John Valentine

50 posts

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John Valentine

John Valentine

@JValentine1972

Katılım Haziran 2024
159 Takip Edilen10 Takipçiler
John Valentine
John Valentine@JValentine1972·
@Peter_J_Beck I'll never understand how little attention Rocket Lab get. Just quietly delivering flawlessly 🤷
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Peter Beck
Peter Beck@Peter_J_Beck·
100% mission success
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John Valentine
John Valentine@JValentine1972·
@RyanHansenSpace But going back to that wild flip is surely a bad idea. Controlling it with the filled in section gave them a predictable gentle flip in the correct direction every time. Throwing it around while firing up all 33 has to be a mistake
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Ryan Hansen Space
Ryan Hansen Space@RyanHansenSpace·
33 ENGINE BOOST BACK IS NOT A MISTAKE (likely a shorter duration on 33 engines to cancel horizontal velocity before switching to 13)
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Live Fancams
Live Fancams@LomaxFalconer·
@CSI_Starbase Really cool, but it looked like the hot staging was too aggressive and flipped too fast and messed with the fuel delivery for the boost back. They might need to tone that down.
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Zack Golden
Zack Golden@CSI_Starbase·
🤯My goodness! I've always wanted to see Superheavy jump off the pad like that! Although I don't think this was as fast as they originally planned. But, now that the pad isn't holding the vehicle back anymore we can see the true monster thats been hiding this entire time.
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John Valentine
John Valentine@JValentine1972·
@SpaceX Looks like they reintroduced the old booster flip maneuver problem that starved all the engines of fuel again. As soon as I saw the new hot stage ring I wondered how they would get around that
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SpaceX
SpaceX@SpaceX·
Starship’s Raptor engines ignite during hot-staging separation
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kate_tice
kate_tice@kate_tice·
Obligatory Booster transport selfie… Can’t wait for Starship Version 3 debut! #starship #starbase
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Vanta
Vanta@Vantadaga·
@CSI_Starbase I still think this decision is gonna bite them again in the future.
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John Valentine
John Valentine@JValentine1972·
@NASASpaceflight Incredible engineering feat again, but somehow even worse coverage. I really hope in their new hiring spree it includes video production and transmission staff. 🤦
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Jack Beyer
Jack Beyer@thejackbeyer·
Unsure if the hair net is actually necessary or if the cleanroom guys are just messing with me today @AstroForge
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John Valentine
John Valentine@JValentine1972·
@AubergerMatthew @DJSnM Falcon 9 fairings cost $6M a pair and are recovered and reused. Blue Glenn fairings will likely be more. The second stage of falcon 9 or Blue Glenn costs presumably at least double that I would imagine.
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Matt
Matt@AubergerMatthew·
How much does the stage (2nd) actually cost to build and dispose. That’s a huge fairing. If it’s a couple million dollars - I’d argue it’s better than full reusability. I’m very interested in this question. If it’s 2 million bucks, it’s a better option. And, Scott, what about the fairings? Neutron is badass - does Blue recover fairings? Or does the economics make it irrelevant?
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Scott Manley
Scott Manley@DJSnM·
I did get to visit Blue Origin yesterday, I didn’t get to take pictures beyond the lobby, but I saw the rocket factory full of hardware. Multiple GS-2 builds, and a booster fore and aft sections being kitted out. They’re going to be able to launch a lot once booster reuse gets going. Of course, I really wanted to know what HLS plans are, but all they’d let me know was how hard they’re working.
Scott Manley tweet mediaScott Manley tweet mediaScott Manley tweet mediaScott Manley tweet media
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John Valentine
John Valentine@JValentine1972·
@PhotonEmpress @_MaxQ_ The reality is that you and your team at Spacex completely redefined what was possible (spurred on by Starlink) to a level that will be hard to beat any time soon. This has not been anyone's focus so far, certainly not NASA, but now it will be. Jared for sure will get it there.
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Photon Empress 🌸
Photon Empress 🌸@PhotonEmpress·
I don't think there is anyone on the planet who has done more live rocket broadcasts than me. I literally have done *hundreds* of them over the last 18 years. And some of the largest launch broadcasts on the planet too! I say this not to brag, but to convey a level of expertise in launch broadcasts that I think few, if any, can beat. Ok, maybe brag a little 👸 I know a lot of people were not super happy with NASA's coverage, specifically at liftoff. But man, let me tell you... As someone who has done hundreds of these... IT IS FREAKING HARD! I have personally had bad liftoff sequences too. It happens. And it sucks. And I hated it when I did that. To me. And to you. It is hard to convey just how complex liftoff is during a broadcast. It is a moment in time where nearly every view is available, but very few are viable. You never truly know which ones will be viable either, so it's a guessing game and a bit of luck. You have to scan through to find the shots that work, but you only have *seconds* to do this. Seconds. I have learned over the years that a technical director (vision mixer) needs an A and B plan for liftoff. Generally engines -> pass through -> medium -> wide -> super wide -> track scope -> track spot for the A plan. The B plan is usually far easier with engines -> wide -> super wide -> track scope. The switcher control surface needs to be set up to execute these plans extremely quickly. And even if you do all of this, a gust of wind blowing smoke the wrong way can foil the best of plans. It. Is. Hard. I hear ya all, but let's cut NASA some slack here. They have amazing people working the launch. They have many people they need to support in their broadcast including the media, schools, NASA employees, government officials, and the public. It is like getting pulled in a billion different ways all at once. Was liftoff coverage epic? No. I mean, it just wasn't. Will they learn from this and make Artemis III better? I believe they will. I know the people working these things, and they are great. Don't let one launch paint a bad picture here. There is enough space for everyone. If you didn't like NASA's coverage, then @NASASpaceflight, @TLPN_Official, @Erdayastronaut, @SpaceflightNow and more had other, amazing options that may suit your tastes better. We live in a time where you have incredible options. It's awesome and exciting. Oh, and WE HAVE FOUR HUMANS GOING TO THE MOON RIGHT NOW! Lets be excited about that instead!
