Antares IIB
Antares IIB is the exact solid third-stage motor used in the Scout D-1 configuration, retained separately from Antares IIIA and other Antares variants. NASA's Scout characteristics table lists 93.05 kN average thrust and a nominal burn time of 37 seconds for the D-1 Antares IIB stage. NASA's Scout Nozzle Data Book documents the IIB nozzle and its limited alternate use in the Scout third stage; no exact canonical AeroVia company record is available for the historical ABL/Hercules contractor boundary, so developer and manufacturer links remain empty. NASA records the final Scout launch on 5 August 1994, so this Scout-specific motor designation is marked retired.
Identity
- Aliases
- Antares 2BScout D-1 third-stage Antares IIB
- Domains
- spaceflight
- Identity Level
- variant
- Kind
- solid-rocket-motor
- Name
- Antares IIB
- Status
- retired
Details
- Description
- Antares IIB is the exact solid third-stage motor used in the Scout D-1 configuration, retained separately from Antares IIIA and other Antares variants. NASA's Scout characteristics table lists 93.05 kN average thrust and a nominal burn time of 37 seconds for the D-1 Antares IIB stage. NASA's Scout Nozzle Data Book documents the IIB nozzle and its limited alternate use in the Scout third stage; no exact canonical AeroVia company record is available for the historical ABL/Hercules contractor boundary, so developer and manufacturer links remain empty. NASA records the final Scout launch on 5 August 1994, so this Scout-specific motor designation is marked retired.
- Propellants
- solid composite propellant
- Rocket Specs
- Burn Time S
- 37
- Sea Level Thrust Kn
- 93.05
Links
Assets & Meta
- Creation Time
- August 1, 2026 at 16:01:39 UTC
- Updated Time
- August 21, 2026 at 01:17:41 UTC
Other
- Sources
- Accessed Date
- 2026-08-01
- Note
- NASA's Scout characteristics table identifies the D-1 stack's third stage as Antares IIB and provides the historical Scout stage data.
- Publisher
- NASA
- Title
- NASA Historical Data Book, Volume III — Launch Vehicles
- Accessed Date
- 2026-08-01
- Note
- NASA's Scout performance study includes Antares IIB in the exact Scout D-1 motor stack.
- Publisher
- NASA Technical Reports Server
- Title
- Scout D-1 reference trajectories and motor configuration
- Accessed Date
- 2026-08-01
- Note
- The U.S. Air Force museum identifies Hercules Antares 2A in the Scout D configuration and provides historical stage context; the record retains the exact Antares IIB designation separately.
- Publisher
- National Museum of the United States Air Force
- Title
- Scout D: Air Force and NASA Workhorse
- Accessed Date
- 2026-08-20
- Note
- NASA's Scout Nozzle Data Book documents the Antares IIB nozzle, its higher-performance smaller-throat design, and limited alternate use for the Scout third stage.
- Publisher
- NASA Technical Reports Server
- Title
- SCOUT Nozzle Data Book
- Accessed Date
- 2026-08-20
- Note
- NASA's 1994 release identifies the 5 August 1994 flight as the final Scout launch, supporting retired lifecycle treatment for this Scout-specific motor designation.
- Publisher
- NASA
- Title
- Scout launch vehicle to retire after 34 years of service