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For SpaceNut ... thanks for the reminder that we have an entire Category (or Forum?) devoted to MDRS. I created the new topic because I did not find a topic with MDRS included. Apparently the search does not operate at the Category or Forum level.
Interesting!
For SpaceNut re 3D printing ... https://newmars.com/forums/viewtopic.ph … 88#p233988
Your points about materials used for rocket components are helpful. I wonder if anything similar is done with 3D printed metal rockets. I understand that Rocket Labs is using 3D printed rocket engines, and other companies may be experimenting the the technology. An entire engine might be subjected to heat treatment after the 3D printing is complete. This is an opportunity for us to add knowledge to the forum, if anyone has the time to investigate and report back.
For SpaceNut re note to offtherock about the new file storage system. https://newmars.com/forums/viewtopic.ph … 89#p233989
As a reminder, you too have the ability to store documents in phpBB3 and to link them to this forum. You've linked so many images over the years, you sure don't seem to need another storage location, but if you want to use it you are welcome. The detail offtherock and I are discussing is how to allow the images to appear on our NewMars site as actual images, instead of links. At present, I am limited to showing links, because the phpBB3 system was not designed to allow 3rd party access to image files. According to Gemini, it appears that a file called htaccess can be adjusted in the phpBB3 system to allow calls from our NewMars.com/forums to access the original image files.
For SpaceNut re post about Starship....https://newmars.com/forums/viewtopic.php?pid=233990#p233990
Your observations about the burnt-to-a-crisp look of the Starship just before "landing" reminder me of something we haven't seen discussed before. Those ships are going to stink when they land on drone ship or on-land towers.
Passengers will want to enter airtight corridors to avoid become aromatic with burnt-heatshield vapors.
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For the record, here are the NewMars members currently set up to log into the phpBB3 NewMars test site.
The test site is able to accept images for display on the NewMars site via link.
SpaceNut
GW Johnson
RobertDyck
Calliban
The login address is: http://40.75.112.55/phpBB3/ucp.php?mode … =index.php
The password is whatever you set when you opened the account. Most likely it is the same as you use on NewMars.
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I just wrote a detailed procedure for saving an image file on the phpBB3 test site.
Procedure to post an image on NewMars phpBB3 test site:
Here is the link to log in: http://40.75.112.55/phpBB3/ucp.php?mode=login
When you click that link, you should see Login
Below that should be Username
Below that should be Password
If those fields appear, just enter your user name exactly as you do for NewMars.
Enter the same password.
After you submit those values, you should be logged in.
In my case, when I logged in just now, Active Topics appeared.
If Active Topics does NOT appear, look at the upper left for "Quick Links" and click Active Topics
There should be three Active Topics. One is Images for FluxBB. Click on that.
The topic should appear. Click on Post Reply (printed in red below "Images for FluxBB"
Here is where the new procedure comes in:
Look under the edit window... You should see a tab that says "Attachments" Click that...
Click [Add files] (or you can just drag an image into the window)
For this demonstration I chose thrust coefficient forms from my collection of images
Click [Open] in the upper right corner
Here is the tricky part... look below the Attachments tab... you should see your image listed in a box under FILENAME
To the right of the name of your file should be a button that says [Place inline] Click that
Now you should see some text in the edit window. Click [Submit] below the edit window.
Your image should appear!
Now you are on the home stretch, but I'll save that for this evening's meeting.
Please let me know if this step-by-step procedure helps. I would print it if I were doing this for the first time.
I am looking at "primitive variable thrust equation for rockets:"
If anyone tries this and either succeeds or hits a snag, please report here.
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I just check the list of Banned and these are the unconverted accounts that remain. such as username Ufo_man is now testun1 as I need to find where it was left off at.
I was first removed from the banned list then the username was updated in the profile and set to inactive.
The old account shows 3 posts and while can set the post counter to 0 we might delete topics if they hold the first post if not removed so that the remaining discusion stays.
