#1
|
|||
|
|||
Commercial Crew
NASA has reportedly updated its launch dates for Commercial Crew
missions. The Starliner unmanned orbital test is now manifested for September (the original holdup was apparently largely due to launch vehicle availability). Both Starliner and Crew Dragon are currently manifested for manned flights in November (Crew Dragon first), which would seem to imply that the Crew Dragon Max Q Abort Test would happen sometime before that, although we still have no date for that and no new information on what caused the test pad anomaly. -- "The reasonable man adapts himself to the world; the unreasonable man persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man." --George Bernard Shaw |
#2
|
|||
|
|||
Commercial Crew
On Jun/24/2019 at 03:46, Fred J. McCall wrote :
NASA has reportedly updated its launch dates for Commercial Crew missions. The Starliner unmanned orbital test is now manifested for September (the original holdup was apparently largely due to launch vehicle availability). Both Starliner and Crew Dragon are currently manifested for manned flights in November (Crew Dragon first), which would seem to imply that the Crew Dragon Max Q Abort Test would happen sometime before that, although we still have no date for that and no new information on what caused the test pad anomaly. Thanks for the info. Do you have a cite for where you got that? Alain Fournier |
#3
|
|||
|
|||
Commercial Crew
Alain Fournier wrote on Mon, 24 Jun 2019
11:51:05 -0400: On Jun/24/2019 at 03:46, Fred J. McCall wrote : NASA has reportedly updated its launch dates for Commercial Crew missions. The Starliner unmanned orbital test is now manifested for September (the original holdup was apparently largely due to launch vehicle availability). Both Starliner and Crew Dragon are currently manifested for manned flights in November (Crew Dragon first), which would seem to imply that the Crew Dragon Max Q Abort Test would happen sometime before that, although we still have no date for that and no new information on what caused the test pad anomaly. Thanks for the info. Do you have a cite for where you got that? The latest Ars Technica Rocket Report, which gave NASASpaceFlight.com as their source. https://www.nasaspaceflight.com/2019...-launch-dates/ -- "The reasonable man adapts himself to the world; the unreasonable man persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man." --George Bernard Shaw |
#4
|
|||
|
|||
Commercial Crew
On 6/24/2019 3:46 AM, Fred J. McCall wrote:
NASA has reportedly updated its launch dates for Commercial Crew missions. The Starliner unmanned orbital test is now manifested for September (the original holdup was apparently largely due to launch vehicle availability). Both Starliner and Crew Dragon are currently manifested for manned flights in November (Crew Dragon first), which would seem to imply that the Crew Dragon Max Q Abort Test would happen sometime before that, although we still have no date for that and no new information on what caused the test pad anomaly. I am skeptical of the Crew Dragon dates until I hear more about results of the accident investigation, remediation steps, NASA buy-in and sign-off etc. Seems to me SpaceX has an uphill climb. It wouldn't surprise me if Starliner goes first in both at this point. Dave |
#5
|
|||
|
|||
Commercial Crew
David Spain wrote on Tue, 25 Jun 2019 08:45:30
-0400: On 6/24/2019 3:46 AM, Fred J. McCall wrote: NASA has reportedly updated its launch dates for Commercial Crew missions. The Starliner unmanned orbital test is now manifested for September (the original holdup was apparently largely due to launch vehicle availability). Both Starliner and Crew Dragon are currently manifested for manned flights in November (Crew Dragon first), which would seem to imply that the Crew Dragon Max Q Abort Test would happen sometime before that, although we still have no date for that and no new information on what caused the test pad anomaly. I am skeptical of the Crew Dragon dates until I hear more about results of the accident investigation, remediation steps, NASA buy-in and sign-off etc. Seems to me SpaceX has an uphill climb. It wouldn't surprise me if Starliner goes first in both at this point. Gonna take some time travel for Starliner to go first on the unmanned orbital test, since Crew Dragon did that months ago. -- "The reasonable man adapts himself to the world; the unreasonable man persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man." --George Bernard Shaw |
#6
|
|||
|
|||
Commercial Crew
On 6/25/2019 9:42 AM, Fred J. McCall wrote:
Gonna take some time travel for Starliner to go first on the unmanned orbital test, since Crew Dragon did that months ago. Sorry should have read that more closely. Yes that's right. Dave |
#7
|
|||
|
|||
Commercial Crew
"JF Mezei" wrote in message ...
Dragon had a failure in a critical system which prevents the test of this critical system (abort in flight). Starliner hasn't had any failures because it is behind and hasn't even had unmanned test. Assuming SpaceX has found the cause and knows how to fix it, Dragon could be back in business and still be quite ahead. SpaceX appears have a new policy of not letting Musk say much, so I don't know that one can derive a conclusion from lack of news. When Boeing starts its tests, it could work flawlessly or not. We have to wait. Will they also have a max-Q abort test? That would seem to require at least 2 test flights right? I have not seen a max-Q abort test for Starliner planned. I may have missed it, but I don't think so. I think NASA is still treating Boeing as "they've done this before, we can trust them a bit more." And perhaps after the recent SpaceX explosion, they might be right. -- Greg D. Moore http://greenmountainsoftware.wordpress.com/ CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net IT Disaster Response - https://www.amazon.com/Disaster-Resp...dp/1484221834/ |
#8
|
|||
|
|||
Commercial Crew
"David Spain" wrote in message ...
