NASA’s plan to put astronauts back on the moon by 2020 hinges on their ability to develop a launch vehicle with the capability to deliver the Orion crew exploration vehicle and enough payload capacity to make NASA’s vision for a permanent moon base a reality.  This past Wednesday, September 10, the Ares I launch vehicle passed a critical design review marking an important milestone in the development of the rocket.

Ares Rocket Collage (February 2008)

The Ares I launch vehicle is a two-stage rocket topped by the Orion crew capsule, capable of carrying four to six astronauts.  The first-stage booster is a five-segment, reusable solid rocket motor derived from the space shuttle.  This first stage engine takes the vehicle into low earth orbit at which point the first stage booster separates and the second-stage J-2X engine ignites taking the crew capsule into circular orbit.

It is anticipated that the Ares I will be taking astronauts and small payloads to the International Space Station no later than the year 2015.  From there, it is on to the moon in 2020.  With a payload capacity of 25 tons, the Ares I may also be used to ‘park’ supplies in orbit for other space vehicles to retrieve and take on to the moon.

The Orion Crew Exploration Vehicle has been described as, “Apollo on steroids,” by NASA’s Michael Griffin.  It is projected to be one and a half times as wide as Apollo with double the passenger volume.  This means that Ares I has to have enough muscle to break the Earth’s gravity and get it into orbit. While there are many more reviews to go involving more than a thousand scientists and engineers, Ares I appears to have a bright future and may bring the promise of progress into a new era of space exploration.

Ares I rocket collage image courtesy of Flickr user nasa1fan published under the CC license.

Orion Crew Exploration Vehicle image courtesy of Flickr user Lockheed Martin published under the CC license.