Boeing's Starliner astronaut taxi is about to do a key test of its systems ahead of carrying humans. On Friday (July 30), the spacecraft will launch on an uncrewed mission and attempt to reach the International Space Station.
The mission, called Orbital Flight Test 2 (OFT-2), will be a crucial milestone for Boeing, which was unable to reach that destination with Starliner's first test flight in December 2019. After completing a thorough investigation in July 2020, Boeing and NASA implemented 80 "corrective actions" to prepare Starliner for a do-over of the OFT mission. If all goes well, NASA astronauts will soon begin flying astronauts to the space station for NASA.
Here's a complete guide to everything you need to know about the OFT-2 mission — including how to see the launch and all related live events online and in-person — and what this historic mission will mean for NASA and the commercial spaceflight industry.
Live updates: Follow Boeing's Starliner OFT-2 mission here
Related: How to watch Boeing launch its 2nd Starliner test flight for NASA
When, where and how to watch online
The Starliner mission, also known as Orbital Flight Test 2 (OFT-2), is scheduled to lift off at 2:53 p.m. EDT (1853 GMT) on Friday (July 30).
The timing of the launch may change due to technical, weather or other factors. Currently, the weather is predicted to be only 40% favorable for Starliner's instantaneous launch window on Saturday, according to a forecast issued Thursday (July 28) by the U.S. Space Force's 45th Weather Squadron.
If Saturday's launch attempt ends up being delayed, the next launch opportunity isn't until Tuesday (Aug. 3) at 1:20 p.m. EDT (1720 GMT), with a second backup window on Wednesday (Aug. 4) at 1:40 p.m. EDT (1740 GMT). Saturday, Sunday and Monday (July 31–Aug. 2) are off the table because of a scheduling conflict with a "classified operation" on the Eastern Range, Gary Wentz, vice president of government and commercial programs at ULA, said in a prelaunch news conference on Tuesday (July 27).
You can watch live coverage of the mission here at Space.com, courtesy of NASA Television, beginning at 2 p.m. EDT (1800 GMT). NASA's launch broadcast will begin with prelaunch activities and end after Starliner's orbital insertion; live coverage will resume when Starliner approaches the space station for docking about 24 hours after liftoff.
Starliner should reach its preliminary orbit about 31 minutes after liftoff. After the orbit insertion maneuver, the spacecraft will begin a 24-hour orbital chase to catch up with the International Space Station for rendezvous and docking on Saturday (July 31). Docking is scheduled for 3:06 p.m. EDT (1906 GMT) on Saturday.
About 18 hours after Starliner docks, the Expedition 65 astronauts onboard the space station will open the hatch and enter the Starliner vehicle for an inspection. The hatch opening is scheduled for approximately 9:35 a.m. EDT (1335 GMT) on Sunday (Aug. 1) — that, too, will stream live on NASA's channels and on Space.com.
Starliner will spend less than a week docked at the space station before returning to Earth for a parachute-assisted landing at White Sands Space Harbor in New Mexico as early as Aug. 5, if the mission launches on time this Friday.
Where will Starliner lift off?
Boeing will launch Starliner from Space Launch Complex 41 at Cape Canaveral Space Force Station in Florida, a busy launch port situated near NASA's Kennedy Space Center. The launch area is about an hour east of Orlando adjacent to the Atlantic coast, providing for a safe region for rocket stage drops and overall launch activities.
Cape Canaveral Space Force Station is one of the United States' first launch sites and had its name officially changed from Cape Canaveral Air Force Station in late 2020.
This is the same facility from which the first U.S. satellite, Explorer 1, launched in 1958 and where some of the first American astronauts launched for space and Earth orbit. Numerous uncrewed planetary probes have also departed Cape Canaveral over the decades, with some reaching into interstellar space.
How to see the launch in person
Planning to watch the launch in person? Due to the ongoing COVID-19 pandemic, NASA is limiting facility access to the public and only some media will be there in person. Spectators wishing to view the launch from the nearby NASA Kennedy Space Center must purchase tickets online in advance.
Viewers along the eastern seaboard of the United States may be able to catch a glimpse of the rocket soaring through the sky, weather and daylight permitting. However, because the launch is several hours before sunset, it may be difficult to observe.
What's on board?
While Starliner will be uncrewed for the OFT-2 mission, the commander's seat will have a passenger: Rosie the Rocketeer, Boeing's anthropometric test device. Rosie also flew to space briefly during the first Starliner mission in December 2019 and was equipped with 15 sensors to evaluate the stresses of spaceflight on the human body. But for OFT-2, the "dummy" won't be collecting any more data.
"Rosie's there, but she is essentially a ballast," John Vollmer, vice president and program manager of Boeing's commercial crew program, said in Tuesday's prelaunch briefing. "We are taking measurements — we've put sensors in the seats and other locations in the vehicle, as we found that we thought that would be more valuable since we'd gotten the data from Rosie on the first flight."
Much of Starliner's cargo will be simple supplies and equipment for the Expedition 65 crew aboard the International Space Station. Starliner will bring more than 400 pounds (180 kilograms) to the orbiting laboratory, and upon departure the spacecraft will return to Earth with more than 550 lbs. (250 kg) of cargo, according to NASA.
