NASA has awarded Denmar Technical Services of Nevada a contract to modify, maintain, and test the agency's reduced gravity aircraft. The work supports the Human Spaceflight Mission Directorate at Armstrong Flight Research Center in Edwards, California, and Johnson Space Center in Houston.
The reduced gravity aircraft, commonly called the "vomit comet," serves as a critical training platform for astronauts preparing for spaceflight. By executing parabolic flight maneuvers, the aircraft creates brief periods of weightlessness that allow crews to rehearse microgravity procedures in an environment that closely mirrors orbital conditions. Astronauts conduct experiments, test equipment, and practice emergency protocols during these flights before deployment to the International Space Station or other missions.
Denmar's contract covers the full scope of aircraft operations needed to keep this specialized platform operational. The modifications ensure the aircraft remains current with evolving mission requirements, while maintenance sustains airworthiness and performance standards. Testing services validate that systems function correctly before and after any changes.
The firm-fixed-price structure with time-and-materials provisions for unforeseen work provides NASA budgetary certainty while maintaining flexibility for unexpected repairs or modifications that arise during operations. This contracting approach balances cost predictability with the practical realities of maintaining aging, heavily used research aircraft.
Armstrong Flight Research Center manages NASA's experimental aircraft fleet and serves as the hub for aeronautical research. Johnson Space Center oversees astronaut training and mission control operations for crewed spaceflight. The reduced gravity aircraft remains essential to both centers' work in preparing humans for weightlessness and validating procedures before they are executed at operational altitudes.
This modification and maintenance contract sustains a capability that NASA has relied on for decades to train astronauts. With renewed focus on lunar exploration through Artemis and expanded International Space Station utilization, the demand for accessible microgravity training platforms