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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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