From Space Station Cargo Delivery to Deep Space Crew Habitats: Northrop Grumman’s Versatile Cygnus Spacecraft

With approximately 7,400 pounds of science experiments, tools and food tightly packed inside, Northrop Grumman’s Cygnus spacecraft was launched aboard an Antares rocket and began its journey to the International Space Station on Monday, May 21. Just three days later, the spacecraft reached its destination where it was greeted with a warm welcome from astronauts awaiting its arrival. This mission marks the company’s ninth cargo delivery to the orbiting laboratory. While the delivery of cargo and removal of trash has become almost routine for the cargo module, each mission is unique and continues to demonstrate the capabilities of the Cygnus spacecraft.

The Cygnus resupply ship with its round, brass-colored UltraFlex solar arrays is guided to its port on the Unity module shortly after it was captured with the Canadarm2 robotic arm on May 24, 2018. (Credit: NASA)

For this mission, Cygnus was named after J.R. Thompson, a distinguished leader in the aerospace industry. On May 24, the S.S. J.R. Thompson docked with the International Space Station before beginning the second phase of its mission. On July 10, Cygnus marked a major milestone as the first U.S. spacecraft to perform an altitude reboost of the International Space Station since the space shuttle fleet retired in 2011. A 50-second firing of the spacecraft’s engines raised the orbiting laboratory’s altitude by about 295 feet. Reboosts are a routine station maneuver that occur several times a year. The station orbits in an area where there is just enough residual atmosphere to cause drag on the vehicle which lowers its altitude over time. Reboosts raise the station back up, typically a couple of kilometers at a time.

Upon leaving the International Space Station on July 15, Cygnus released six cube satellites from the attached Nanoracks deployer before performing a safe and destructive reentry into Earth’s atmosphere over the Pacific Ocean. Although the removal of garbage may not seem like an exciting task, it is a critical part of keeping the station safe and clean for astronauts to work. In past missions, Cygnus has also been used as an extension of the space station by serving as a scientific platform, demonstrating its ability to expand the station’s capabilities for hosting experiments.

The S.S. J.R. Thompson is grappled by the International Space Station's Canadarm2 on May 24. (Credit: NASA)

But these are just the beginnings of Cygnus’s capabilities. In preparation for future crewed trips to deep space, Northrop Grumman has already begun the process of evolving Cygnus beyond low Earth orbit with the completion of Next Space Technologies for Exploration Partnerships (NextSTEP) Phase 1. For this initiative, NASA asked companies to conduct concept studies and explore technology needed for deep space exploration. To help achieve this goal, Northrop Grumman has turned its attention to the demonstrated versatility of Cygnus. NextSTEP Phase 2 is now underway, and the company is maturing the technology and design to construct on-ground simulators of a deep space habitat.

Northrop Grumman has used computer simulations to demonstrate that the company could possibly launch a habitat module aboard NASA's heavy lift Space Launch System (SLS) rocket with a crewed Orion capsule. On this potential mission, Cygnus would deploy as an initial habitat in cislunar space. When the Orion capsule and its crew return to Earth, the module would remain, operating autonomously, serving as a platform for experiments and potentially as a destination for future crewed missions.

Artist concept of a Cygnus-derived deep space habitat and logistics modules.

Eventually, additional modules would be added to the habitat, creating a cislunar outpost, and could even serve as disposable vehicles to deliver crew supplies and experiments. The modularity of the system allows for additional segments, including a node to provide supplemental docking ports that would allow for multiple visiting vehicles. Ultimately, crewed missions would help mature technologies for long duration human space exploration, including a trip to Mars.

In the meantime, Northrop Grumman will continue to meet the requirements of the Commercial Resupply Services contract (CRS) delivering cargo to the International Space Station. Under the current contract, CRS-1, Northrop Grumman will deliver approximately 66,000 pounds of cargo to the station, and beginning in 2019, the company will carry out a minimum of six initial cargo missions under the CRS-2 contract. This partnership is helping to cultivate a robust American commercial space industry.

Northrop Grumman’s Cygnus Spacecraft Begins Secondary Mission in Space

“S.S. J.R. Thompson” departs International Space Station and successfully completes international space station reboost

DULLES, Va. – July 15, 2018 –Northrop Grumman Corporation (NYSE: NOC) announced that its Cygnus™ spacecraft, following a highly successful stay at the International Space Station, has departed from the station to begin the next phase of its mission. While docked with the station, Cygnus performed a reboost experiment for the International Space Station demonstrating the spacecraft’s capability to raise the orbiting laboratory’s orbit. The “S.S. J.R. Thompson” is now set to deploy six CubeSats in orbit before reentry into the Earth’s atmosphere. This mission marks the fifth time that Cygnus has been used for NanoRacks CubeSat deployments during its secondary payload mission phase.

From May 24, 2018 when the CRS-9 “S.S. J.R. Thompson” Cygnus arrived at the International Space Station and delivered approximately 7,400 pounds of cargo to astronauts on board. The spacecraft successfully departed from the station on July 15. 

Cygnus departed from the International Space Station at 8:37 a.m. ET. Five days before departure, the space station reoriented itself and Cygnus fired its thrusters for the International Space Station reboost demonstration, making Cygnus the first American spacecraft to reboost the station since the retirement of the Space Shuttle fleet seven years ago. The spacecraft spent 52 days at the station before leaving with more than 6,600 pounds (over 3,000 kilograms) of disposable cargo, a new record for Cygnus.

“This mission once again demonstrates the expanded capabilities for Cygnus and paves the way for future mission objectives,” said Frank Culbertson, president, space systems group, Northrop Grumman. “Cygnus performed extremely well during the International Space Station orbit raising experiment, and now the next phase of our extended orbital mission is ready to begin with the deployment of six CubeSats.”

The mission began May 21 when Cygnus launched aboard a Northrop Grumman Antares™ rocket from NASA’s Wallops Flight Facility in Virginia. Upon arrival at the orbiting laboratory, Cygnus delivered approximately 7,400 pounds (3,350 kilograms) of cargo and science experiments to the astronauts, marking the company’s ninth operational mission to the International Space Station.

Following unberthing, the “S.S. J.R. Thompson” will raise its orbit above the International Space Station and use a NanoRacks CubeSat deployer to release six CubeSats into orbit. Four of the CubeSats will join Spire Global’s commercial weather satellite constellation for global ship and weather tracking. The NanoRacks manifest also includes the AeroCube 12A and 12B satellites. These two CubeSats come from the Aerospace Corporation and test new star tracker imagers and high-efficiency solar panels.

The mission is expected to end July 30 when Cygnus will execute a safe, destructive reentry into the Earth’s atmosphere over the Pacific Ocean. Stay informed with real-time updates on the science experiments aboard Cygnus through Northrop Grumman’s Twitter account: https://twitter.com/northropgrumman.