Vanguard SLV-6 launched on 22 June 1959. Restricted second-stage pressurant lines caused tank pressure to decay after ignition, followed by failure of the helium pressurizing sphere; the vehicle did not reach orbit.
Identity
Aliases
Vanguard Satellite Launch Vehicle 6
Name
Vanguard SLV-6
Slug
vanguard-slv-6
Status
destroyed
Details
Description
Vanguard SLV-6 launched on 22 June 1959. Restricted second-stage pressurant lines caused tank pressure to decay after ignition, followed by failure of the helium pressurizing sphere; the vehicle did not reach orbit.