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ABL RS1 Block 1

RS1 Block 1 was the original flight configuration of ABL's small launch vehicle. The 26.8-metre, two-stage rocket used nine sea-level E2 engines on its first stage and one vacuum E2 engine on its upper stage. Its only launch, Demo-1 in January 2023, ended when the first-stage engines shut down shortly after liftoff and the vehicle fell back near the pad.

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Identity

Aliases
RS1 Block 1ABL RS1 flight configurationRS1 nine-engine configuration
Family Name
RS1
Full Name
ABL RS1 Block 1
Status
retired
Type
rocket
Variant Name
Block 1

Details

Description
RS1 Block 1 was the original flight configuration of ABL's small launch vehicle. The 26.8-metre, two-stage rocket used nine sea-level E2 engines on its first stage and one vacuum E2 engine on its upper stage. Its only launch, Demo-1 in January 2023, ended when the first-stage engines shut down shortly after liftoff and the vehicle fell back near the pad.
Dimensions
Diameter
…
Height
…
First Flight Year
2,023
Last Flight Year
2,023
Manufacturer
Operator
Parent Vehicle Family
Propulsion Configurations
  • Entries
    • Count
      9
      Placement
      core
      Propulsion System
      Role
      main
      Variant Notes
      Migrated from legacy reference "E2 Sea Level" without inventing a more precise installation.
    • Count
      1
      Placement
      upper
      Propulsion System
      Role
      upper-stage
Rocket Specs
Payload Capacity
GTO
…
LEO
…
Reusability
expendable
Stages Count
2
Strap On Boosters Count
0

Links

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Creation Time
July 14, 2026 at 05:51:26 UTC
Updated Time
July 29, 2026 at 13:45:07 UTC