On 6/24/2019 3:46 AM, Fred J. McCall wrote: NASA has reportedly updated its launch dates for Commercial Crew missions. The Starliner unmanned orbital test is now manifested for September (the original holdup was apparently largely due to launch vehicle availability). Both Starliner and Crew Dragon are currently manifested for manned flights in November (Crew Dragon first), which would seem to imply that the Crew Dragon Max Q Abort Test would happen sometime before that, although we still have no date for that and no new information on what caused the test pad anomaly. I am skeptical of the Crew Dragon dates until I hear more about results of the accident investigation, remediation steps, NASA buy-in and sign-off etc. Seems to me SpaceX has an uphill climb. It wouldn't surprise me if Starliner goes first in both at this point. I think a LOT depends on what the result of the Crew Dragon failure analysis comes down to. And in their defense, they've at least flown actual hardware. Starliner still hasn't. And given the costs and launch vehicle availability, SpaceX can afford to do more testing, sooner if they have to. s Dave -- Greg D. Moore http://greenmountainsoftware.wordpress.com/ CEO QuiCR: Quick, Crowdsourced Responses. http://www.quicr.net IT Disaster Response - https://www.amazon.com/Disaster-Resp...dp/1484221834/ |
#9
|
|||
|
|||
Commercial Crew
JF Mezei wrote on Tue, 25 Jun 2019
12:59:24 -0400: Dragon had a failure in a critical system which prevents the test of this critical system (abort in flight). Thank you, Captain Obvious. Starliner hasn't had any failures because it is behind and hasn't even had unmanned test. Not true. In point of fact, Starliner had a long hiatus in testing because a ground test of their abort motor had an anomaly that required some redesign. Assuming SpaceX has found the cause and knows how to fix it, Dragon could be back in business and still be quite ahead. I don't think you can make that assumption. SpaceX appears have a new policy of not letting Musk say much, so I don't know that one can derive a conclusion from lack of news. Evidence for this "new policy"? I think in this case a lack of statements says exactly what it seems to say; they don't have a definitive answer yet. When Boeing starts its tests, it could work flawlessly or not. We have to wait. Will they also have a max-Q abort test? That would seem to require at least 2 test flights right? From what I can tell, Boeing doesn't plan a Max-Q abort test. Instead, it looks like they're going to 'certify' based on ground testing of 'flight-like' test articles. I'm also not sure that a Max-Q test is required prior to experimental manned flight. It's only required to demonstrate the "full envelope abort" capability required by the contract prior to first 'operational' flight. -- "Insisting on perfect safety is for people who don't have the balls to live in the real world." -- Mary Shafer, NASA Dryden |
#10
|
|||
|
|||
Commercial Crew
"Greg \(Strider\) Moore" wrote on Tue,
25 Jun 2019 15:51:12 -0400: "JF Mezei" wrote in message ... Dragon had a failure in a critical system which prevents the test of this critical system (abort in flight). Starliner hasn't had any failures because it is behind and hasn't even had unmanned test. Assuming SpaceX has found the cause and knows how to fix it, Dragon could be back in business and still be quite ahead. SpaceX appears have a new policy of not letting Musk say much, so I don't know that one can derive a conclusion from lack of news. When Boeing starts its tests, it could work flawlessly or not. We have to wait. Will they also have a max-Q abort test? That would seem to require at least 2 test flights right? I have not seen a max-Q abort test for Starliner planned. I may have missed it, but I don't think so. I think NASA is still treating Boeing as "they've done this before, we can trust them a bit more." And perhaps after the recent SpaceX explosion, they might be right. I tend to put it more down to relative cost of the two boosters. I suspect it was SpaceX's choice to do a 'live test' for a Max-Q abort. -- "Insisting on perfect safety is for people who don't have the balls to live in the real world." -- Mary Shafer, NASA Dryden |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Bought Senators claim 'commercial crew sucks' | Anonymous[_14_] | Policy | 7 | March 14th 12 12:19 AM |
Commercial Crew: The Perception Problem | Matt Wiser[_2_] | History | 9 | September 29th 10 01:06 PM |
Commercial Crew Flight by 2015? | Space Cadet[_1_] | Policy | 2 | May 14th 10 11:54 PM |
Commercial launch of cargo but not crew | [email protected] | Space Station | 1 | August 15th 09 09:40 AM |
NASA ESTABLISHES COMMERCIAL CREW/CARGO PROJECT OFFICE | Jacques van Oene | Space Shuttle | 4 | November 9th 05 06:58 PM |