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Home NASA

After 4-Month-Plus Keep, NG-19 Cygnus Cargo Ship Leaves House Station

December 24, 2023
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After 4-Month-Plus Keep, NG-19 Cygnus Cargo Ship Leaves House Station
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Northrop Grumman Corp.’s NG-19 Cygnus (seen at left) spent greater than 4 months on the Worldwide House Station (ISS). Picture Credit score: NASA

After greater than 4 months spent moored on the Worldwide House Station (ISS), Northrop Grumman Corp.’s NG-19 Cygnus cargo ship—named in honor of Dr. Laurel Clark, a Navy flight surgeon, deep-sea diver and crew member on shuttle Columbia’s remaining voyage, STS-107 in early 2003—departed the sprawling orbital complicated early Friday, sure for a January deorbit and harmful re-entry. Separation of NG-19 occurred at 8:05 a.m. EST and now leaves the Earth-facing (or “nadir”) port of the station’s Unity node free for its subsequent resident: the NG-20 Cygnus, attributable to arrive late subsequent month.

Video Credit score: NASA

Forward of NG-19 lies a number of weeks of autonomous science and know-how analysis, together with the sixth and remaining iteration of the Spacecraft Hearth Security (SAFFIRE-VI) experiment, developed by NASA’s Glenn Analysis Heart (GRC) in Cleveland, Ohio. This long-ranging sequence of investigations sought to grasp combustion, smoke habits and flame-spreading traits and their affect upon spacecraft habitability.

On 5 prior Cygnus missions between June 2016 and January 2021, SAFFIRE observations occurred after the cargo ship had departed the ISS and the station’s crew was uncovered to no hazard. Its experiments have been carried out inside self-contained modules, measuring 3 ft (0.9 meters) x 5 ft (1.5 meters), divided right into a sensor-filled avionics bay, high-definition video cameras and signal-processing {hardware} and a combustion chamber through which samples have been burned.

Canadarm2 (high) approaches Cygnus on 4 August for seize. Picture Credit score: NASA

On SAFFIRE-I in June 2016, a chunk of Stable Inflammatory Boundary at Low Velocity (SIBAL) material—a cotton mix on a fiberglass substrate—was ignited by a scorching wire, marking the most important in-space hearth ever carried out. 5 months later, within the remaining part of the OA-5 Cygnus mission, the envelope was pushed additional by burning 9 samples, together with SIBAL and Plexiglas and Nomex specimens; the latter usually are used on spacecraft for home windows and as fire-retardant supplies.

Larger fuel-flow velocities have been explored within the SAFFIRE-III burns in June 2017. And in Could 2020, SAFFIRE-IV started the primary of three remaining missions to run at decrease atmospheric pressures of 8.2 psia and a 34-percent oxygen degree, considerably greater than situations out there on Earth.

Frank Rubio (left) and Warren “Woody” Hoburg are pictured within the area station’s multi-windowed cupola shortly after NG-19’s seize on 4 August. The cargo ship is seen within the background, securely affixed to Canadarm2. Picture Credit score: NASA

It’ll mark a dramatic closure to a mission which bought underway final 1 August, with a rousing 8:31:14 p.m. EDT liftoff atop Northrop Grumman’s 133-foot-tall (40.5-meter) Antares 230+ booster from ocean-hugging Pad 0A on the Mid-Atlantic Regional Spaceport (MARS) on Wallops Island, Va. The Cygnus cargo ship was laden with greater than 8,200 kilos (3,700 kilograms) of kit, payloads and provides for the area station’s incumbent Expedition 69 and upcoming Expedition 70 crews.

Ready on-orbit have been Expedition 69 astronauts Warren “Woody” Hoburg and Frank Rubio, who respectively fulfilled prime and backup roles for the robotic seize and set up of NG-19. At 5:52 a.m. EDT on 4 August, the duo oversaw Cygnus’ seize utilizing the station’s 57.7-foot-long (17.6-meter) Canadarm2, after which Mission Management remotely commanded the robotic arm to rotate the cargo ship into place and set up it onto Unity’s nadir port interface.

Shortly after opening NG-19’s hatch, Expedition 69 astronaut Steve Bowen poses with a commemorative card for Cygnus’ namesake, Dr. Laurel Clark. Picture Credit score: NASA

Inside days, NG-19’s hatches have been open for enterprise because the Expedition 69 crew set about unpacking cargo and provides. Its suite of experiments ran the gamut from research of neuron cell cultures to Japanese youngsters’s paintings and from ongoing hearth security investigations, through SAFFIRE-VI, to ionospheric plasma physics.

On 11 August, Cygnus even pulled double obligation as an orbit-lifting spacecraft, firing its thrusters for 22 minutes and 48 seconds to spice up the ISS altitude by about 0.3 miles (0.5 kilometers) at its orbit’s excessive level (or “apogee”) and a couple of.8 miles (4.5 kilometers) at its low level (or “perigee”). The tip consequence nudged the area station barely greater to 258 miles (422 kilometers) x 262 miles (414 kilometers).

One in all Cygnus’ cymbal-shaped photo voltaic arrays is seen in opposition to an excellent Bahamas backdrop earlier this 12 months. Picture Credit score: NASA

Preparations for NG-19’s departure bought underway in October, when Expedition 70 crew members started packing unneeded {hardware} and trash aboard the cargo ship. Overseeing Thursday’s departure have been astronauts Jasmin Moghbeli and Satoshi Furukawa, who closed the hatches yesterday to definitively finish its lengthy mission. The SAFFIRE-VI experiments will occupy a sizeable chunk of Cygnus’ remaining time in orbit, with the spacecraft focused to carry out a harmful dive into Earth’s ambiance subsequent month.

It’ll mark the figurative return of Laurel Clark, a crew member on Columbia’s ill-fated remaining mission, greater than twenty years in the past. Honoring Clark continues a longstanding Cygnus custom, which has seen every consecutive cargo ship named for a determine who performed a considerable function in human area exploration.

Northrop Grumman Corp.’s NG-19 Cygnus was named in honor of STS-107 astronaut Laurel Clark. Picture Credit score: NASA

Prior honorees included Challenger’s Ellison Onizuka, Columbia’s Rick Husband and Kalpana “Okay.C.” Chawla, moonwalkers Gene Cernan, John Younger and Al Bean and Apollo 1’s Roger Chaffee. Added to that checklist are 5 different shuttle flyers, legendary “Authentic Seven” Mercury and Apollo-Soyuz Take a look at Challenge (ASTP) astronaut Deke Slayton, “Hidden Figures” mathematician Katherine Johnson, former NASA Deputy Administrator James “J.R.” Thompson and Manned Orbital Laboratory (MOL) astronaut selectee Robert Lawrence. Most lately, the NG-18 Cygnus—launched final November—supplied a nod to America’s first lady in area, astronaut Sally Experience.

Clark thus turns into the third STS-107 veteran to be honored with a Cygnus title. “We bonded over our shared Midwestern roots and fond connection to Scotland,” stated Clark’s former classmate, astronaut Dan Tani, now Northrop Grumman’s director of enterprise improvement. “I bear in mind, as a brand new mom herself, Laurel naturally took on a maternal function in our class, at all times searching for everybody else and ensuring we have been all doing effectively.”

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