Atlas V 421 is the configuration with a four-meter payload fairing, two strap-on solid rocket boosters, and a single-engine Centaur upper stage. It first flew on 2007-10-11; 9 vehicles have flown through 2022-08-04.
Identity
Family Name
Atlas V
Full Name
Atlas V 421
Reusability
expendable
Slug
atlas-v-421
Status
retired
Type
rocket
Variant Name
421
Details
Description
Atlas V 421 is the configuration with a four-meter payload fairing, two strap-on solid rocket boosters, and a single-engine Centaur upper stage. It first flew on 2007-10-11; 9 vehicles have flown through 2022-08-04.