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For SpaceNut .... thanks for your post #3829 about converting accounts from banned to inactive.
Please hold off on manually doing that work. If kbd512 can find the time, he can perform an MySQL command to make that change in a few seconds.
Let's see if kbd512 had time to look at that last week. He's been extremely busy with family and work so may not have had time.
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The usernames TestID* are not in the banned and the last id created is TestID18375.
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For SpaceNut ... re #3831 ...
kbd512 has been extremely busy in recent times, so our request to reset the member status from banned to inactive has been a lower priority. However, kbd512 will try to slot some time for the request. Please continue holding off on the manual procedure for a bit longer.
In other news... thanks (again) for the hint about how FluxBB might have been able to host images at one time. That hint was enough to inspire an investigation to see if our phpBB3 Test site might be able to store images, and indeed, it turns out the site can!! Yesterday we saw the first instance of GW Johnson completing the (non-trivial) sequence of steps needed to deliver an image to Void.
That image may be of interest to others as well. It shows a summary of various trajectories for rockets.
I'll continue investigating to see if we might be able to deliver images directly, but this link method is clearly working. I am glad to see the phpBB3 Test site coming into active use.
In the long run, I would like to see this capability added to the FluxBB site, with suitable safeguards to keep computer virus out of the contributions.
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For the record, here are the NewMars members currently set up to log into the phpBB3 NewMars test site.
The test site is able to accept images for display on the NewMars site via link.
SpaceNut
GW Johnson
RobertDyck
CallibanThe login address is: http://40.75.112.55/phpBB3/ucp.php?mode … =index.php
The password is whatever you set when you opened the account. Most likely it is the same as you use on NewMars.
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I have forgotten my account password from so long ago and the email option did not seem to function.
Then again its been over a year since I was last able to get on a real computer.
Currently I am using the laptop. Send to my email if you would.
Thank
You
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For SpaceNut re login to NewMars test system.
Thanks for letting me know of the problem.
I'll reset your password and send the new password to you via email.
I regret that the email subsystem does not work, but I never learned how to set that up.
Update ... the password is changed. I'll send the new value to your email shortly.
Later update re http://newmars.com/forums/viewtopic.php … 37#p234037
SpaceNut .... you can ask the AI to format in BBCode! I've had some success with that. You do have to tell the AI that our forum has a limited sub set of BBCode to work with. For example 'h' is used for header to give large font, but there are no parameters. Also, if you use header, color has to be inside.
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for SpaceNut ...
For the record, here is your login history at the NewMars test site:
Thu Apr 11, 2024 12:07 am Sun May 26, 2024 10:59 pm
It's amazing to me that we were working on the FluxBB upgrade so long ago.
Thanks again for your support during that challenging time.
This is a good time to thank kbd512 for his skillful handling of the Webmaster duties that allowed the new software to flow smoothly into the Mars Society web site.
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Recruiting High Value members for NewMars.com/forums, in association with the Mars Society
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The Potholes Scan from 233001 to 234000 completed without incident.
Average time per post was 29 seconds. The Internet was (apparently) smooth as glass.
Details shortly.
7 potholes showed up:
233242
233243
233264
233292
233561
233856
233888
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For SpaceNut ... I just created a new topic for members to work on the "Three Sisters" triplet launcher that turns out to have been studied in considerable detail in the 1960's, when Shuttle was under consideration.
If you can find some images to decorate the new topic, that would help our readers to understand the idea and how it might be reconsidered today in light of new materials and decades of experience.
https://newmars.com/forums/viewtopic.ph … 51#p234051
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For SpaceNut ....
GW Johnson just wrote an email about the work he is doing to try to design various kinds of rocket systems.
In thinking about the space plane triple-launch concept, he wrote this:
Possibly a realistic inert fraction might be that of the X-37B, if we can find the data. Or Dreamchaser. Or both. The X-20 would be too old a technology. So would the X-15.
