MaverickSawyer Posted March 7, 2019 Share Posted March 7, 2019 I'd consider the successful conversion of the Falcon 9 design from expendable to reusable to be a fluke. They had to seriously redesign the first stage to handle the new mission, and did so basically on the fly. Taking an established expendable design and converting it to a reusable one is pretty much a non-starter. It'd be better to start with a clean sheet. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted March 7, 2019 Share Posted March 7, 2019 (edited) 1 hour ago, DDE said: The RD-193 was never designed for aerial restart or precision shutoff. You mean RD-191? Yes, it wasn’t. But Energomash needs work, right? So, here’s a good reason for new RD-19X. 1 hour ago, DDE said: And then of course there are the logistical impossibilities of fetching it from non-RTLS sites. Make it RTLS then. 1 hour ago, DDE said: Finally, Angara has been left in the cold by the manned program, and Khrunichev’s passion for Proton is proving unkillable. It’s actually a poor vehicle to place bets on. Proton is old and not quite environment-friendly. And it’s retired, no? So Angara will have to take over at some point in the 2020s. Aaand there’s that Russian SLS Yenisei that needs an upper stage from Angara. This rocket is unavoidable. Edited March 7, 2019 by sh1pman Quote Link to comment Share on other sites More sharing options...
DDE Posted March 7, 2019 Share Posted March 7, 2019 46 minutes ago, sh1pman said: You mean RD-191? Yes, it wasn’t. But Energomash needs work, right? So, here’s a good reason for new RD-19X. I'm not sure mastering an injector type they've only barely heard of is a good challenge for them. That, and they're already having serious issues at low thrust - issues that I don't think they'll completely rectify. I'm still betting on Soyuz-2.1v. 48 minutes ago, sh1pman said: And it’s retired, no? Yes. No. Maybe. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted March 8, 2019 Share Posted March 8, 2019 (edited) 14 hours ago, sh1pman said: Musk challenge to Russians so they waste resource on an impossible mission. Edited March 8, 2019 by Xd the great Quote Link to comment Share on other sites More sharing options...
DDE Posted March 8, 2019 Share Posted March 8, 2019 5 hours ago, Xd the great said: Musk challenge to Russians so they waste resource on an impossible mission. Oh, please. It’d take them five years to react to that tweet, and that’s if they choose to. Remember, you’re dealing with the SLS Space Program here. Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted March 10, 2019 Share Posted March 10, 2019 Just so you know, it's not like fueling issues on R-7 variants haven't happened before... I was browsing the Wikipedia article "list of R-7 launches" and I came across this: 15 April 1960, 15:06 Luna (8K72) I1-9 LC-1/5, Baikonur Failure Luna 1960A Third stage premature shutdown due to ground crews forgetting to fill the RP-1 tank completely. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted March 11, 2019 Share Posted March 11, 2019 9 hours ago, Ultimate Steve said: it's not like fueling issues on R-7 variants haven't happened before... Indeed. Quote Link to comment Share on other sites More sharing options...
DDE Posted March 11, 2019 Share Posted March 11, 2019 First set of RD-107A/RD-108A test-burned on naphtil, cleared for duty and shipped. https://www.kommersant.ru/doc/3907653 Arsenal and Krasnaya Zvezda simultaneously scrub their webpages describing the US-A nuclear-powered satellites and derivative projects. This gets reported on by RIA, so... extreme incompetence in information control, or a wink and a nod? https://ria.ru/20190311/1551679328.html Ultra-dubious source, ultra-familiar behaviour: Roscosmos panel on reusable LVs declares that existing developments (Buran, BOR, Baikal) must be used while keeping abreast of potential breakthroughs, like a winged, airbreathing nuclear SSTO. Naturally, guess which part of that catches attention of people more accustomed to dodging sniper fire in Syria. http://anna-news.info/roskosmos-mozhet-sozdat-raketoplan-s-yadernym-dvigatelem/ Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted March 11, 2019 Share Posted March 11, 2019 (edited) Btw a lot of info (with many unique pictures) about Proton family and various abandoned and working projects related to UR-500/Almaz is in the "The Proton Launcher" book by Christian Lardier and Stefan Barensky. I would advice to have a look. Edited March 11, 2019 by kerbiloid Quote Link to comment Share on other sites More sharing options...
Teilnehmer Posted March 11, 2019 Share Posted March 11, 2019 1 hour ago, kerbiloid said: I would advice to have a look. Thanks! A book full of super-Kerbal contraptions! Quote Link to comment Share on other sites More sharing options...
