NASA chooses Maxar to build keystone module for lunar Gateway station – Spaceflight Now

0
38
Artist's illustration of the Gateway's Power and Propulsion Element. Credit: Maxar

NASA has selected Maxar Technologies for $ 375 million contract to design, build and launch the core of a mini-space station in orbiting the moon that will double as deep space research outpost and a staging point for future human expeditions to the lunar surface.

Fitted with high-power xenon thrusters and huge roll-out solar panels, the module will become the centerpiece of NASA's planned Gateway station in lunar orbit. NASA plans to add to the gateway in front of the moon as soon as 2024.

"The Gateway is a small space that we will put in orbit around the moon," said NASA Administrator Jim Bridenstine in a speech Thursday at the Florida Institute of Technology. "Think of it as a reusable command and service module that will be in orbit around the moon for 15 years, and the first element is the Power and Propulsion Element."

The Gateway will serve as a basis for safe operations for change in orbits, will carry substantial maneuvering capabilities to change orbits, enabling crews departing the station to reach any part of the moon, such as south pole location where measurements suggest water ice is present in permanently-shadowed craters.

Apollo astronauts landed in equatorial regions, but NASA wants future crews to explore the water deposits on polar sites, in hopes of eventually extracting the material to generate propellants, electricity, air and other consumables to support a long-term base.

Vice President Mike Pence charged NASA during a speech in March to return U.S. astronauts to the moon by 2024. The development of Gateway segments was already underway at the time of Pence's speech, on a peace to prepare for a human landing around 2028.

NASA Officials, a Canadian-built robotic arm, and a possible Japanese contribution, will be deferred in favor of building to minimal station by 2024.

The Gateway's first element will launch a commercial rocket by the end of 2022, followed in 2023 by the launch of the station's first pressurized segment, also on a commercial vehicle. The pressurized utilization module would have multiple docking ports to connect with the EPP, a lunar lander and visiting Orion crew capsules.

According to NASA's current plans, commercial rockets would launch two human-rated lunar landers that will be integrated into the Gateway for time 2024 landing attempt.

The astronauts that would land on the moon in 2024 would fly on the third tandem mission of NASA's government-managed space launch system, an oft-delayed heavy-lift rocket now scheduled for its first launch no earlier than late 2020, and the Orion crew ferry craft.

NASA named Artemis, the goddess of the moon and sister of Apollo in Greek mythology.

Under current plans, the Artemis 1 mission, formerly named Exploration Mission 1, will be the inaugural flight of the Orion crew capsules on an unpiloted flight to lunar orbit and back to Earth. After the Artemis 1 mission as soon as late 2020, the first SLS / Orion mission with astronauts would launch in late 2022 on a trip around the moon and back.

Artist's illustration of NASA's planned Gateway station in the lunar orbit, showing the outpost's core power and propulsion module, a small habitation module, a lunar lander, and an approaching Orion crew capsule. Credit: NASA

Accelerated moon program facing headwinds

The fast track will cost billions of dollars more than the previous five years. The White House's previous $ 21 billion budget request for NASA in fiscal year 2020, which begins Oct. 1

The funding to jump-start the moon program would come from surplus Pell Grant money.

But that’s just the start. Bridenstine has said NASA will need more than $ 1.6 billion in additional funding per year after 2020 in order to achieve a human landing on the moon in 2024, but Trump administration officials have not budgeted for the program's total cost.

Rep. Eddie said, “I am a supporter of challenging human space exploration endeavors that can take us to the moon and eventually to Mars. Bernice Johnson, D-Texas, chair of the House Committee on Science, Space and Technology.

"We don't know how much money will be required to meet the arbitrary 2024 moon landing deadline or how money will be spent … that provides a lifeline to low-income students, namely the Pell Grants program, in order to pay for the first year of this initiative – something that cannot be supported, ”Johnson said in a statement.

A House spending bill released May 16 did not include the $ 1.6 billion supplemental budget request from the Trump administration. The additional $ 1.6 billion requested for NASA would pay for early work on a human-rated lunar lander, and help keep the SLS and Orion programs on track for the unpiloted Artemis 1 test flight in late 2020.

A former aerospace industry official who joined NASA in April to help develop plans for human return to the moon by 2024

Mark Sirangelo, a longtime executive at Sierra Nevada Corp., has left NASA after Congress rejected a proposal to split its human spaceflight efforts into two divisions, to “Moon to Mars Mission Directorate” and a separate unit focusing on human spaceflight operations, such as those on the International Space Station in low Earth orbit.

