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#1501 Re: Single Stage To Orbit » Vertical Launch Assist Technologies for SSTO » 2024-06-09 09:02:45

The use of a fuel to make a means to push the rocket is similar to dropping a stage after use.

The Astronautix site also contains lots of history of the engines that have been used.

#1502 Re: Human missions » Starship is Go... » 2024-06-08 08:57:10

Normal engines out during the flight path is expected to be done to save fuel and capability for the unexpected. But not normal is when an engine fails such as the 1 did on the BFR stage. One can only turn on normal off engines when you have extra engines to do so which could be done on the starship during the landing if required.

Seems that based on the heat getting into the wing would call for design changes and other testing flights.

#1503 Re: Meta New Mars » Housekeeping » 2024-06-08 08:48:41

Money for the https://en.wikipedia.org/wiki/Intuitive_Machines_Nova-C was designed by Intuitive Machines (IM) to deliver small payloads to the surface of the Moon. Withe the seed money coming from Nasa to deliver to the moon but under contract it did do that. With no money coming from outside of the US from what I can tell.

Using the opinion words from some twitter content might not be the best choice and then change or conflating to another failed craft not related also makes for off topic content. Comparing cost to another off topic would also be outside of the scope of the topic.


As an Admin part of my role is to direct Net Etiquette or NewMars forum Rules such as they are from its beginning. Now I am being off topic to give the reminder. I am sure there are more such moderation of content rules and that is why we have as many Admin's and mod's as we do.

#1504 Re: Meta New Mars » Mars B4 Moon postings » 2024-06-08 08:48:11

Money for the https://en.wikipedia.org/wiki/Intuitive_Machines_Nova-C was designed by Intuitive Machines (IM) to deliver small payloads to the surface of the Moon. Withe the seed money coming from Nasa to deliver to the moon but under contract it did do that. With no money coming from outside of the US from what I can tell.

Using the opinion words from some twitter content might not be the best choice and then change or conflating to another failed craft not related also makes for off topic content. Comparing cost to another off topic would also be outside of the scope of the topic.


As an Admin part of my role is to direct Net Etiquette or NewMars forum Rules such as they are from its beginning. Now I am being off topic to give the reminder. I am sure there are more such moderation of content rules and that is why we have as many Admin's and mod's as we do.

#1505 Re: Unmanned probes » Odysseus Lander on the Moon » 2024-06-08 08:46:50

Money for the https://en.wikipedia.org/wiki/Intuitive_Machines_Nova-C was designed by Intuitive Machines (IM) to deliver small payloads to the surface of the Moon. Withe the seed money coming from Nasa to deliver to the moon but under contract it did do that. With no money coming from outside of the US from what I can tell.

Off Topic:
Using the opinion words from some twitter content might not be the best choice and then change or conflating to another failed craft not related also makes for off topic content. Comparing cost to another off topic would also be outside of the scope of the topic.

As an Admin part of my role is to direct Net Etiquette or NewMars forum Rules such as they are from its beginning. Now I am being off topic to give the reminder. I am sure there are more such moderation of content rules and that is why we have as many Admin's and mod's as we do.

Keep in mind that off topic content is not wanted or warranted in a post. I do try to be fair with post content and consider the members standing when making choices to amend, or to move post content. This is what also is expected by all of the other Admin and Moderators of the forum.

#1506 Re: Unmanned probes » Odysseus Lander on the Moon » 2024-06-08 08:30:58

That can only mean that someone has your log in information.
When the real NewMars member Mars_B4_Moon logs in go to the user profile Mars_B4_Moon  and change your password.

#1507 Re: Human missions » Starship is Go... » 2024-06-06 19:49:59

See Elon Musk's Starship shredding apart as it descends to Earth, with a whole fin almost ripping off

Seems more structural mass will be taken from the payload that it might one day show that it can haul to orbit.

#1508 Re: Business Proposals » Sea Level Rise Business Opportunity » 2024-06-06 19:43:09

We have the inverse in the Pacific as China is building the rocks into bigger pieces of property.

Other money-making is through property insurance guard for the wall that is built. Surveying of lots to know where it can be built. Waterway rights of the land that resides within its reach but also from the standpoint of law.


update:
The company that builds the wall would want to get interest so they would also want to do insurance so as to prove that they are behind their product that they build.

Over build the wall to meet the 500 years high and there should not be any failure.

#1509 Re: Business Proposals » Sea Level Rise Business Opportunity » 2024-06-05 19:15:17

First other than Nasa data no one is viewing or monitoring with measurements for places that need help now. Other than the news story that near ocean loss of property we never hear anything until it's too late to put a plan into motion that would save them.

