Topic: [Discuss] Boeing Starliner Orbital Flight Test
Henry Heatherbank Member
Posts: 249 From: Adelaide, South Australia Registered: Apr 2005
posted 12-22-2019 11:40 PM
I saw some post-landing imagery of the ground crew placing an environmental protection “canopy “ (tent, really) over the spacecraft. Although that would be a standard measure in most landing scenarios, I wonder if the old heads from 1982 shudder at the thought of gypsum sand contamination, like what happened to STS 3 after the landing at WSMR. As the stories go, a massive clean up was required because of the contamination, and gypsum was still being found in the vehicle long after.
I wonder how this will be managed going forward if White Sands will be a regular landing zone??
issman1 Member
Posts: 1045 From: UK Registered: Apr 2005
posted 12-23-2019 07:10 AM
quote:Originally posted by SpaceAngel: Will there be any reconsideration of a possible re-flight of the Starliner in the near future
The OFT mission patch depicts Starliner approaching the ISS docking port. Now was this merely artistic license or a mission objective?
The only thing I gathered from both press conferences — immediately after the mishap and premature landing — was that it doesn't matter and that CFT will happen as planned.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 12-23-2019 08:04 AM
Both NASA and Boeing made it clear in the press conferences that no decision will be made about what happens next, whether it be the crew flight test or another orbital flight test, until the data from this flight is analyzed.
The patch was designed to reflect the nominal mission, which included visiting the space station. NASA did not require Boeing to dock, only show the ability to control the spacecraft during proximity maneuvers.
The flight was able to partially achieve this by establishing the communications link with the space station and demonstrating that its guidance and navigation tools, as well as part of its vision system, worked as designed.
denali414 Member
Posts: 642 From: Raleigh, NC Registered: Aug 2017
posted 12-23-2019 09:13 AM
Heard during the press conference yesterday, that the Starliner capsule is reusable up to 10 flights. Was "reusable" part of the contract with Boeing or SpaceX? And just curious how is it determined the amount of times a capsule that has never flown is reusable? Thanks!
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 12-23-2019 09:28 AM
NASA did not require the commercial crew spacecraft to be reusable. Boeing designed Starliner to be reusable and defined what inspections, tests and vehicle refurbishments will be needed for the capsule between flights. From a SpaceNews September 2018 article:
That desire to reuse the capsule drove Boeing's decision to land the spacecraft on land, at one of five selected locations in the western United States, rather than splashing down at sea. "For us, in our baseline, we need to land on land to support capsule reuse," he [John Mulholland, vice president and program manager for the commercial crew program at Boeing] said. Starliner does have the ability to splash down in an emergency, but "if we end up aborting and ditching into the ocean, then we wouldn't reuse that capsule."
The number of times a spacecraft can be flown is based on the loads on the vehicle during flight and the tolerances of its structural components.
posted 01-03-2020 03:15 PM
Any word on the effect, if any, the malfunction will have on the next flight?
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 01-03-2020 03:17 PM
According to Boeing, data analysis is expected to take at least all of January, if not longer, and until then, no decision (or news) will be made about the next mission.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 01-07-2020 03:09 PM
NASA today (Jan. 7) said:
NASA and Boeing are in the process of establishing a joint, independent investigation team to examine the primary issues associated with the company's uncrewed Orbital Flight Test. ... Once underway, the investigation is targeted to last about two months before the team delivers its final assessment.
In parallel, NASA is evaluating the data received during the mission to determine if another uncrewed demonstration is required. This decision is not expected for several weeks as teams take the necessary time for this review.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 01-15-2020 10:58 AM
Boeing video
Take a look inside the Starliner on its Orbital Flight Test. Four interior cameras captured the mission, and this video covers nearly every dynamic event during the flight, including launch, separation events, on-orbit maneuvering, re-entry and landing.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 01-29-2020 07:55 AM
Boeing is reserving funds to fly another uncrewed orbital flight test, should it be necessary. From the company's Defense, Space & Security division fourth quarter results:
Fourth-quarter operating margin decreased to 0.5 percent due to a $410 million pre-tax Commercial Crew charge primarily to provision for an additional uncrewed mission for the Commercial Crew program, performance and mix. NASA is evaluating the data received during the December 2019 mission to determine if another uncrewed mission is required.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 02-07-2020 06:40 PM
Boeing will reverify all the software on its CST-100 Starliner commercial crew spacecraft after an ongoing investigation found "numerous" problems in the original development process that allowed at least two major problems to escape detection, reports SpaceNews.