In a memo to NASA employees Thursday, Bridenstine wrote that Sirangelo "opted to pursue other opportunities" now that the agency is no longer pursuing the reorganization.

Maxar's Gateway Contract has been modeled for NASA-industry partnerships

As timelines have shuffled for a return of U.S. astronauts to the moon, NASA sustainable development over the years or decades.

Maxar beat out proposals for the Power and Propulsion Element from Boeing, Lockheed Martin, Northrop Grumman and Sierra Nevada. Company officials said Maxar will leverage its long experience in building and operating large commercial communications satellites on the EPP development.

"He will not only achieve NASA's goals, but will be transformational for the private sector, creating jobs and innovation along the way," said Mike Gold, Maxar's vice president of civil space, in a conference call with reporters Thursday.

Maxar's SSL business unit, formerly known as Space Systems / Loral, based in Palo Alto, California, will lead development of the Gateway power and propulsion module. Maxar will partner with Blue Origin and Draper on the program.

Gold said Blue Origin will assist in human-rating and safety aspects of the EPP, while Draper will make contributions in navigation and trajectory design.

Officials have announced not only the PPE 's solar-electric propulsion system, but the spacecraft will feature large-area solar arrays that unroll like tape measure, rather than the rigid accordion-style panels used on most satellites. Developed by Deployable Space Systems in Goleta, Calif., The Roll-Out Solar Array, or ROSA, technology was first demonstrated in space in 2017 in an experiment sponsored by the U.S. Air Force.

The PPE's two solar power wings will generate at least 60 kilowatts of electricity at the beginning of the craft's 15-year design, more than once the power produced by the most powerful commercial communications satellites, according to Al Tadros, vice president of space infrastructure and civil space.

"We build satellites that are 20 to 30 kilowatts at beginning-of-life, so handling high power is part of our core competence," Tadros said in an interview with Spaceflight Now. “The spacecraft that we have for the Power and the Propulsion Element is a 60-kilowatt-class spacecraft, so yes, it is higher, but a lot of what we already do is applicable. I know the electric propulsion technology, the power processing units, those kinds of things that we already have experience with are applicable.

"For the solar array, to get that high power, went with our ROSA product, which is a product that we've started to adopt for our GEO comsats," Tadros said. “This is a higher (power) than we would normally have for a comsat, so there is some new development there, but that is fairly well-understood for our work with the supplier on the Roll-Out Solar Array.

“Other areas include the size of tanks for the xenon. There is a large xenon load to perform electric propulsion in cis-lunar space. And then, of course, it’s going to have to be able to take it out to the moon and to be able to support it and to support it in cis-lunar space. I know a lot of things that we do, maybe on a bigger scale, but we have the right expertise and facilities to build it. "

Maxar will choose a commercial launcher for the EPP, which is expected to weigh around 11,000 pounds (5 metric tons) at liftoff. Half of that weight will be xenon propellant for the spacecraft’s ion engines, which are more efficient than conventional liquid-fueled rocket thrusters.

The company 's operations will team up with the PPE from Maxar. The $ 375 million firm-fixed price contract announced Thursday includes the NASA purchase option.

NASA will supply roughly $ 10 million to $ 12 million in government-furnished equipment to Maxar for the EPP, including a S-band communications system to provide radio links to nearby ports, and a passive docking adapter to receive the Gateway's future habitat , or utilization module, according to Dan Hartman, the Gateway program manager at NASA's Johnson Space Center in Houston.

Maxar has not settled on a launcher yet for the EPP, according to Gold.

Tadros said the PPE is designed to separate from its commercial launch in Earth orbit, then use its onboard board to raise its altitude to intercept the moon, eventually swinging into a stable orbit around the moon.

"It has the capability to go into an Earth orbit, launch and separate into Earth orbit, and then transfer itself into a trans-lunar orbit and put itself into an NRHO (Near Rectilinear Halo Orbit)," Tadros said. "That is the nominal scenario, but depending on the ultimate configuration, that Earth could be a variety of apogees and perigees. So that has not been specified or decided yet. The vehicle has a tremendous amount of capability, as well as a tug would, to be able to transfer from Earth orbit to lunar orbit. "

File photo of an SSL-built communications satellite for Japan's SKY Perfect JSAT during encapsulation inside the payload fairing of a SpaceX Falcon 9 rocket. Credit: SpaceX

Tadros said the PPE's ability to maneuver itself could allow a maximum cost to rocket without limiting the company's launch options to the heaviest rockets available.

