NASA Releases DART Accident Report Summary

May 16, 2006
DART flight demonstrator, top left, rendezvous with the MUBLCOM satellite, bottom right, in orbit

NASA released a summary Monday of the findings about why its Demonstration of Autonomous Rendezvous Technology spacecraft did not complete its mission and collided with the intended rendezvous satellite on April 15, 2005.

Because the official mishap investigation board report contains information protected by U.S. International Traffic in Arms Regulations, it will not be publicly released. Instead, NASA has prepared a summary of the report, which omits the protected information. The summary is available at: http://www.nasa.gov/dart

This NASA craft was a low-cost, high-risk technology demonstrator, designed to establish autonomous rendezvous capabilities and proximity operations for the U.S. space program. It was successfully launched from Vandenberg Air Force Base, Calif., on April 15, 2005.

The spacecraft was to autonomously rendezvous with and perform a series of maneuvers in close proximity to a communications satellite no longer in use. The NASA spacecraft performed nominally during the first eight hours of the mission ― launch, checkout, and rendezvous phases. It accomplished all objectives up to that point, though ground operations personnel noticed some anomalies with the craft's navigation system.

During proximity operations, the spacecraft began using more propellant than expected. Approximately 11 hours into the mission, the craft detected its propellant supply was depleted and began a series of maneuvers for departure and retirement. Although not known at the time, it made contact with and boosted the rendezvous satellite's orbit 1.2 nautical miles higher. The rendezvous satellite was not damaged.

Both satellites are in low-Earth orbits that will not be a hazard to other spacecraft. They will eventually burn up upon re-entry into the Earth's atmosphere.

The spacecraft and the Pegasus launch vehicle were developed by Orbital Sciences Corp., Dulles, Va. NASA's Exploration Systems Mission Directorate funded the project.

The mishap investigation report was the result of an investigation by an eight-member board established by NASA on April 21, 2005. The summary of the report was produced by the Exploration Systems Mission Directorate.

Source: NASA

Explore further: Russian, American ready for a year in space

add to favorites email to friend print save as pdf

Related Stories

Image: Launch of first crewed Gemini flight

Mar 24, 2015

In a span of 20 months from March 1965 to November 1966, NASA developed, tested and flew transformative capabilities and cutting-edge technologies in the Gemini program that paved the way for not only Apollo, ...

OSIRIS catches glimpse of Rosetta's shadow

Mar 03, 2015

Several days after Rosetta's close flyby of comet 67P/Churyumov-Gerasimenko on 14 February 2015, images taken on this day by OSIRIS, the scientific imaging system on board, have now been downlinked to Earth. ...

ATV to bid farewell to space station for last time

Feb 11, 2015

ESA's last Automated Transfer Vehicle will leave the International Space Station on Saturday for its final solo voyage, setting course for a fiery demise that will mark the end of its mission and the programme.

Recommended for you

More evidence for groundwater on Mars

4 hours ago

Monica Pondrelli and colleagues investigated the Equatorial Layered Deposits (ELDs) of Arabia Terra in Firsoff crater area, Mars, to understand their formation and potential habitability. On the plateau, ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.