Recommended Posts

https://www.nasa.gov/feature/nasa-spacex-agree-on-plans-for-crew-launch-day-operations

Quote

NASA, SpaceX Agree on Plans for Crew Launch Day Operations

 

NASA's Commercial Crew Program and SpaceX are finalizing plans for launch day operations as they prepare for the company's first flight test with astronauts on board. The teams are working toward a crew test flight to the International Space Station, known as Demo-2, with NASA astronauts Bob Behnken and Doug Hurley in April 2019.  

A key question the program and the company have been assessing is whether the astronauts will climb aboard the Crew Dragon spacecraft before or after SpaceX fuels the Falcon 9 rocket. NASA has made the decision to move forward with SpaceX's plan to fuel the rocket after the astronauts are in place. While the agreement makes this plan the baseline for operations, it is contingent upon NASA's final certification of the operation.

"To make this decision, our teams conducted an extensive review of the SpaceX ground operations, launch vehicle design, escape systems and operational history," said Kathy Lueders, manager of NASA's Commercial Crew Program. "Safety for our personnel was the driver for this analysis, and the team’s assessment was that this plan presents the least risk."

Additional verification and demonstration activities, which include five crew loading demonstrations of the Falcon 9 Block 5, will be critical to final certification of this plan. These loading demonstrations will verify the flight crew configuration and crew loading timeline prior to Demo-2. After these conditions have been met, NASA will assess any remaining risk before determining that the system is certified to fly with crew.

If all goes according to plan, on launch day, the Falcon 9 composite overwrap pressure vessels, known as COPVs, will be loaded with helium and verified to be in a stable configuration prior to astronaut arrival at the launch pad. The astronauts then will board the spacecraft about two hours before launch, when the launch system is in a quiescent state. After the ground crews depart the launch pad, the launch escape systems will be activated approximately 38 minutes before liftoff, just before fueling begins. SpaceX launch controllers then will begin loading rocket grade kerosene and densified liquid oxygen approximately 35 minutes before launch. The countdown and launch preparations can be stopped automatically up to the last moment before launch. In the unlikely event of an emergency at any point up to and after launch, the launch escape systems will allow the astronauts to evacuate safely.

This timeline is consistent with the fueling procedures SpaceX uses for its commercial resupply missions and satellite launches.

The crew launches of NASA’s Commercial Crew partners SpaceX and Boeing will return the nation’s ability to launch our astronauts from the United States to and from the International Space Station on American spacecraft.

 

This seems like the best way to do it to me, in my head, loading the propellant before you get on the rocket seems more dangerous cause your not strapped into a safety mechanism, what happens if there is an issue as you are walking up to the thing.

 

I guess there is a lot of other things to consider, mostly that more issues happen during loading. But every time i just think its safer to be in the capsule with an escape system than not.

Starliner control console. 

 

No touch screens, you use physical buttons to navigate through menus and flip pages. Not unlike some old MSDOS programs. Some features borrowed from Orion. 

 

Still, Boeing stresses it's intended to be an automated taxi.

 

DlEsLaBW0AAu780.jpg

 

 

Edited by DocM

Observe the land of double standards ... sheesh. This is what that Professor (now colleague) of mine was talking about before regarding all of the arbitrary crap being pulled on SpaceX. 2, even 3 times the amount of testing and redundancy relative to everyone else's gear simply to harass and delay them. :no: 

 

Look at 'em. Just look at 'em.

Overpressure from launches causing damage to the tower being the primary reason why. :yes: There are internal upgrades that are going to be going into it once the cladding is installed that have to be protected, and possibly the Crew Access Area is gonna need to be climate controlled too.

 

Then the matter of whether the site will be used to launch BFR or not ... still undecided. South Texas is still a better fit due to logistics. Depends on a bunch of factors, chief among them what the FAA says concerning the planned launch corridor at this point but if the point-to-point BFS flights work out well then it'll alleviate a lot of concerns.

Can't get everywhere shooting the gap between the Keys and Cuba, or going South of Cuba, to avoid overflight issues. The best trajectories look to be GEO, Lunar and interplanetary.

 

For P2P Florida may be better; launch polar-ish then a dogleg to Asia, Oz and NZ. Straight shots to Europe and the ME (KSA is interested, likely UAE as well.)

 

Deployed

 

Edited by DocM
  • Like 1

I completely agree. What I'd like to see are flights out of the Cape, Vandy and South Texas. Use Vandy for polar tracks, ST and KSC for the rest of the flight tracks.

 

Personally I think KSC is the standard option for anything "up and out" (GTO+, TLI, etc), but ST is a better option (or could be made such) from a logistical standpoint. It's much, much closer to SpaceX's facilities than KSC, they don't have to go through a big hassle to get it to the launch site, and the Gulf is a huge body of water in it's own right. The dogleg maneuver isn't that big of a deal in the grand scheme of things and BFR/BFS has tons of spare dV to spend on the inclination change as it shoots the gap between Florida and Cuba.

