SPACE
Boeing Starliner crew enters space station after docking
Boeing Starliner's first astronaut crew welcomed aboard space station
By Joey Roulette and Steve Gorman
(Reuters) -Boeing's new Starliner capsule and an inaugural two-member NASA crew safely docked with the International Space Station on Thursday, meeting a key test in proving the vessel's flight-worthiness and sharpening Boeing's competition with Elon Musk's SpaceX.
The rendezvous was achieved despite an earlier loss of several guidance-control jet thrusters, some of them due to a helium propulsion leak, which NASA and Boeing said should not compromise the mission.
The CST-100 Starliner, with veteran astronauts Barry "Butch" Wilmore and Sunita "Suni" Williams aboard, arrived at the orbiting platform after a flight of nearly 27 hours following its launch from Cape Canaveral Space Force Station in Florida.
The reusable, gumdrop-shaped capsule, dubbed "Calypso" by its crew, was lofted into space on Wednesday atop an Atlas V rocket furnished and flown by Boeing-Lockheed Martin's United Launch Alliance joint venture.
It autonomously docked with the ISS while both were orbiting some 250 miles (400 km) over the southern Indian Ocean at 1:34 p.m. EDT (1734 GMT), as the two vehicles soared around the globe in tandem at about 17,500 miles (28,160 km) per hour.
The spacecraft's final approach to the ISS and docking, following a brief interval when Wilmore manually controlled the capsule, was shown on a NASA webcast.
"Nice to be attached to the big city in the sky," Wilmore radioed to mission control in Houston shortly after docking.
On arrival, Wilmore, 58, and Williams, 61, spent about two hours conducting a series of standard procedures, such as checking for airlock leaks and pressurizing the passage between the capsule and the ISS, before opening the entry hatches.
A live NASA video feed showed the smiling new arrivals, wearing their blue flight suits, weightlessly floating headfirst through the padded passageway, one after the other, into the station. Williams was first.
"We're just as happy as can be to be up in space," she said during a brief welcoming ceremony a short time later.
They were greeted warmly with hugs and handshakes by the outpost's current seven resident crew members: four fellow U.S. astronauts and three Russian cosmonauts.
Reuters
Boeing's new Starliner docks at the ISS
Astronauts welcome Starliner crew to the ISS
Duration 0:44 View on Watch
Plans call for Wilmore and Williams to remain aboard the station for about eight days, then depart on a return flight that will take Starliner on a fiery reentry back through Earth's atmosphere and end with a parachute and airbag-assisted landing in the U.S. Desert Southwest, a first for a crewed NASA mission.
Thursday was a busy day for the U.S. space program, as SpaceX's next-generation Starship rocket survived a fiery, hypersonic return from space and achieved a breakthrough landing demonstration in the Indian Ocean in its fourth test flight.
On Starliner's voyage to the ISS, helium leaks were detected in its propulsion system, knocking out some of the 28 thrusters used by the capsule to make precision maneuvers in space. However, the spacecraft still had enough functioning thrusters to compensate for the loss, according to NASA and Boeing. An additional thruster was disabled by mission control just before final approach.
YEARS OF TECHNICAL PROBLEMS
The Starliner launch on Wednesday followed years of technical problems, various delays and a first successful 2022 test mission to the orbital laboratory without astronauts aboard.
Last-minute glitches had nixed the Starliner's first two crewed launch attempts, including a helium leak found on the capsule's propulsion system that officials later determined was not serious enough to warrant a mechanical fix.
NASA and Boeing officials at the time pointed to a faulty seal on a thruster component that was failing to keep the helium inside.
Boeing built Starliner under contract with NASA to compete with SpaceX's Crew Dragon capsule, which since 2020 has been the U.S. space agency's only vehicle for sending ISS crew members to orbit from American soil. The current mission marks Starliner's first test flight with astronauts aboard, a requirement before NASA can certify the capsule for routine astronaut missions.
Selected as crew for the pivotal flight were two NASA veterans who have previously logged 500 days in space between them: Wilmore, 61, a retired Navy captain and fighter pilot, and Williams, 58, a former Navy helicopter test pilot with experience flying more than 30 different aircraft.
Getting Starliner to this point has been a fraught process for Boeing under its $4.2 billion, fixed-priced contract with NASA, which wants the redundancy of two different U.S. rides to the ISS.
The Starliner is several years behind schedule and more than $1.5 billion over budget. Meanwhile, Boeing's commercial airplane manufacturing operations have been rocked by a series of crises involving its 737 MAX jetliners.
(Reporting by Joey Roulette in Washington and Steve Gorman in Los Angeles; Editing by Will Dunham and Jonathan Oatis)
Boeing's astronaut capsule arrives at the space station after thruster trouble
Marcia Dunn
The Associated Press
Updated June 6, 2024
CAPE CANAVERAL, FLA. -
Boeing’s new capsule arrived at the International Space Station on Thursday, delayed by last-minute thruster trouble that almost derailed the docking for this first test flight with astronauts.
The 260-mile-high (420-kilometre-high) linkup over the Indian Ocean culminated more than a day of continuing drama for Boeing’s astronaut flight debut carrying NASA test pilots Butch Wilmore and Suni Williams
“Nice to be attached to the big city in the sky,” Wilmore said once the hooks between the two spacecraft were tight.
Williams entered the space station first, dancing on the way in to music. Wilmore followed, snapping his fingers. They embraced the seven space station residents.
“It was such a great welcome, a little dance party,” said Williams. “That’s the way to get things going.”
The Starliner capsule already had one small helium leak when it rocketed into orbit with two NASA astronauts Wednesday. Boeing and NASA managers were confident they could manage the propulsion system despite the problem and that more leaks were unlikely. But just hours into the flight, two more leaks cropped up and another was discovered after docking.
Later, five of the capsule's 28 thrusters went down. The astronauts managed to restart four of them, providing enough safety margin to proceed. By then, Starliner had passed up the first docking opportunity and circled the world for an extra hour alongside the station before moving in.
The thrusters problems were unrelated to the helium leaks, NASA’s commercial crew program manager Steve Stich said after the docking.
Going forward in the flight, “we have some tools in our tool kit to manage this,” Stich said.
Earlier in the day, before the thrusters malfunctioned, officials stressed that the helium leaks posed no safety issues for the astronauts or the mission.
Helium is used to pressurize the fuel lines of Starliner’s thrusters, which are essential for maneuvering. Before liftoff, engineers devised a plan to work around any additional leaks in the system. A faulty rubber seal, no bigger than a shirt button, is believed responsible for the original leak.
Boeing program manager Mark Nappi said there should be plenty of helium in reserve for the trip home.
After the space shuttles retired, NASA hired Boeing and SpaceX to ferry astronauts to and from the space station. SpaceX’s taxi service began in 2020. Boeing was supposed to start around the same time, but was held up for years by safety concerns and other troubles.
Stich said none of the problems so far would require a repeat of an astronaut test flight before certifying the capsule for regular use.
No comments:
Post a Comment