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#151 2019-10-26 20:06:37

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 17,736

Re: Deep Space Gateway; a bad joke by NASA?

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#152 2019-10-26 21:01:12

tahanson43206
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Registered: 2018-04-27
Posts: 1,804

Re: Deep Space Gateway; a bad joke by NASA?

For SpaceNut re #151

Thanks for finding this report on (what I perceive to be) important standardization for space communications.

It's easy to be distracted by the gateway as an application arena, but (in my opinion) what is far more important is the development of robust computer mediated packet communications for situations where there is significant time delay for transmission. 

The reliability of the Internet on Earth is possible because (in normal operation) packets are sequenced and verified and acknowledged.

Apparently (in the absence of the full specification) the new Internet protocol is able to handle delays characteristic of space communications.

(th)

Time-Triggered Technology
Time-Triggered Technology was invented by TTTech. The essence of this technology is to create networks that are fully deterministic, meaning each sender and receiver in a network knows when to send or expect a message. This brings several advantages: Not only are all failures that result in some latency in the network eliminated, it also allows to use the entire bandwidth of the links within the networks.

These advantages make the technology superior in terms of safety and reliability. Moreover, the implementation of the TTEthernet protocol is compatible with ordinary Ethernet traffic.

Based on IASIS, Deterministic Ethernet is becoming the de facto standard for avionics in the space industry. This makes the testing of space electronics much easier. Once in orbit, Time-Triggered Ethernet ensures the reliable data transfer among the computers used on board spacecraft or station - all with unparalleled speed and safety.

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#153 2019-10-27 09:46:26

SpaceNut
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From: New Hampshire
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Re: Deep Space Gateway; a bad joke by NASA?

Robertdyck would know more than I of the open industry standard i.e. SAE AS6802 which is geared at the windows 10 upgrade to the old 802 protocol...

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#154 2019-10-27 20:43:08

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
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Re: Deep Space Gateway; a bad joke by NASA?

Nasa was advertizing the station for the moon with hopes opf space partners to join in and here is Japan to join Artemis program

They are one of the current parterns in the ISS so it makes sense to continue with vested interests.

The Japanese statement said Japan would work with NASA and other partners to coordinate its participation in several ways. That includes offering technologies that could support the early lunar Gateway, providing logistics services with its next-generation HTV-X cargo vehicle, sharing data used for the selection of lunar landing sites and other lunar transportation services.

Next investor in the ISS is drum roll

In February, Canada announced it would develop a robotic arm for the Gateway, spending about $1.5 billion over the next 24 years.

Not all that surprizing to see.

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#155 2019-11-20 20:57:20

SpaceNut
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From: New Hampshire
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Re: Deep Space Gateway; a bad joke by NASA?

NASA adds 5 more companies to bid for work on moon mission

SpaceX, Blue Origin, Ceres Robotics, Sierra Nevada Corp. and Tyvak Nano-Satellite Systems are all working to design and build lunar landers capable of delivering science and technology payloads, including rovers and science experiments, to the moon's surface

The five new companies will compete for contracts with nine previously announced CLPS vendors, including Astrobotic Technology, Deep Space Systems, Draper Laboratory, Firefly Aerospace, Intuitive Machines, Lockheed Martin Space, Masten Space Systems, Moon Express and OrbitBeyond.

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#156 2019-11-30 20:24:14

SpaceNut
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Re: Deep Space Gateway; a bad joke by NASA?

http://www.spacedaily.com/reports/Europ … s_999.html

esa-nasa-jaxa-russia-canada-lunar-gateway-concept-diagram-modules-hg.jpg

The budget is split, with 12.5 billion euros ($14.1 billion) committed for three years and the full 14.4 billion euros over five, representing an increase of some four billion euros on the previous spending plan. Germany made the largest contribution to the budget, at some 3.3 billion euros, followed by France on 2.7 billion euros, Italy 2.3 billion euros and Britain with 1.7 billion euros.

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#157 2020-01-03 15:59:04

SpaceNut
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From: New Hampshire
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Re: Deep Space Gateway; a bad joke by NASA?

Just running through the topic from start  nd got to post #62 before seeing that nasa is way behind on sls development flights and trial runs to be give building the Gateway....

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#158 2020-01-05 20:09:46

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 17,736

Re: Deep Space Gateway; a bad joke by NASA?

3529a.jpg

Article is indicating even 2 years a new piece is put into orbit to make up this beast....

This is way to slow and has to many pieces...

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#159 2020-01-05 21:20:16

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
Posts: 17,736

Re: Deep Space Gateway; a bad joke by NASA?

Lockheed was using the existing protyes that were left over from the ISS which were just hanging around and these were built by the same Italian company that makes the cygnus for ATK that is now Northrop Grumman Innovation Systems... NASA Awards Contract to Northrop Grumman for Lunar Gateway Habitat Module

I sure would change horses as well since how slow Boeing and Lockheed are going with SLS to a proven performer....

NASA Awards Contract to Northrop Grumman for Lunar Gateway Habitat Module with production and tooling resources capable of meeting the 2024 deadline.
two habitation module prototypes: one seven meters long and 4.4 meters in diameter, and the other six meters long and three meters in diameter.

https://www.nasa.gov/sites/default/file … _Orbit.pdf
Cygnus Beyond Low-Earth Orbit – Logistics and Habitation in Cis-Lunar Space

pg 14 shows the standard unit sizes

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#160 2020-01-12 19:55:23

SpaceNut
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From: New Hampshire
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Re: Deep Space Gateway; a bad joke by NASA?

https://www.nasa.gov/sites/default/file … 6-ADD2.pdf
Mars Design Reference Architecture 5.0 – Addendum #2

image of habitat on pg 391
Metallic, cylindrical habitat: 7.2 m diameter
2.5 m barrel length for reasonable ceiling height
~25 m3/person habitable volume
Secondary structure 2.46 km/m2 of habitat surf area
Four 0.5 m diameter windows
1 exterior hatch
3 docking mechanisms, 2 docking tunnels
Atmospheric pressure = 70.3 kPa (10.2 psi)
5.8 cm water-wall on crew quarters for SPE protect
2 photovoltaic (3 junction GaAs) arrays
~20 kWe end of life power
120 V DC power management (92% efficient)
3 Li-ion batteries (200 W-hr/kg) ~40 kW-hr storage

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#161 2020-01-14 18:51:36

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
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Re: Deep Space Gateway; a bad joke by NASA?

This gives more about the lunar orbital station timeline, the moon landings and then a final reload of cargo before setting out on a loop around mars.

https://www.ida.org/-/media/feature/pub … 10510.ashx
Evaluation of a Human Mission to Mars by 2033

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#162 2020-02-01 21:51:34

SpaceNut
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From: New Hampshire
Registered: 2004-07-22
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Re: Deep Space Gateway; a bad joke by NASA?

Another step forward for station modules being more commercial has happened in  Axiom Space to build commercial space station segment first module launching in the second half of 2024.

Axiom-ISS.png

Axiom Space, an American company headquartered in Houston, Texas, to design, build and launch three large pressurized modules and a large Earth observation window to the International Space Station (ISS).

These are seemingly designed to work with the Gateway as well as the missions for mars and not just for the ISS to tryout first.

“NASA and Axiom will next begin negotiations on the terms and price of a fixed-price contract with a five-year base performance period and a two-year option” which indicates that these details have not been completely ironed out yet

What you order something before you know what its going to cost?

Axiom has a dream of there own space station
7a1cc33e-80db-4eea-9d62-9bc979923166.png

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