CST-100 Orbital Maneuvering and Attitude Control (OMAC) system
The Boeing CST-100 Starliner's service-module OMAC integrated chemical-thruster system used for orbital maneuvering and deorbit operations.
Identity
- Aliases
- Starliner OMACCST-100 OMACOrbital Maneuvering and Attitude Control thrusters
- Domains
- spaceflight
- Identity Level
- integrated-system
- Kind
- chemical-thruster
- Name
- CST-100 Orbital Maneuvering and Attitude Control (OMAC) system
- Status
- unknown
Details
- Description
- The Boeing CST-100 Starliner's service-module OMAC integrated chemical-thruster system used for orbital maneuvering and deorbit operations.
Links
Assets & Meta
- Creation Time
- August 5, 2026 at 01:54:42 UTC
- Updated Time
- August 5, 2026 at 01:54:42 UTC
Other
- Sources
- Accessed Date
- 2026-08-04
- Note
- Boeing's current specifications identify 20 service-module Orbital Maneuvering and Attitude Control (OMAC) thrusters at 1,500 lbf each, distinct from service-module and crew-module RCS thrusters.
- Publisher
- Boeing
- Title
- CST-100 Starliner
- Accessed Date
- 2026-08-04
- Note
- NASA describes the operational Starliner configuration with 20 orbital maneuvering and attitude control engines and separately identifies 28 service-module RCS engines and four launch-abort engines.
- Publisher
- NASA Commercial Crew Program
- Title
- Boeing's CST-100 Starliner Spacecraft
- Accessed Date
- 2026-08-04
- Note
- Boeing's propulsion summary locates the 20 OMAC engines on the service module and distinguishes them from the service-module RCS and launch-abort engines.
- Publisher
- Boeing
- Title
- Crew Flight Test Reporter's Notebook