If you have some time, please see if you can find information about either of the modern space planes. The X-37B is actually flying (of course) and Dream Chaser is in testing to meet NASA requirements.
it may not be possible to find figures for a classified USAF program, and it may not be possible to find figures for a proprietary space plane design.
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Not only able to log in but here is the link to what my house looked like in late november 2024
http://40.75.112.55/phpBB3/download/file.php?id=11
create this topic How to create an image attachment
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here is the end of feb 2025
http://40.75.112.55/phpBB3/download/file.php?id=12
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For SpaceNut re Post #3840
First, congratulations on mastering the new file save and show image feature of the NewMars test site!
Second, thanks for this impressive image of the house wrapped in Tyvek! It will be fun to see the transformation as you have time to upload images! We have plenty of room in the Azure site, so we may be lucky enough to see more of the many improvements you made and are planning.
Third, regarding the image GW shows us of the landing Starship, I was intrigued by your uncertainty about the side you were looking at.
As a submariner, you will recognize the terms Port and Starboard. That image shows the keel with plenty of burn sites, and the Port side of the ship.
That said, if Elon and company had another camera on station in the Indian ocean, we may get to see the Starboard side.
I think we are lucky to have ** one ** drone on station. That was a precision landing!
My only question is why they didn't just hover until the fuel burned out. Then the ship might have floated instead of exploding. But perhaps the steam from the extremely hot engines would have blown the ship apart anyway.
Update... I didn't realize you'd uploaded the earlier image of the house with the walls gone entirely.!! Wow!! What a project!
Still, it looks as though you're making progress. The boys must be on site in the mobile these days! I trust they've been able to help a little but, when they can.
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For SpaceNut re images showing views on NewMars test site...
The images stored in the phpBB3 site are being viewed.
I was surprised to see that the forum software counts views of images.
http://40.75.112.55/phpBB3/viewtopic.php?t=31
If you look at the bottom of the image at the link above, you will see the count of views as of that moment.
I assume that there are at least 3 categories of viewers...
Spammers would be the bulk of the viewers.
Web crawlers would be another.
Our members and visitors to our forum would be the third.
Unfortunately, there is no way to tell which is which.
As of this post the count of views is 61.
Sure enough! The count increased to 62 when I went back to look again.
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For SpaceNut re heat shield tiles in post https://newmars.com/forums/viewtopic.ph … 21#p234121
I'm interested in your assessment of how well the tiles held up.
From what I could see, the tiles that were not removed before the flight held up pretty well.
I think that ship could have refueled and flown back to Texas, if it had landed on a barge.
The tiles that were removed prior to launch could have been replaced on the barge.
Red paint on the exterior of the heat shield towels doesn't mean much from my point of view, except that whatever that paint is, it can withstand the heat of re-entry. That must be some pretty good stuff!
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tahanson43206,
This weekend I should have some time to address the banned users issue.
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For kbd512 re #3844
Thanks for keeping that (low priority) request in mind. After the status is reset I'll resume email outreach.
For SpaceNut re image size using phpBB3 site:
I ran into that limit today. I was working on a Windows machine at the time so used Paint to write out the file as JPEG and it shrank to 109 KiB, which is under the limit of 250.
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For SpaceNut re converting members from banned to inactive status.
It turns out we need your help.
I was under a misunderstanding of how the banned subsystem works. kbd512 got some time to look at the problem this week, and he explained that it is not a simple process as I had imagined. Instead, you (as an Admin) must be running a php script of some kind to pull a member back from banned status and put them into inactive status as an unbanned member. Please document that procedure and post it here in housekeeping.
kbd512 and I would then have to study the procedure to see how it might be automated.
Your documentation needs to be as complete as possible, because I am not seeing what you are seeing, and kbd512 has not been trained in those features of the software.
I have a copy of fluxBB on my local machine, so I might be able to learn how to do the procedure there.
I appreciate you are likely extremely busy working on the house, so I figure it may be a while before you can help with this.