DDE Posted March 12, 2019 Share Posted March 12, 2019 Soyuz on launch table. Blast-off slated for 22:14 MSK this Thursday, with a six-hour rendezvous trajectory. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted March 12, 2019 Share Posted March 12, 2019 (edited) Russia shows off upgraded world’s most powerful rocket engine meant for Soyuz-5 https://www.rt.com/russia/453617-new-russian-rocket-engine/ "No, we're absolutely not jealous of some other rocket engine! That other engine uses gasified propellants, can't compare!" P.S. I like this new trend of showing off new rocket engines, though. P.S.2: RT journo's are completely technically illiterate, as expected. Edited March 12, 2019 by sh1pman Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted March 12, 2019 Share Posted March 12, 2019 Those are some nifty animations for sure! Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted March 12, 2019 Share Posted March 12, 2019 Not clear: do the test counts relate specifically to RD-171MV or to RD-171 family at all. Quote Link to comment Share on other sites More sharing options...
DDE Posted March 12, 2019 Share Posted March 12, 2019 2 hours ago, sh1pman said: P.S.2: RT journo's are completely technically illiterate, as expected. I’m not seeing technical illiteracy, TBH, not on this occasion. Not much chance there, seeing as it’s probably a simple translation of the dry Energomash press release. Just regular one. In duplicate. RD-171, RT-171, RS-171, who cares!? Quote Link to comment Share on other sites More sharing options...
sh1pman Posted March 12, 2019 Share Posted March 12, 2019 15 minutes ago, DDE said: I’m not seeing technical illiteracy, TBH, not on this occasion. Not much chance there, seeing as it’s probably a simple translation of the dry Energomash press release. Just regular one. In duplicate. RD-171, RT-171, RS-171, who cares!? Quote ...The engine, which has improved overheating protection and a new fully domestically-made fuel and oxygen regulation system, weights 10.3 tons and has a thrust of over 800 kN, slightly more than the RD-171M variant... Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted March 12, 2019 Share Posted March 12, 2019 2 minutes ago, sh1pman said: 10.3 tons and has a thrust of over 800 kN, That doesn't add up. KSP engines have way better TWRs than that. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted March 12, 2019 Share Posted March 12, 2019 Just now, Ultimate Steve said: That doesn't add up. KSP engines have way better TWRs than that. Either the RD-171MV is secretly a solid-core NTR, or someone isn't good at writing technical news pieces. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted March 12, 2019 Share Posted March 12, 2019 Or they should correct the cfg file. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted March 12, 2019 Share Posted March 12, 2019 19 minutes ago, sh1pman said: weights 10.3 tons and has a thrust of over 800 kN It's just a typo. The RD-171 comes in just under 8,000 kN so this is just over. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted March 12, 2019 Share Posted March 12, 2019 8,000 kN is over 800 kN So, it's all right. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted March 12, 2019 Share Posted March 12, 2019 Anyway, I’m really not excited about this engine. Who cares if it’s the most powerful engine or not, if the rocket it’s supposed to fly on is already outdated, 3 years before its first launch. Uncompetitive, not reusable, and less capable than F9 that uses way simpler and cheaper Merlins. Why not make something better than what competitors already have? Huge lost opportunity. Same with Angara and that superheavy nonsense. I guess I know the answer, but it’s still sad. Quote Link to comment Share on other sites More sharing options...
DDE Posted March 12, 2019 Share Posted March 12, 2019 21 minutes ago, sh1pman said: Why not make something better than what competitors already have? Because it’s the SLS space program. Roscosmos, while being a for-profit company, is not competing with anyone; Irtysh is a true spherical horse in an economic vacuum, its history a political gambit upon a political gambit. Quote Link to comment Share on other sites More sharing options...
XB-70A Posted March 12, 2019 Share Posted March 12, 2019 Some sights of the final assembly and the transfer of MS-12: Quote Link to comment Share on other sites More sharing options...
sh1pman Posted March 13, 2019 Share Posted March 13, 2019 (edited) 6 hours ago, DDE said: Irtysh is a true spherical horse in an economic vacuum, its history a political gambit upon a political gambit. I wouldn’t mind political gambits if they resulted in nice rockets, not stupid outdated rockets. Now we’re stuck with this Zenit knockoff for the next 50 years. Edited March 13, 2019 by sh1pman Quote Link to comment Share on other sites More sharing options...
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