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John Valentine
John Valentine@JValentine1972·
@JeRo55170 @SilentBobdcv @ARCRaidersMedia All you get with the deluxe edition is cosmetics and some coins. What are you missing? If you don't want to lose your gear, don't do the expedition. Most extraction shooters have no choice, but Arc does.
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Je Ro
Je Ro@JeRo55170·
@SilentBobdcv @ARCRaidersMedia I know that, but now I've lost everything, even my purchases, the Arc Raiders Deluxe upgrade is gone and there's no way to recover it, even though Steam says I already bought it. Now I have to redo everything, even the intros from the beginning of the game when I bought it.
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ARC Raiders Updates
ARC Raiders Updates@ARCRaidersMedia·
ARC Raiders landed in hot water after computer engineer Timothy Meadows discovered the game was silently logging players' private Discord direct messages to a plain text file stored locally on their PC — along with Discord bearer authentication tokens that could potentially allow unauthorized access. The issue only affected players who had linked their Discord accounts to the game. Embark Studios quickly responded, confirming the Discord SDK had captured more data than intended, while assuring players that no messages were ever transmitted to external servers or accessed by developers. A hotfix has since been rolled out disabling the problematic logging, with the studio also announcing a deeper audit to prevent similar issues down the line.
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John Valentine
John Valentine@JValentine1972·
@ARCRaidersNews Peanut killed a guy very early on. He'd just killed peanut, rezzed him back. He had a tick crawling at his feet and threw a Wolfpack for a laugh, Wolfpack obliterated the tick and the guy.
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ARC Radar
ARC Radar@ARCRaidersNews·
First ever player kill with wolfpacks? 😭
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John Valentine
John Valentine@JValentine1972·
@PrimordialTroll @ArcRaidersNow There's already dozens of real money blueprint and item trading apps/sites going on and hundreds of discords for trading, so bringing it in game wouldn't be worse I don't think.
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G0d
G0d@PrimordialTroll·
No, it'll end up like monster hunter wilds. They catered to a bunch of people trying their hardest to have people talk with others. Even at monster hunter wilds peak nobody gave a fuck about "meeting new people" Also this will allow real cash trading for blueprints which would basically ruin the game. Why bother to ask people what they think when logically it would hurt the game and its development.
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ARC Now
ARC Now@ArcRaidersNow·
Arc Raiders developers have confirmed they’ve discussed turning Speranza into a fully walkable hub. According to the team, there’s strong interest internally — it’s just a matter of when the timing feels right to open that door. A social space to explore, meet other Raiders, and soak in the world could be a huge upgrade. What’s the ONE thing you’d want to do in a walkable Speranza hub? #ArcRaiders
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John Valentine
John Valentine@JValentine1972·
@SciGuySpace I'm interested to see what this might do to the falcon programme too. Although starship potentially represents this massive reduction in cost per tonne, falcon is likely to still be pretty attractive financially for some time for some payloads.
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John Valentine
John Valentine@JValentine1972·
@shub_5 @JeffBezos They didn't have problems with cold staging at all, they lost 5 raptors on the first stage largely due to the concrete tornado
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Bagade
Bagade@shub_5·
New Glenn's elegant cold staging system is a beautiful and worked well, SpaceX has faced some issues with Starship's separation mechanism. The challenge of reliable stage separation is real. In its initial flight attempts of Starship especially IFT-1 and IFT-2, Starship struggled with the Reliable Cold Staging. The design aimed for the Super Heavy Booster to cut thrust completely, let inertia carry the upper Starship stage forward slightly, and then fire the Starship engines and use small pushers to separate. It was a Structural Simplicity choice, it minimizes stress on the upper stage and avoids complex thermal management. But the separation mechanism and sequencing proved unreliable. The most visible failure mode was the upper stage encountering thrust issues or failing to properly clear the booster, leading to the loss of the entire vehicle. The physics of an extremely large, heavy booster (Super Heavy) and a delayed-start upper stage made the separation sequence highly susceptible to minor timing or structural errors. Since then SpaceX has chose to pivot to Hot Staging, a solution that solves the Reliable Staging problem at the expense of Structural Simplicity. I hope SpaceX finds a way to do Reliable Cold Staging with Starship.
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Casey Handmer
Casey Handmer@CJHandmer·
Blog on the NASA Orion space capsule is up. 20 years, $31.6b, and they're planning to fly it around the Moon with four astronauts next year, and also test the life support system and heat shield, which kinda sorta failed on the last flight. Anyway, this was miserable to write, I hope you enjoy it. Link below!
Casey Handmer@CJHandmer

Not long now.

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kate_tice
kate_tice@kate_tice·
Happy Halloween from SpaceX Build & Flight Reliability! ~160 fake mustaches, 3 sites, 1 surprised Gerst 🎃
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