Ares I-Y was to be a structural test flight in the Ares I

Ares I

Ares I was the crew launch vehicle that was being developed by NASA as part of the Constellation Program. The name "Ares" refers to the Greek deity Ares, who is identified with the Roman god Mars...

 spacecraft development program. The test flight vehicle would have been similar to the Ares I-X

Ares I-X

Ares I-X was the first stage prototype and design concept demonstrator in the Ares I program, a launch system for human spaceflight developed by the United States space agency, NASA. Ares I-X was successfully launched on October 28, 2009...

 mission, launched on October 28, 2009. The mission had a planned scheduled launch for September 2013, but the schedule was later changed to delay the launch to March 2014, and was later canceled in favor of a yet-to-be defined test flight.

The test flight would have consisted of a five-segment reusable solid-rocket first stage with a flight-production upper stage, containing a dummy, or possibly real, J-2X

J-2 (rocket engine)

Rocketdyne's J-2 rocket engine was a major component of the Saturn V rocket used in the Apollo program to send men to the Moon. Five J-2 engines were used on the S-II second stage, and one J-2 was used on the S-IVB third stage. The S-IVB was also used as the second stage of the smaller Saturn IB...

 engine. It would have been used to perform a high altitude abort test of the Launch Escape System with a boilerplate Orion capsule. The first crewed missions of Ares I are scheduled to launch no later than 2015.

Since its cancellation, NASA has proposed using an "Ares I-X Prime" mission to fulfill the I-Y's suggested objectives.

See also

• Ares I
  Ares I
  Ares I was the crew launch vehicle that was being developed by NASA as part of the Constellation Program. The name "Ares" refers to the Greek deity Ares, who is identified with the Roman god Mars...
  
  
• Ares I-X
  Ares I-X
  Ares I-X was the first stage prototype and design concept demonstrator in the Ares I program, a launch system for human spaceflight developed by the United States space agency, NASA. Ares I-X was successfully launched on October 28, 2009...
  
  
• Ares V
  Ares V
  The Ares V was the planned cargo launch component of the Constellation program, which was to have replaced the Space Shuttle after its retirement in 2011. Ares V was also planned to carry supplies for a human presence on Mars...
  
  
• Constellation program
• Orion (spacecraft)
  Orion (spacecraft)
  Orion is a spacecraft designed by Lockheed Martin for NASA, the space agency of the United States. Orion development began in 2005 as part of the Constellation program, where Orion would fulfill the function of a Crew Exploration Vehicle....