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. TriVector's 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 (256) 898-3430 for assistance.