Starliner will also fly commemorative things. OFT-2 will include 14 banners from historically Black colleges and universities (HBCUs), Silver Snoopy pins (traditionally given to NASA astronauts who directly contribute to human spaceflight success) and Rosie the Riveter commemorative coins to honor the nearly 19 million American women who contributed to the aerospace industry during the Second World War.
Other items aboard the spacecraft include American flags and an ID card signed and used by Boeing's founder, Bill Boeing, to travel the U.S. by air. The same card also flew onboard OFT-1.
Read more: HBCU flags and 'Rosie' coins among Boeing Starliner OFT-2 cargo
What is Starliner's mission?
The overall goal of Starliner's OFT-2 mission is to rocket a spacecraft to the International Space Station, dock with it to exchange supplies and equipment, and execute a safe splashdown in the Atlantic Ocean. This is an uncrewed test mission to ensure that the key milestones of an astronaut flight are possible so that Starliner can be certified to carry astronaut crews.
In 2014, both Boeing and SpaceX received commercial crew development contracts from NASA, together valued at $6.8 billion, to bring astronauts to space as a replacement for the space shuttle vehicle that retired in 2011. In the interim, Russia's Soyuz spacecraft brought all NASA astronauts to the ISS.
SpaceX's Crew Dragon began operational flights with astronauts in 2020, reducing NASA's need to use Soyuz spacecraft. However, Boeing encountered technical problems that have delayed Starliner human flights. During Starliner's last test attempt in December 2019, the spacecraft experienced a series of glitches that stranded the vehicle in the wrong orbit to reach the International Space Station.
The spacecraft splashed down safely after its failed attempt to reach the ISS, and since then NASA and Boeing have been working together to fix dozens of issues identified during the 2019 flight.
Media reports suggest that if Boeing's OFT-2 passes its flight certification, the company may fly astronauts on a crewed test flight in late 2021. (NASA and Boeing officials declined to give a more specific timeframe for the first crewed mission during an OFT-2 prelaunch news briefing on July 27.)
OFT-2 mission timeline & flight profile
Should the schedule hold, Starliner will blast off aboard a United Launch Alliance Atlas V rocket at 2:53 p.m. EDT (1853 GMT) on Friday (July 30) from Space Launch Complex-41 on Cape Canaveral Space Force Station in Florida.
The spacecraft will reach its preliminary orbit roughly 31 minutes later, and then get ready to dock with the International Space Station. So far, the docking is scheduled for 3:06 p.m. EDT (1706 GMT) on Saturday (July 31), which is roughly 24 hours after its launch.
NASA says the spacecraft will remain docked to the ISS for about five to 10 days before coming back to Earth. Starliner will attempt to land at White Sands Space Harbor in New Mexico on the same day that it undocks from the space station. Through the whole process, Boeing and NASA will be assessing and testing the spacecraft's performance to try to certify the spacecraft to ferry astronauts.
Some of the things NASA wants to see are the successful in-orbit operation of all major spacecraft systems, good performance of guidance, navigation and control systems through launch, orbit and re-entry, and safe acoustic and vibration levels for astronauts. Starliner will also have to meet all its basic mission requirements of launching, docking and landing to a degree that is operational and safe for astronauts.
What's next?
NASA pledges to put astronauts on board Starliner for a crewed test flight in 2021, as long as OFT-2 meets its objectives. "NASA and Boeing will look for opportunities toward the end of this year to fly Starliner's first crewed mission to the space station," the agency said in a recent statement.
That mission, called Crew Flight Test, will go to space with veteran NASA astronauts Barry "Butch" Wilmore, Nicole Mann and Mike Fincke. The agency says that the crew will remain in space for "several months," but didn't specify if that would be a normal six-month rotation. Sometimes the schedule is adjusted for operational reasons, and as a comparison point, SpaceX's first crewed test flight in 2020, Demo-2, was about two months long.
Crew Flight Test will need to pass its major milestones to allow Starliner to get full certification to haul astronaut crews to space regularly. Once that happens, NASA will have two commercial crew vehicles to use (Starliner and Crew Dragon) for all its astronaut flights.
Even when the two commercial crew vehicles are operational, NASA still may use Russian Soyuz seats on occasion. The agency has pledged to put Russian cosmonauts aboard American commercial crew vehicles in exchange for Soyuz seats for NASA astronauts, but that arrangement may be delayed until 2022.
Follow Elizabeth Howell on Twitter @howellspace. Follow us on Twitter @Spacedotcom and on Facebook.
Science - Latest - Google News
July 29, 2021 at 06:00PM
https://ift.tt/3BRKZaF
Boeing's Starliner OFT-2 mission to the International Space Station: When to watch and what to know - Space.com
Science - Latest - Google News
https://ift.tt/2Kb7H4e
https://ift.tt/3ceUkwc
Bagikan Berita Ini
0 Response to "Boeing's Starliner OFT-2 mission to the International Space Station: When to watch and what to know - Space.com"
Post a Comment