Space Launch System (SLS) Guidance, Navigation and Control (GNC) Engineer

TriVector Services Inc. provides quality aerospace engineering solutions to complex problems through a renowned team of engineering professionals. We are a Service-Disabled Veteran-Owned SBA-certified Small Business headquartered in Huntsville Alabama. Our experienced team is dedicated to building lasting partnerships based on professional integrity and sound engineering principles. TriVectors Experience and exceptional Performance adds measurable Value to every project. TriVector Services Inc. is seeking qualified candidates to fill our Space Launch System (SLS) Guidance Navigation and Control (GNC) Engineer position.

The SLS GNC Engineer will provide Systems Engineering and Integration (SE&I) expertise to Marshall Space Flight Center (MSFC) in support of the Space Launch System (SLS) Guidance Navigation and Control (GNC) team. Responsibilities for this position include but are not limited to the following:

• Guidance algorithm design development and test as part of guidance navigation and control (GNC) model incorporation into simulations and flight software for SLS.
• Develop and review technical reports presentations and formal documentation on guidance performance analyses and model development.
• Derive develop and analyze sensor models (inertial measurement unit rate gyro assembly etc.) in a high-fidelity simulation environment.
• Conduct trades and sensitivities surrounding vehicle system and subsystem configuration changes and various implementations and interactions with GNC subsystems.
• Implement mitigations for flight software change requests and discrepancy report items as requested by the SLS Guidance Team Lead.
• Evaluate integrated vehicle system response to various changes in guidance design for verification/validation of vehicle requirements and mission objectives.
• Conduct Monte Carlo dispersion analyses to assess vehicle and GNC system performance.
• Conduct guidance subsystem performance analyses to support requirement specification development and requirement compliance.
• Communicate design and analyses results internally and externally to the Guidance Team.
• Support technical meetings working groups milestone reviews and task teams in support of integration and analysis with other SLS elements (including SPIE Stages VM Avionics etc.).
• Support interrelated areas to guidance in the SLS Vehicle Management discipline as requested by the VM DLE.
• Assist trajectory/GN&C analysis production and delivery as required by the VM DLE.
• Conduct model development MAVERIC simulation set-up and analysis and produce Monte Carlo results as requested by the VM DLE.

Minimum Qualifications:

• US citizenship required.
• Minimum of B.S. in engineering (aerospace engineering preferred) with 8 years of experience or an M.S. with 5 years of experience is required.
  • Experience should be in development of GNC or conducting flight mechanics analysis for launch vehicles spacecraft missiles or similar types of vehicles.
• Must have experience in development of GNC or conducting flight mechanics analysis for launch vehicles spacecraft missiles or similar types of vehicles.
• Experience in implementing and optimizing navigation algorithms including Kalman filtering and inertial navigation.
• Knowledge of Fault-Tolerant Navigation systems and how to design navigation systems that can continue to operate even in the presence of sensor or system failures.
• Expertise in applying cascading filters to combine multiple sensor data streams.
• Strong familiarity with commonly used astrodynamic reference coordinate frames (Earth centered body centered inertial and non-inertial).
• Deep understanding with frame-transformation quaternion mathematics.
• Solid background knowledge in orbital mechanics dynamics Kalman filtering state estimation control theory and/or optimization.
• Experience with configuring executing and analyzing high-fidelity 3- and 6-DOF simulations to verify mission requirements validate sensor model implementation and/or perform relevant trade studies.
• Familiarity with Monte Carlo methodology and statistical analysis.
• Coding/programming languages (mid-to-high level of proficiency): C Matlab and/or Python.
• Must have excellent oral and written communication skills.
• Must be proficient with Microsoft Office product with expertise in Excel and PowerPoint.
• Must be able to work independently.
• Must be able to work onsite at Marshall Space Flight Center.
• Occasional travel (<10%) may be required.

Disability Accommodation for Applicants TriVector Services Inc. is an Equal Employment Opportunity employer and provides reasonable accommodation for qualified individuals with disabilities and disabled veterans in its job application procedures. If you have any difficulty using our online system and you need an accommodation due to a disability or any other reason please call us at for assistance.