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For SpaceNut .... that is awesome.... Post #325 and link to calculator
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(th)
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Using LEO speed as a basis, did you notice the 20% gravity loss for the first stage because is launch T/W was under 1.2? I was startled to see only a 0.5% drag loss, but then, with the low T/W ratios, it really wasn't moving very fast when it left the sensible atmosphere at 1st stage stage-off. Somehow, that calculator is using dimensions and T/W ratios to estimate those losses. It didn't say how those were estimated.
GW
GW Johnson
McGregor, Texas
"There is nothing as expensive as a dead crew, especially one dead from a bad management decision"
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Today is Google Meeting day for NewMars...
GW Johnson will try to attend.
kbd512 may be busy.
All are welcome. The hours are on the late side for our European members. We can schedule earlier if there is ever a request.
Meantime, we'll open the waiting room a bit before midnight UTC, 7 PM Houston, 8 PM New Hampshire
(th)
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Starship Launch broadcast shows countdown is on hold at 12 minutes
I'm not seeing much on the broadcast... Maybe that time is 12 hours 00 minutes 00 seconds
The waiting room is open...
kdb512 was in fine form this evening...
We dove into two topics: The new SeaGlider transportation system in test in the US, and polysilicon.
We also spent a little bit of time looking at recent drawings created by GW Johnson to explain various aspects of rocket design.
(th)
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tahanson43206,
My web browser crashed.
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Sorry, I got distracted doing unexpected chores outside until the sun went down, then I had to get the chicken and the cat "in" for the night. By that time, the meeting start was an hour and a half earlier.
GW
GW Johnson
McGregor, Texas
"There is nothing as expensive as a dead crew, especially one dead from a bad management decision"
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Today is Google Meeting Day for NewMars!
It will be mid-morning in Australia, so it might be convenient for folks there to stop by.
The waiting room will open at midnight UTC as usual: 7 PM Houston and 8 PM New Hampshire
If GW Johnson is able to attend, we may have the opportunity to see XYTRAJ run on his computer, using the Dot NET 8.0 library.
In addition, we have a new image store capability that GW might be able to use to store images for display on the NewMars forum.
Other topics will come up, and if kbd512 is able to attend, we may be able to take a deep dive into a technical subject using the Share feature of Google meeting.
Reminder for SpaceNut ... we have a request to reset banned membership to the new Inactive on the table.
(th)
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Systems test at 18:42 New Hampshire time went well.
The waiting room is scheduled to open a few minutes before midnight UTC
Use the link in Post 1 of this topic to join the meeting.
It would be midmorning in Australia on Monday, in case anyone there has a moment to stop by.
Update: GW Johnson has successfully posted his first image to the NewMars Test Site!
The waiting room will be opening shortly. Update at 23:52:33
https://airandspace.si.edu/collection-o … ad%20three
(th)
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tahanson43206,
Here's a link that shows the "belly-to-belly" MUSTARD spaceplane concept that uses 3 roughly identical spacecraft, 1 of which would ascend all the way to orbit:
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