Reminds me of the slow glass topic....

#1510 Re: Single Stage To Orbit » Vertical Launch Assist Technologies for SSTO » 2024-06-05 19:05:14

https://en.wikipedia.org/wiki/Equations_of_motion

Ship mass = 200,000 kg
5 (9.8M/s) = 49 m/s^2
Force = 9,800,000 N

2*d/t^2=a
2*1Km/ 49 m = 6.38874 sec

https://www.engineeringtoolbox.com/acce … _1769.html

update the * is the multiple in the equation.

#1511 Re: Business Proposals » Sea Level Rise Business Opportunity » 2024-06-04 17:33:45

Since you have waves crashing against the walls that are built why not use it to do the energy creation.

Also, all of the estuaries with the tidal water can spin turbines in each direction of the water flow every day as another method.

#1512 Re: Single Stage To Orbit » Incline or Horizontal Launch Assist Technology for SSTO » 2024-06-04 17:29:55

It is an art to solve problems as now a location that fits the model with alteration.

It means a carrier sled with or without wheels.

Electrified with a tremendous level of power with each use in a short period of time.

It's one of the reasons that they stopped going towards the electrical due to component breakdown.

#1514 Re: Human missions » Starship is Go... » 2024-06-03 17:54:12

SpaceX fourth Starship launch: how and where to watch it in the US on TV and online? tentative date for the fourth test is set for next Thursday, June 6, provided FFA approval is obtained.

at 7:00 a.m. CT / 8:00 a.m. ET / 5:00 a.m. PT

#1515 Re: Single Stage To Orbit » SSTO Minimum Isp to Achieve Orbit » 2024-06-03 17:50:52

Seems that BE-4 engine and the Raptor are coming up quite strong.
Blue Origin's BE-4 Vs. SpaceX's Raptor Engine: What's The Difference Between Them?

In a while we may not how much more stable it will be.

#1516 Re: Life support systems » Architecture for Sea Level Rise on Earth » 2024-06-02 17:49:13

A recent report highlights that since 2010, the Gulf of Mexico has seen sea levels rise at twice the global average rate. Tide gauges from Texas to North Carolina show sea levels at least six inches higher than 14 years ago.

#1517 Re: Business Proposals » Sea Level Rise Business Opportunity » 2024-06-02 17:40:56

What is the Length of the US Coastline?

The National Oceanic and Atmospheric Association (NOAA), for example, took a measurement of all the United States coastlines in 1939-40 and again in 1970. They surmised that the total length of the combined US coastlines amounted to approximately 95,471 miles.

This measurement took all US territories and their borders with water into consideration, including Hawaii and Alaska, as well as other Pacific and Carribean islands.

here is the other topic... Architecture for Sea Level Rise on Earth

https://en.wikipedia.org/wiki/Timeline_of_glaciation

#1518 Re: Single Stage To Orbit » 500 passenger safety use requirements » 2024-06-02 17:32:10

Yes, since I have worked with fiber optic cable making where the jacket of Kevlar fibers is thread like materials, but it's still needs to be woven and then stretched over a frame to make it not sag.

1 gallon of water a day per person and then food and oxygen must be supplied for the duration that seems like it could go nearly a week.

#1519 Re: Science, Technology, and Astronomy » Rocket Equation » 2024-06-02 17:20:00

https://www.omnicalculator.com/physics/specific-impulse

Seems that the engine running on the RP/Lox are all about the same even the Russian models that we are building a replacement for.

Seems even methane / lox is not all that much better.

https://en.wikipedia.org/wiki/Compariso … et_engines

#1520 Re: Science, Technology, and Astronomy » X-37, What happened? - What is the status? » 2024-06-02 17:15:15

Handed over to the space force while the other version went into the dumpster of time.

#1521 Re: Single Stage To Orbit » SSTO Airframe and TPS Materials » 2024-06-02 17:10:56

We know that the composite tank for the starship was fully tested, and it seemed to hold up plus even did a burst test at sea from what I recall.

#1522 Re: Single Stage To Orbit » 500 passenger safety use requirements » 2024-06-02 17:08:51

From launch to docking, a spacecraft typically takes between 6 hours and 3 days to travel from Earth to the International Space Station.

Seems we need to plan for the worst of the times both up and down.

#1525 Re: Home improvements » Solar cooking » 2024-06-02 11:40:36

Sort of like a trough end view and of course there are many commercial off the shelf units that one can buy versus make.

some are quite cheap
81Uw6zfawzL._AC_SL1500_.jpg

How Does a Solar Oven Work: Understanding Eco-Friendly Cooking

10 Best Solar Stoves: Reviews & Buyer’s Guide

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