 

Even if it looks like the dV can't be spared for a mission there's always the potential to launch from KSC and it'll eliminate that issue entirely. :yes: 

 

Speaking of KSC, looks like the tower got a cleaning and a new coat of primer .... :D 

55 minutes ago, Unobscured Vision said:

>

Speaking of KSC, looks like the tower got a cleaning and a new coat of primer .... :D 

 

I'd expect an overcoat before mounting the external panels. Curious as to B&W, metallic or ??

  • Like 1

Likely it'll be a protectant to deal with the salt content (as well as the humidity) in the air. That stuff is rough on metals.

 

End result will likely be a grey-white appearance.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Dude, im talking about simply disable it from settings app. Because of the eu regulation, you could disable it here for years.
    • One big question about Mars was answered thanks to Einstein's 100 year old theory by Sayan Sen Image via DepositPhotos Scientists at the U.S. National Institute of Standards and Technology (NIST) have calculated how time passes on Mars compared with Earth, adding detail to how timekeeping would need to work beyond Earth’s orbit. The study, published in The Astronomical Journal, found that clocks on Mars run an average of 477 microseconds, or millionths of a second, faster per day than clocks on Earth. A microsecond is one millionth of a second, a very small unit used in precise scientific timing systems such as atomic clocks, which measure time using consistent atomic behavior. This difference is not constant. Because Mars moves around the Sun in a non-circular path (an eccentric orbit, meaning its distance from the Sun changes over time instead of staying fixed) and is affected by gravity from other bodies, the daily difference can vary by as much as 226 microseconds over a Martian year. The study also identifies smaller repeating changes of about 40 microseconds per day linked to synodic cycles (repeating periods that describe how planets line up with each other as they orbit the Sun from different positions). These longer patterns affect how time differences slowly rise and fall. To make these estimates, researchers compared Mars with Earth and the Moon. The work looks at relativistic proper time (the time actually measured by a clock depending on its speed and the strength of gravity where it is located, as described in Einstein’s relativity). This shows that each world has its own slightly different “rate” of time. This becomes more important as space missions expand into cislunar space (the region between Earth and the Moon) and toward Mars. On Earth, time systems rely on atomic clocks and satellites, which stay closely synchronized for navigation and communication. The study is based on Albert Einstein’s theory of relativity, which shows that time is affected by gravity and motion. Stronger gravity makes clocks run slower, while weaker gravity makes them run faster. “The time is just right for the Moon and Mars,” said NIST physicist Bijunath Patla. “This is the closest we have been to realizing the science fiction vision of expanding across the solar system.” A day on Mars is about 40 minutes longer than on Earth, and a Martian year lasts 687 Earth days. But the main question is not just about days and years, but how fast time itself passes. An atomic clock placed on Mars would function normally, but compared with one on Earth, the two would slowly drift apart due to differences in gravity and motion. This requires careful calculation of what is similar to a time-zone difference across planets. Researchers modeled Mars using a reference surface and included gravitational effects from the Sun, Earth, the Moon, and other planets. This includes a multi-body gravitational system (often described as a three-body or four-body problem, where predicting motion becomes difficult because multiple large objects all pull on each other at the same time through gravity). Mars also follows a Keplerian orbit (an idealized elliptical orbit based on simple gravitational laws that assume smooth motion, before adding real-world disturbances from other bodies). In addition, the researchers accounted for solar tides (small changes in gravitational force caused by the Sun that slightly distort planetary motion and timing, especially in systems involving Earth and the Moon). These combined effects are described as relativistic proper-time offsets (small but measurable differences in elapsed time between locations caused by gravity and motion), which must be included when comparing clocks across planets. “But for Mars, that’s not the case. Its distance from the Sun and its eccentric orbit make the variations in time larger. A three-body problem is extremely complicated. Now we’re dealing with four: the Sun, Earth, the Moon and Mars,” Patla explained. “The heavy lifting was more challenging than I initially thought.” Although the differences are extremely small, they matter for navigation and communication systems that depend on precise timing. Even modern networks on Earth, such as mobile systems, rely on timing accuracy at very small fractions of a second. Communication between Earth and Mars currently takes about four to 24 minutes or more depending on planetary positions, meaning signals are not real-time. A shared and accurate time system could help future missions reduce confusion in navigation and data exchange. “If you get synchronization, it will be almost like real-time communication without any loss of information. You don’t have to wait to see what happens,” Patla said. Researchers note that fully developed interplanetary communication networks are still far in the future. However, understanding how time behaves across planets helps prepare for those systems. “It may be decades before the surface of Mars is covered by the tracks of wandering rovers, but it is useful now to study the issues involved in establishing navigation systems on other planets and moons,” said Neil Ashby. “Like current global navigation systems like GPS, these systems will depend on accurate clocks, and the effects on clock rates can be analyzed with the help of Einstein’s general theory of relativity.” Patla added that the results also help improve understanding of time itself under relativity. “It's good to know for the first time what is happening on Mars timewise. Nobody knew that before. It improves our knowledge of the theory itself, the theory of how clocks tick and relativity,” he said. Source: NIST, IOPscience This article was generated with some help from AI and reviewed by an editor. Under Section 107 of the Copyright Act 1976, this material is used for the purpose of news reporting. Fair use is a use permitted by copyright statute that might otherwise be infringing.
