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Redstone MRLV | Mercury-Redstone 4
Redstone MRLV | Mercury-Redstone 4 launched on Fri, Jul 21, 1961, 12:20 PM UTC — a National Aeronautics and Space Administration mission.
Launch SuccessfulNational Aeronautics and Space Administration
Lifted offNET Jul 1961
NET Fri, Jul 21, 1961, 12:20 PM UTC
Live coverage
Watch the webcasts
2 streams available — switch between the provider’s feed, X and others.
Mission profile
The flight at a glance
RedstoneVehicle
National Aeronautics and Space AdministrationProvider
Launch Complex 5Pad
Cape Canaveral SFS, FL, USALocation
MercuryProgram
Human ExplorationMission type
SuborbitalOrbit
Flight simulation
The flight arc
A representative suborbital arc for Redstone to Suborbital. Illustrative model — not this mission’s live telemetry.
Mission timeT+0:00
Altitude0.0 km
Velocity0.00 km/s
PhaseBoost
T+0:00 / 5:00
SimulatedRepresentative Redstone ascent profile — illustrative model, not this mission’s live telemetry.
The mission
Mercury-Redstone 4
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.
Around this launch
Related news
No news linked to this launch yet
As coverage publishes, deduplicated articles about this mission will appear here.
Good to know
Frequently asked
What time does Redstone MRLV | Mercury-Redstone 4 launch?
Redstone MRLV | Mercury-Redstone 4 is scheduled to lift off Fri, Jul 21, 1961, 12:20 PM UTC.
Where can I watch Redstone MRLV | Mercury-Redstone 4?
Watch the official live webcast embedded on this page — it goes live shortly before liftoff.
Who is launching Redstone MRLV | Mercury-Redstone 4?
Redstone MRLV | Mercury-Redstone 4 is an National Aeronautics and Space Administration mission flying on a Redstone.
Where does Redstone MRLV | Mercury-Redstone 4 launch from?
It lifts off from Launch Complex 5, Cape Canaveral SFS, FL, USA.