NASA is taking a stepping-stone approach to the human journey to Mars.
The agency plans to start building a moon-orbiting space station, called the Lunar Orbital Platform-Gateway, in 2022. The Gateway will provide a place
NASA is taking a stepping-stone approach to the human journey to Mars.
The agency plans to start building a moon-orbiting space station, called the Lunar Orbital Platform-Gateway, in 2022. The Gateway will provide a place for humans to live for up to three months at a time, and it will continue to support scientific research even when nobody's on board.
The details of the Gateway are still being ironed out. Last year, NASA's Next Space Technologies for Exploration Partnerships program (NextSTEP) awarded a total of $65 million to six different companies vying to provide the main habitat module for the outpost. If all goes according to plan, these companies will deliver full-size prototypes of their modules to the agency for testing by sometime next year. [21 Most Marvelous Moon Missions of All Time]
Lockheed Martin is one of those competitors.
According to Kat Coderre, Lockheed's NextSTEP habitat systems engineering lead, "The whole goal of Gateway … is to basically get humans a little deeper into space, so we'll have a place where we can learn to do both science and actually have human missions for long duration away from Earth, with the ultimate goal of getting us on a good Martian mission and having that first human mission to Mars."
The Lockheed Martin team is working on assembling a mock-up of the Gateway habitat module at a company facility near Denver, which Space.com got to tour this past summer. The mock-up allows engineers to try out new ideas before implementing them in the prototype currently being constructed at NASA's Kennedy Space Center (KSC) in Florida.
"We are using an older piece of shuttle hardware, the [Donatello] MPLM — the Multi-Purpose Logistics Module — which was used to actually bring supplies to and from the space station," Coderre told Space.com.
Donatello was one of three large modules built to transfer cargo from the payload bay of a space shuttle to the International Space Station. Donatello never made it into space; the MPLM was decommissioned and is now being used as test equipment for the Gateway habitat.
Using Donatello in this way allows the Lockheed team to perform extremely precise tests before handing the Gateway project off to NASA, Coderre said. NASA will then begin to include humans in the testing loop "to help burn down some early risk on design and to determine what key areas NASA really needs to focus on for crewed missions," she said.
Currently, the test article at KSC is set to be completed by January of 2019, Coderre said.
"It's going to happen real fast," she said.
In recent months, engineers have set the baseline for what every piece of equipment in Florida should look like, she added. The first test hardware is already set up, and the engineers are picking up speed. "We're going to be [moving] at a pretty rapid pace from now on," Coderre said.
Tight living space
At about 15 feet wide and nearly 22 feet long (4.6 by 6.7 meters), the proposed Lockheed habitat is about as large as a bus or an RV. Once the Gateway is launched, astronauts would live in this confined space for as long as 90 days. The Denver mock-up, which emulated the decommissioned Donatello, was mostly empty space in June, but the final habitat 'will hold life-support systems, sleep stations, exercise machines, science lab space and robotic workstations.
According to Danielle Hauf, a Lockheed spokeswoman, the habitat's total pressurized volume is about 2,260 cubic feet (64 cubic meters). That compares to 691 cubic feet (20 cubic m) for the Orion capsule, the NASA spacecraft being built to carry humans into deep space. Orion will deliver crews to the Gateway habitat, where the vessel will remain docked.
Once the additional systems are installed, the habitable space will be much smaller, though Hauf said the final measurements will depend on how the spacecraft is configured — something the team is still working on. In any case, the final habitable volume will be a far cry from the 13,696 cubic feet (388 cubic m) of living space found aboard the International Space Station.
"We've always stated the need for at least two habitats," Coderre said. "Our architecture has been updated to show a second hab, and NASA's does now, too." She went on to say that to perform the right amount of science and test out new deep-space technology, it seemed clear that the habitat required "a little more space." [Cosmic Quiz: Do You Know the International Space Station?]
"And also for the crew's sanity," said Kerry Timmons, Lockheed's NextSTEP power, avionics and software lead.
One habitat would be for NASA's domestic logistics, while the other could be an international contribution, Coderre said. The habitat would also have ports that could work for visiting vehicles other than Orion, such as logistics, human vehicles, or robotic or human landers.
"It's really kind of a flexible platform where we can do a lot of different science, as well as different human exploration," Coderre said.
Chief among those is the Orion capsule, which Coderre called a "key element." Lockheed Martin is the prime contractor on the spacecraft, and both Coderre and Timmons came to th