. Redstone MRLV spec sheet
Where did Mercury-Redstone 4 launch from?
Launch Complex 5, Cape Canaveral SFS, FL, USA.
What orbit was Mercury-Redstone 4 going to?
Suborbital (Sub), a human exploration mission.
Which program is Mercury-Redstone 4 part of?
Mercury. About Mercury
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