Charles Njenga

Principal systems engineer at Merlin Labs
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Location
Cedar Rapids, Iowa, United States, US

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Experience

    • United States
    • Biotechnology Research
    • Principal systems engineer
      • Aug 2022 - Present

    • Singapore
    • Industrial Machinery Manufacturing
    • 1 - 100 Employee
    • Principal Systems and Flight Test engineer
      • Nov 2018 - Aug 2022

      Provide technical leadership on development of stall protection systems for various platforms and product lineProvide technical leadership of flight controls software for various platformsPerform flight test on various aircraft such as C-130, Kingair, G280, global 5000/6000 Global 7500, Airbus A220 (Formerly CSeries)Create reports to substantiate performance in accordance with FAR 25.1329, AC25.7B/C/D, ARP4754 Rev - and Rev A AC 120-29A, AC 120-28Demonstrate performance in front of certification authorities and respond to any request for information from themDefend design in front of certification authoritiesMentor junior engineers on system development process and principlesMentor junior engineers on flight test and flight test activitiesLead flight test engineer on Viking Water Bomber, Mitsubishi Regional JetProject Engineer on Bombardier Global 7500 flight control systemScrum Master for Agile team

    • United States
    • Business Consulting and Services
    • 1 - 100 Employee
    • Sr. Systems and Flight test engineer
      • Aug 2008 - Nov 2018

      Work with other flight test engineers to test the autopilot and flight guidance system on the Bombardier CRJ-1000 aircraft.Work with other engineers to test the autopilot, flight guidance, autothrottle, and the stall system on the Gulfstream G280 aircraft.Assist in putting together the various certification reports and getting them reviewed.Demonstrate to the certification authorities via flight test, the ability to perform steeper approaches with the Rockwell Collins autopilot and flight guidance system on the Bombardier CRJ-900 and CRJ-1000 aircrafts.Create subsystem gateway tests for testing the Mitsubishi Regional Jet autothrottle, in the integration facility at Rockwell Collins prior to formal deliveryTroubleshoot autopilot related field issues on aircraft equipped with Rockwell Collins Autopilot systemCarry out lean initiatives to put all flight test tools into one place.Participate in lean initiatives to improve turnaround times for flight testing of Flight Control SystemsUpdate, maintain and troubleshoot Flight Test Instrumentation

    • Sr. systems engineer
      • Jan 2006 - Nov 2018

      Technical lead of the full development Stall protection system for the Proline Fusion* product line.Interface with customers to define system architecture including safety aspects and operational concepts.Interface with safety engineers to ensure system architecture will meet/meets FAA safety and availability standards.Produce top level stall protection requirements.Produce sub-level stall protection requirements.Create software architecture to meet system architecture as well as safety requirements.Perform modeling in Matlab Simulink that will be the basis of software code generation.Work with other system engineers to enable stall system integration to the Proline Fusion* avionics.Interface with software engineers to get software code written, documented and reviewed.Assist in writing PSAC documentation of software for the purposes of Software audits.Assist in troubleshooting the integrated software in the system integration environment.Review System Safety Analysis for Stall prior to its release.Responsible for ensuring software is released and integrated with the rest of the avionics suite.Responsible for testing software in the systems integration environment before delivery to the customer.Certification focal for stall protection system. Responsible for writing TSO-C54 deviations for stall.Responsible for showing means of compliance to TSO requirements.Responsible for assisting customer testing and troubleshooting on the aircraft and customer test station.

    • Co-op systems engineer
      • May 2005 - Aug 2005

      Write a white paper for stall protection function in the Data Concentrator Unit (DCU-6000).Capture high level stall protection requirements for product line developmentCarry out flammability analysis for various displays for the Boeing 787 dreamlinerCompile a training folder for new hires to understand the function and purpose of the DCU in commercial aircraft.Compile a stall protection folder for reference containing all stall protection information, including the white paper.Reference FAR part 25, Aerospace Standards and Aerospace Recommended Practices for composition of white paper.

    • Graduate research Assistant
      • Sep 2003 - Aug 2005

      Continued Rockwell Collins research of stall protection systems at ERAU.Produced a Simulink model of a simple stall protection system for a C-172.Summarized a report on the research finding and presented it

    • United States
    • Research
    • 1 - 100 Employee
    • Flight Test Engineer
      • Apr 2003 - May 2005

      Develop LabVIEW codes for data acquisition from various instruments such as GPS, thermocouples, transducers at the same frequency.Write Flight Test Plans for capturing C-172 flight test data.Write Flight Test Cards used by the Flight Test Pilot and Flight Test Engineer during aircraft testing.Record various maneuvers using LabVIEW during flight testing of aircraft such as C-172 and Piper Arrow.Reduce and Analyze Flight test data using Matlab and Excel to obtain necessary information such as performance and stability of the aircraft. Write FAA documentation for Level 6 Flight Training Devices for a C-172 currently in use at ERAU for flight training.

    • United States
    • Higher Education
    • 700 & Above Employee
    • Graduate teaching assistant
      • Sep 2003 - Apr 2005

      Instruct Instrumentation, materials and structures laboratories.Create experiments in instrumentation class that help students understand uses of various instruments on aircraft. Set up experiments such as torsion, tensile and cantilever beam for materials class.Create assign and instruct experiments to senior undergraduate students pertaining to real world structures problem, such as creating a car to transport hazardous materials.Grade student reports, presentations tests quizzes and homework.Correlate classroom instruction and real world experimentation using real world information.

    • Cook
      • Aug 2003 - Dec 2003

      Prepare dinner meals for ERAU students Clean and prepare grill for next shift Prepare dinner meals for ERAU students Clean and prepare grill for next shift

    • Student Assistant
      • Apr 2001 - Oct 2003

      Convert paper student records into software student records for back up purposes Organize and ensure integrity of records of extended campus students Convert paper student records into software student records for back up purposes Organize and ensure integrity of records of extended campus students

    • Hardware and Software integrator
      • Sep 2000 - Apr 2001

      Integrate CAPAS into Piper Cherokee aircraft shell.Work with team of Human Factors, systems and software engineers to get a fully operational Computer Performance Analysis System (CAPAS) in a demo trainer.Interface Occulometer with CAPAS demo trainerWork with team of Human Factors, systems and software engineers to integrate ISCAN Eye Camera Tracking System into aircraft shell trainer.Interface Occulometer software with CAPAS software.Interface Occulometer hardware with CAPAS hardware.Computer ProgrammingProgram Software interface in Microsoft Visual C++.Integrate with existing software.Participate in the software engineering process.Utilize Unified Modeling Language (UML) Tools.

    • Student Assistant
      • Apr 1999 - Oct 2000

      Sort mail and insert mail into correct student boxes Register and record outgoing mailDistribute departmental mail Sort mail and insert mail into correct student boxes Register and record outgoing mailDistribute departmental mail

Education

  • Embry-Riddle Aeronautical University
    Masters of science, Aerospace Engineering
    2005 - 2008
  • Embry-Riddle Aeronautical University
    Bachelors of Science, Aircraft Engineering Technology
    -

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