Juno-I

A Redstone with three clustered stages of small solid rockets, built by von Braun's team. On 1 February 1958 it launches Explorer 1, the first American satellite; half of its six launches fail.

Launches

6

Success rate

50%

3 failures

First flight

1 February 1958

Explorer 1

Last flight

23 October 1958

Beacon

Builder

Chrysler

Height

21.2 m

Diameter

1.8 m

Stages

4

Propellants

Hydyne / LOX, Solid

Payload to LEO

11 kg