NASA’s deep space agenda could pick up speed with the space agency revealing that it is considering putting astronauts on an upcoming test flight of its Orion spacecraft.
Under its deep space intentions, NASA aims to take humans to where they have never been before – first to Mars and possibly beyond, the space agency has said time and again over the last couple of years. In lines with these plans, NASA recently revealed that it is conducting feasibility tests for adding a crew to the first integrated flight of Space Launch System (SLS) rocket and Orion spacecraft, Exploration Mission-1 (EM-1).
A study is already underway to review the technical feasibility, risks, benefits, additional work required, resources needed and any associated schedule impacts to add crew to the first mission, the space agency revealed.
NASA said that while these assessments are underway, they are in no way any indicator of a decision being made. Further, the primary mission for EM-1 remains an uncrewed flight test.
The assessment is evaluating the advantages and disadvantages of this concept with regards to short- and long-term goals of achieving deep space exploration capabilities, NASA said. It will assume launching two crew members in mid-2019, and consider adjustments to the current EM-1 mission profile.
During the first mission of SLS and Orion, NASA plans to send the spacecraft into a distant lunar retrograde orbit, which will require additional propulsion moves, a flyby of the Moon and return trajectory burns.
The mission is planned as a challenging trajectory to test manoeuvres and the environment of space expected on future missions to deep space.
If the agency decides to put crew on the first flight, the mission profile for Exploration Mission-2 would likely replace it, which is an approximately eight-day mission with a multi-translunar injection with a free return trajectory.
NASA is investigating hardware changes associated with the system that will be needed if crew are to be added to EM-1. As a starting condition, NASA would maintain the Interim Cryogenic Propulsion stage for the first flight. The agency will also consider moving up the ascent abort test for Orion before the mission.
Regardless of the outcome for the study, the feasibility assessment does not conflict with NASA’s ongoing work schedules for the first two missions. Hardware for the first flight has already started arriving at NASA’s Kennedy Space Centre in Florida, where the missions will launch from the agency’s historic Pad 39B.