Dynamic Concepts, Inc. personnel
support SLS Flight Mechanics (part of MSFC’s EV40 Flight Mechanics &
Analysis Division) in the area of abort and failure analyses. This
support involves designing the GN&C abort trigger envelopes, which when
exceeded cause the SLS to abort mission. The trigger thresholds are set in
order to save the crew in light of loss of vehicle control, but still allow the
mission to continue for certain failures where abort is not necessary. In
addition, DCI personnel are responsible for modeling the different SLS failure
modes included in cross-program analyses (thrust vector control (TVC) actuator
failures, liquid engine out and stuck throttle, booster case breach, booster
failure to separate, and booster failure to ignite). The SLS abort and
failure modeling is critical in determining mission success in light of
failures and securing the successful saving of the crew for catastrophic failures.
Previous work in this area was performed for the Ares I launch vehicle.