[NASA] James Gentile: Shaping the Artemis Generation, One Simulation at a Time

[SpaceMan 0]

James Gentile always wanted to fly. As he prepared for an appointment to the U.S. Air Force Academy to become a pilot, life threw him an unexpected curve: a diagnosis of Type 1 diabetes. His appointment was rescinded. 

With his dream grounded, Gentile had two choices—give up or chart a new course. He chose the latter, pivoting to aerospace engineering. If he could not be a pilot, he would design the flight simulations that trained those who could. 

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Official portrait of James Gentile.

NASA/Robert Markowitz 

As a human space vehicle simulation architect at NASA’s Johnson Space Center in Houston, Gentile leads the Integrated Simulation team, which supports the Crew Compartment Office within the Simulation and Graphics Branch. He oversees high-fidelity graphical simulations that support both engineering analysis and flight crew training for the Artemis campaign. 

His team provides critical insight into human landing system vendor designs, ensuring compliance with NASA’s standards. They also develop human-in-the-loop simulations to familiarize teams with the challenges of returning humans to the lunar surface, optimizing design and safety for future space missions. 

“I take great pride in what I have helped to build, knowing that some of the simulations I developed have influenced decisions for the Artemis campaign,” Gentile said.  

One of the projects he is most proud of is the Human Landing System CrewCo Lander Simulation, which helps engineers and astronauts tackle the complexities of lunar descent, ascent, and rendezvous. He worked his way up from a developer to managing and leading the project, transforming a basic lunar lander simulation into a critical tool for the Artemis campaign. 

What began as a simple model in 2020 is now a key training asset used in multiple facilities at Johnson. The simulation evaluates guidance systems and provides hands-on piloting experience for lunar landers. 

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James Gentile in the Simulation Exploration and Analysis Lab during a visit with Apollo 16 Lunar Module Pilot Charlie Duke. From left to right: Katie Tooher, Charlie Duke, Steve Carothers, Mark Updegrove, and James Gentile.

NASA/James Blair

Before joining Johnson as a contractor in 2018, Gentile worked in the aviation industry developing flight simulations for pilot training. Transitioning to the space sector was challenging at first, particularly working alongside seasoned professionals who had been part of the space program for years. 

“I believe my experience in the private sector has benefited my career,” he said. “I’ve been able to bring a different perspective and approach to problem-solving that has helped me advance at Johnson.” 

Gentile attributes his success to never being afraid to speak up and ask questions. “You don’t always have to be the smartest person in the room to make an impact,” he said. “I’ve been able to show my value through my work and by continuously teaching myself new skills.” 

As he helps train the Artemis Generation, Gentile hopes to pass on his passion for aerospace and simulation development, inspiring others to persevere through obstacles and embrace unexpected opportunities. 

“The most important lessons I’ve learned in my career are to build and maintain relationships with your coworkers and not to be afraid to step out of your comfort zone,” he said.  

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James Gentile with his son at NASA’s Johnson Space Center during the 2024 Bring Youth to Work Day.

His journey did not go as planned, but in the end, it led him exactly where he was meant to be—helping humanity take its next giant leap. 

“I’ve learned that the path to your goals may not always be clear-cut, but you should never give up on your dreams,” Gentile said. 

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