John Mulholland, vice president and program manager for the Starliner program at Boeing, said the Starliner software is intended to initialize its mission elapsed timer from the Atlas 5 launch vehicle, but only in the "terminal count" phase of the countdown. The software, he said, lacked that terminal count requirement. "So, it polled an incorrect mission elapsed time from the launch vehicle, which then gave us an 11-hour mismatch," he said.
The second problem, revealed Feb. 6 at a meeting of the Aerospace Safety Advisory Panel (ASAP), was a "valve mapping error" for the thrusters in the vehicle's service module. Those thrusters perform a "disposal burn" of the service module after separating from the crew module just before reentry.
Mulholland said the valves were configured for conditions in normal flight for that disposal burn, which, had it not been corrected, could have pushed the service module into the crew module. That could have caused the crew capsule to become unstable, requiring additional thruster firings to reorient itself, or have damaged the capsule's heat shield.
The second error was detected during the review of the spacecraft software on the ground after the timer problem took place. Mulholland said engineers found the thruster software issue late Dec. 21, with the corrected and reverified code uploaded to the spacecraft around 5 a.m. Eastern Dec. 22, or about three hours before the spacecraft landed at White Sands Missile Range in New Mexico.
Headshot Member
Posts: 889 From: Vancouver, WA, USA Registered: Feb 2012
posted 02-07-2020 10:22 PM
I sure hope that Boeing is going to re-verify the software for the SLS as well. Between the 737 Max fiasco and now Starliner, new Boeing software is somewhat suspect.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 02-26-2020 01:16 PM
Speaking to the Orlando Sentinel, members of NASA's safety advisory panel expanded on some of the testing decisions Boeing made that drew questions about whether Starliner was ready to fly.
Critically, the panel learned early this month that Boeing did not perform a full, end-to-end integrated test of Starliner in a Systems Integration Lab with ULA's Atlas V rocket. The test typically shows how all the software systems during each component of the mission would have responded with each other through every maneuver — and it could potentially have caught the issues Boeing later experienced in the mission.
"It's pretty exhaustive. You gotta do that," said Christopher Saindon, a former member who ended his tenure on the panel in mid-February. "That was somewhat surprising to us on the panel. There were certainly gaps in the test protocol."
...Boeing said it followed all of the testing procedures NASA required of it prior to the Starliner test flight. The agency gave Boeing the green light to proceed after a flight readiness review prior to the mission.
astro-nut Member
Posts: 970 From: Washington, IL Registered: Jan 2006
posted 03-03-2020 02:39 PM
Do we know when Boeing will fly the Starliner Orbital Flight Test 2?
I am guessing around May, June or July and then maybe Starliner Crew Flight Test around November/December?
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 03-03-2020 03:41 PM
No decision has been made (or at least made public) about whether a second orbital flight test will be needed. As such, no dates are known for either another OFT or the crew flight test.
NASA and Boeing will hold a media conference on Friday (March 6) to discuss to the results of their investigation into the OFT issues.
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 03-06-2020 11:45 AM
Speaking today (March 6) about whether another OFT mission would be needed, Doug Loverro, associate administrator for NASA's Human Exploration and Operations Mission Directorate, told reporters:
Quite frankly, right now, we do not know.
The findings and corrective actions that Boeing has laid out, they have to now come back to NASA with a plan how they are going to address all of those. That plan will have a schedule, it will have all of the technical aspects to it, all of the details of when and how they are going to go ahead and address them and then NASA will evaluate that plan. We will evaluate the results of their work. We will do our own inspection of the results of their work. And then we will be in a position to decide whether or not we need another test flight or not.
So we are still a ways away from that and I can't even tell you what the schedule is for making that decision because it is very dependent on what we see in Boeing's corrective action plan and the thoroughness that we believe that corrective action plan has been implemented.
The Boeing-NASA joint independent review team's report included 61 recommendations addressing the three primary issues identified during the OFT mission, which NASA and Boeing have both accepted.
Headshot Member
Posts: 889 From: Vancouver, WA, USA Registered: Feb 2012
posted 04-06-2020 06:31 PM
Were the 61 recommendations referenced above ever made public? If so, where?
Robert Pearlman Editor
Posts: 43534 From: Houston, TX Registered: Nov 1999
posted 04-06-2020 07:49 PM
NASA and Boeing have not released the full report of the independent review team. The 61 corrective and preventive actions have not been published as of yet.