T-2 days and counting to NASA’s Orion EFT-1

The first orbital flight of the Orion spacecraft will allow NASA and it’s contractor Lockheed Martin to verify the design of the vehicle in space itself, for this flight there will be no crew members however there will be a vast amount of instrumentation and sensors on board to provide as much data as possible during the mission.

While Orion is designed to fly on the Space Launch System (SLS) in the long term because the rocket isn’t ready to fly yet this mission will be flown using a United Launch Alliance (ULA) Delta IV Heavy rocket.

This is the first flight into space for Orion but it isn’t the first flight, a number of drop tests have already been performed to allow the parachutes and other systems used during landing to be validated, in addition a number of tests have been performed in a large pool to verify that the vehicle can right itself should it land in the wrong orientation.  Like the Apollo module used for the moon missions Orion will land on water, a number of tests have been performed to verify that the recovery ships can retrieve the module once it has landed.

EFT-1 Mission Diagram
EFT-1 Mission Diagram

The four and a half hour flight will take the Orion spacecraft on two orbits of Earth. Peak altitude will be approximately 3,600 miles. The high altitude will allow the the spacecraft to reach reentry speeds of up to 20,000 mph, which will expose the heat shield to temperatures up to around 4,000 °F, or 80% of the temperature that would be experienced upon reentry from a moon mission.

Next update tomorrow we will look at the future for Orion and SLS.

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