Speaking of your house ... we looked at the studs and frame picture this evening, and then the insulation covered picture, so I'm hoping you can show us an update when you have one.
Best wishes for progress with the roof!
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https://newmars.com/forums/admin_bans.php
enter * in the username box and hit submit to get the list
these are the banned users but they are not a group, each user is removed from the banned table only 1 at a time.
https://newmars.com/forums/admin_users.php
enter * in the username box and hit submit to get the list
this shows the Title/Statuss and those are inactive, members ect including the banned identies.
you can change the group to inactive but it is still a banned user if not removed from the individual under the first list.
The users m* that were change have not had info changed for the profile. I think we would still want to change the username and default the email to keep it locked out in the profile.
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For SpaceNut re #3874 ... thanks for the tips! We'll follow up.
FYI ... GW and kbd512 are taking deep dives into rocket technology these days.
In his latest work, GW has started looking seriously at tail dancers. Elon Musk and Jeff Bezos have set the modern standard for performance, but GW remnded recently that there have been previous attempts.
One was the famous DC-X (Delta Clipper Experimental)
Google reminded me of the era:
The McDonnell Douglas DC-X (Delta Clipper Experimental) was a 1990s prototype vehicle designed to rise into the air and return safely to its launch point. It was an uncrewed, single-stage-to-orbit prototype that pioneered the technology for vertical takeoff and vertical landing (VTVL).
Key facts about the DC-X:
The project was initiated in 1991 by the U.S. Department of Defense and later continued with NASA funding.
Standing 39 feet (12 meters) tall, it was capable of taking off, hovering, maneuvering laterally, and landing vertically on its four retractable legs.
It was one of the earliest programs to successfully demonstrate the full-cycle capability of VTVL, providing critical data that influenced later reusable rocket programs.While the DC-X was the original "X vehicle" to prove this concept, other well-known programs have since accomplished similar feats:
SpaceX Grasshopper: A Falcon 9 first-stage test vehicle that performed a series of "hop" tests, rising to progressively higher altitudes before landing vertically. It was a critical step in developing the reusable Falcon 9 first stage.Blue Origin New Shepard: This system, named after the first American in space, consists of a reusable rocket booster and a crew capsule. The booster lands vertically on a landing pad, while the capsule descends under parachutes.
Added item re: https://newmars.com/forums/viewtopic.ph … 00#p234200
Thanks for that detail about construction of the SpaceX vehicles! A detail I really appreciate is the thickness of the rolls of sheet: 3.97mm
kbd512 had estimated 4 mm, and I must say he was close.
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For SpaceNut .... nice image for Calliban's new wind mill topic!
I like the feature the text you found described, of automatic feathering to protect the system in case of strong winds.
And that was back in the 1850's!!!!
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For SpaceNut re post in Mystery topic ... https://newmars.com/forums/viewtopic.ph … 26#p234226
Thanks for the addition of this helpful collection of facts about Starship and Super Heavy
We have not yet solved the mystery of how 2,500,000 kilograms is supported by a wall that is only 4 mm thick.
In a calculation reported at the opening of the topic, Gemini computed that the force created by 2,500,000 kg on a surface of about a tenth of a square meter exceeds the compression strength of 304 steel.
Since the Super Heavy is obviously bearing that weight, the purpose of the topic is to (at least attempt) to figure out how the SpaceX engineers solved that problem.
The thrust structure at the base of the oxygen tank must be the key to the answer. My guess is that the thrust structure holds the entire mass of the oxygen tank, plus the engines and their associated hardware, but that still leaves the methane tank and the entire Starship as the load to be borne by the wall. As GW Johnson pointed out, the acceleration at liftoff adds to the effective weight on the wall.
As onlookers, we can see that the engineers solved a complex problem, but at this point the members of this forum have not yet published an analysis of force flows that explains what the SpaceX engineers have achieved.
In passing, I think it is worth noting that all the welds that allow force to transfer from the wall to the engine mount are participating in the success we see with every launch.
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