    • TeraCopy 4.0 Build 26 by Razvan Serea TeraCopy is a compact program designed to copy and move files at the maximum possible speed, also providing you with a lot of features. Copy files faster. TeraCopy uses dynamically adjusted buffers to reduce seek times. Asynchronous copy speeds up file transfer between two physical hard drives. Pause and resume transfers. Pause copy process at any time to free up system resources and continue with a single click. Error recovery. In case of copy error, TeraCopy will try several times and in the worse case just skips the file, not terminating the entire transfer. Interactive file list. TeraCopy shows failed file transfers and lets you fix the problem and recopy only problem files. Shell integration. TeraCopy can completely replace Explorer copy and move functions, allowing you work with files as usual. TeraCopy is free for non-commercial use only. For commercial use you need to buy a license. The paid version of the program includes the following features: Copy/move to your favorite folders. Save reports as HTML and CSV files. Select files with the same extension/folder. Remove the selected files from the copy queue. TeraCopy 4.0 Build 26 changelog: Added support for receiving files via the LocalSend protocol. Improved exception handling and automated bug report upload. Fixed several minor bugs and small memory leaks. Build 26 (June 24) Fixed a rare exception when a transfer completed. Features added since version 3.17: Enhanced speed graph. New multi-threaded copy engine. Support for copying to multiple targets. Queue system for managing multiple copy operations. Support for receiving files via the LocalSend protocol. TeraCopy entry in the modern Windows Explorer context menu. Integrated toolbar in the title bar. Why receive LocalSend transfers with TeraCopy? Handle file conflicts: Skip, overwrite, or rename files when a file with the same name already exists. LocalSend always creates another copy, which can waste time and disk space, especially when resuming an interrupted transfer. Filter unwanted files: Apply ignore lists or remove files manually before accepting a transfer, so unnecessary files are not downloaded. Better performance on fast networks: In tests over a 10 Gbps connection, TeraCopy received files several times faster than the standard LocalSend app on Windows. Download: TeraCopy 4.0 Build 26 | 14.5 MB (Freeware, paid upgrade available) View: TeraCopy Website | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • Briefly used Turbo Pascal (and Turbo C++) in 97 and soon after that I bought PC magazine that included a full version of Delphi 2. I still use Delphi today, some 29 years later.
    • Age of Empires Mobile comes to PC, here's how to carry over progress from your phone by Ivan Jenic Image: YouTube/Microsoft Microsoft just released Age of Empires Mobile for PC. The game, officially called Age of Empires Mobile: PC Edition, is available for free on Steam and Microsoft Store, almost two years after its initial release for handheld devices. Age of Empires is one of those franchises that entire generations grew up with. The original came out in 1997, and immediately got people hooked to building civilizations and crushing their enemies on the battlefield. However, the franchise today is a far cry from its roots, as Age of Empires Mobile is, well, a game optimized for handheld devices, and not a classic RTS title we’ve all loved for years. And, of course, it includes in-game purchases. The PC version is still a mobile game at its core, but it’s been optimized for desktop play. There’s mouse control, full keyboard compatibility, and a refined UI. Microsoft also refreshed the visuals with some 4k textures, so the game should look better on larger screens. The game supports Crossplay, so you can switch between your phone, tablet, and PC without losing anything. But linked progress doesn’t come out of the box, as you have to enable it first. Here’s how to link your progress: On your mobile device, open Age of Empires Mobile. Go to Settings (Gear icon) > Account. Select Bind Account and choose a sign-in option. Once you enable account binding, sign in on PC using the same method, and your progress will be accessible across all your devices. Xbox Game Pass subscribers also get a bonus reward pack on PC, which includes: 1 Monthly Pass Token 1 Custom Resource Chest 10 Universal 60-Minute Speed-Ups 1,000 Empire Coins Exclusive Player Portrait Frame You can find more info about Age of Empires Mobile: PC Edition, as well as download links, on the Age of Empires official website.
  • Recent Achievements

    • One Year In
      Philsl earned a badge
      One Year In
    • Dedicated
      Scoobystu earned a badge
      Dedicated
    • First Post
      Tom Schmidt earned a badge
      First Post
    • One Month Later
      D0nn13 earned a badge
      One Month Later
    • Rookie
      +ChiefOfNeo went up a rank
      Rookie
  • Popular Contributors

    1. 1
      +primortal
      460
    2. 2
      +Edouard
      177
    3. 3
      PsYcHoKiLLa
      124
    4. 4
      Michael Scrip
      79
    5. 5
      Xenon
      76
  • Tell a friend

    Love Neowin? Tell a friend!