"That's one option," he said. "The first stage can be returned to the first stage." Those kinds of things will all get translated and decided, but the vehicle is very capable of a combination, and that flexibility is the attractiveness of the EPP. "

Specialties in the satellite business is building and operating geostationary telecom satellites, which often deploy off rockets in elliptical transfer orbits ranging from a few hundred miles to more than 22,000 miles (nearly 36,000 kilometers) above Earth.

Tadros said the PPE could deploy from its launcher into such an orbit, called a geostationary transfer orbit, before beginning the journey toward the moon.

"But there are other considerations," Tadros said. "For example, the Van Allen belts, the amount of time you spend on radiation, and so forth. I know, though, that you could do it. "

One benefit of the EPP’s roll-out solar panels is take up less room when stowed for launch. The spacecraft Maxar is designing to fit within the volume envelope of multiple rockets.

"That is one of the design requirements, which we are compatible with a variety of launch vehicles," Tadros said. "Their fairing sizes and such drive that requirement. We intend on the Power and Propulsion Element to be equally multi-use and multi-build, so we definitely want to make it compatible with multiple launch vehicles with ROSA and other configuration-driving items. "

Blue Origin's possible role in Maxar's Gateway proposal

Maxar's partnership with Blue Origin, Jeff Bezos's space company, in human-rating activities has raised speculation that the EPP might launch on Blue Origin's New Glenn rocket, which is still in development for its debut launch in 2021.

The New Glenn will be a heavy-lift rocket with a recoverable and reusable first stage. Blue Origin is also working on a privately-funded lander called the Blue Moon, which could deliver experiments, cargo and astronaut crews to the moon's surface.

A selection statement outlining NASA's rationale for picking Maxar for the PPE contract was released Friday, revealing new details about the company’s proposal.

Maxar's proposal to NASA included an unnamed co-manifested lunar lander, which would ride into space on the same launch vehicle as the Gateway power module. While the NASA selection statement does not identify Maxar's preferred rocket for the EPP, the agency's source selection official, Michele Gates, nicked Maxar's proposal with a “weakness for the use of currently heavy lift launch that adds uncertainty and risk to the launch vehicle ground processing and launch operations. "

“While I note that this issue does increase the risk of SSL's ability to successfully demonstrate its capability, I also acknowledge SSL's mitigation plan to maintain its capabilities developed over multiple launch vehicle options while monitoring the launch vehicle development process,” Gates wrote in the NASA selection statement.

Two rockets in the New Glenn's class are currently flying: SpaceX's Falcon Heavy and United Launch Alliance's Delta 4-Heavy. ULA's new Vulcan rocket will offer similar performance on a high-energy launch as the Delta 4-Heavy and the New Glenn, and somewhat more than the Falcon Heavy, assuming SpaceX sets aside to fuel to recover the Falcon Heavy's boosters.

According to the NASA selection statement, Maxar's EPP proposal was the least expensive of the five bids the agency received from the industry.

Max is designing the EPP to be refueled with xenon in space, enabling repeated maneuvers to different stations around the moon.

The "delivery-in-orbit" nature of Maxar's EPP is common in the commercial satellite industry, but it's new to NASA.

"We are procuring it (the EPP) in a way that we haven’t done before," Bridenstine said. "We will have an option to take possession of it after it’s on orbit. In other words, we’re buying it commercially. They are building it, and then if it all tests well, then we will acquire it as a country. This is a different way of procuring itself, and we need to get this change. We’re making these changes quickly. "

NASA intends to procure the Gateway's next section, the pressurized element, in a similar fashion later this year. The human-rated lunar lander will also be developed commercially.

"I think you can say that the EPP business practice has already been successful, just given that NASA went through the process and awarded a contract as quickly as it did," Gold said. “The technology can be challenging, but the procurement process of equal if not greater importance sometimes – in developing and actually deploying hardware – than the engineering.

"I believe that this is the most commercial program that NASA has run that does not have the commercial word in it," Gold said, a reference to NASA's commercial cargo and commercial crews that fostered new privately-developed spacecraft to service the International Space Station. "And I think it is representative of the future for the agency and the procurement process, and I think this has already been successful in moving quickly and getting high quality and affordable and reliable product."

Email the author.

Follow Stephen Clark on Twitter: @ StephenClark1.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.