The thread for space cadets!

Apologies. It was remiss of me to omit the main reference I relied upon in my opinion:
Eckert, Michael, "Turbulence Before 1961", http://www.turbulence.ens.fr/IMG/pdf/review_eckert.pdf

I have a lot more, but they are old mimeographs and Gestetners of papers produced at The Hermann Göring Research Institute, complete
with official swastikas and other creepy sigils.
 
I dont know much about him but I do remember how he blew a fuse when some cave expert dismissed his submarine idea for rescuing some kids in SE Asia who got stuck underground by floodwaters. He actually accused the guy of being a pedophile.
 
radiator , as no one has ever managed to keep a clean wing in service.

Sudden boundary layer transition from laminar flow to turbulence depends on the size and nature of the accumulated materials on the wing.
Ice accretion can be catastrophic; a few bird spatters and dirt particles won't have anywhere near as great effect.

US engineers got many significant factors determining total performance under control.
Airfoil shape, wing planform, wingtip shape, as well as radiators, control surface size and placement, material selection, weight distribution, pilot training, and dozens of other factors.
Ascribing it to one factor like "radiator" is naive. I honestly can't imagine an engineer or scientist making a claim that strong.
 
then ı would readily assume they have since succeeded after 1980s when it could readily written in Air International that laminar flow in service was not achieveable . Mustang looks seriously cool and it was a revelation and what not as it can be gauged from pages of Flight of 1942 or thereabouts claiming it was expressly designed for the British under German kind of things . But the thing is , it came when the Luftwaffe was running out of pilots rather fast , factory output clearly favoured the Allies and P-47 was strictly banned to have the Berlin tanks , the one that sorely enabled the P-51fly all the way to the said city and for first part handling wasso atrocious that it would never make the grade in any Western Airforce in peacetime . Which enabled it to catch German gaggles in places where they were previously safe , matching that with airfield strafing attacks and the whole lot and its agility was rather "poor" but better than the 190A which lacked power ar bomber altitudes and 109Gs which simply had no place in the picture after 1942 but for the thing that the Germans had nothing else , especially for the bomber altitude . Thanks for proving am not an engineer or scientist , now that am just a turbolazer guy commanding the Starfleet Academy .

edit : USB problems once again . In which .rtf file of mine just disappeared . Well , ı will also drive Rolls Royce to bankrutpcy in a politely hasty way in case ı do not get to post freely at places people will know by noon zulu time today . Now that am perfectly capable of writing the same thing 10 million times over .
 
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then ı would readily assume they have since succeeded after 1980s when it could readily written in Air International that laminar flow in service was not achieveable.

No argument: laminar flow over the entire wing surface is unachievable. It is the extent of laminar flow (measured from the leading edge) before transition to turbulent that is important, as is whether the boundary layer remains attached. When boundary layers detach from a wing surface, the result is usually an almost total loss of lift, and hence sudden stall.

Turbulent boundary layers produce less drag than laminar at high Reynolds numbers. The best example is probably golf balls. The dimples promote transition to turbulence from the laminar flow which exists near the front of the ball. (Ignoring for sake of example, the huge complexity due to spinning etc.) If laminar flow was maintained over the entire surface of a (smooth) golf ball, drag would be much higher, and the ball would not travel as far for the same applied force.
 
no , ı will really do it .
 
Imagine how much more he could accomplish if he'd get out of his own way.

He could achieve more in the sense of taking more credit for work he didn't actually do.
How much of the product development and design is due to fElon, and how much is due to many other engineers and scientists working for him?

Have a pic.
nascha.jpg
 
Ok, but remember the 1st rule of aviation - take-off is optional.

while the post above this lacks context and stuff , now that there has been an answer there are also various options of coming down , some of them include pieces and flames . And they don't have to happen to monkeys and mongrels all the time . People who have been in CFC before your joining might remember the readiness since 2011 and even before that .

so do ı get to post the full thing in which we learn a Rory Clarkson is the guy we should lick shoes of ?
 
He could achieve more in the sense of taking more credit for work he didn't actually do.
How much of the product development and design is due to fElon, and how much is due to many other engineers and scientists working for him?

Have a pic.
View attachment 520013
Oh sure, I understand that. It was more of a rhetorical point that I believe he creates more challenges for his companies than he solves at this point.
 
while the post above this lacks context and stuff , now that there has been an answer there are also various options of coming down , some of them include pieces and flames . And they don't have to happen to monkeys and mongrels all the time . People who have been in CFC before your joining might remember the readiness since 2011 and even before that .

so do ı get to post the full thing in which we learn a Rory Clarkson is the guy we should lick shoes of ?

Some of your sentences didn't parse, but I do understand that you're willing to lick boots. :)
There are 52 citations of his work over 25 years, which is a very low rate.
Stay classy!
 
A French government auditor said that the Ariane 6 (the new European rocket under development) is at risk of having its lunch eaten by Falcon. The Ariane 6 is essentially an upgraded Ariane 5 with a cheaper manufacturing process but it's still quite a bit more expensive than the Falcon. And they way they arrange launches with it - two satellites at a time , one large and one medium - is a fraught business model with declining large satellite orders. Even when customers want to buy flights, lining their satellites up with other customers of the right size and schedule is challenging even when business is good. Now that everyone is moving to smallsats, that is getting harder to pull off and at the end of the day it offers little cost savings for customers given how expensive the rocket is to begin with.

Arianespace did unveil a new suborbital, reusable rocket test program called Themis that is much like SpaceX's grasshopper test rocket. In fact, the whole design of their test platform looks a lot like Falcon and the leader of Arianespace made no bones about copying what they can see works for their American rivals.

One thing that has held back rocket science is the obsession with heritage. Because rockets are so expensive it's hard to take risks and try new things you aren't sure are going to work. But SpaceX has provided that heritage now and broken the logjam.

https://arstechnica.com/science/201...able-rocket-that-looks-a-lot-like-a-falcon-9/

ArianeWorks-Themis-Vehicle.jpg
 
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One thing that has held back rocket science is the obsession with heritage. Because rockets are so expensive it's hard to take risks and try new things you aren't sure are going to work. But SpaceX has provided that heritage now and broken the logjam

Heh, you were talking about this very thing months ago.
The copies arrived really fast!
 
Heh, you were talking about this very thing months ago.
The copies arrived really fast!
Ha! I'm not just pissing at the wind. :D

And the Chinese are copying even more aggressively. They have maybe half a dozen start ups with government backing trying to figure out reusable rockets on top of the major state-owned corporations. All of them are building or touting designs for some version of the Falcon. it's all so very exciting!
 
first , Friday's rant :


Spoiler :


new Turkey at its finest . Can be shown through the personal experience . House ı live in is in a spot that would have been a full village (like a hundred years ago) and the guy or gal chosen in local elections would be a "village headman" back then . So , here is the guy on his bicycle , looking at the work of Municipality workers cutting down trees in the park in front of the house . Nothing offensive / even if he is not running this year , he still has to be around , as a reputation thing . Told the trees are dead and a hazard and no objection and he leaves . Some guy is collecting the wood and carrying them to his car and emboldened by each other the some guy and the guy who's cutting them down start talking . Oh , it was only the headman's old age , otherwise he would be shown his place , who does he think he is , it's the "nation's garden" . Which was what parks were called back in the day , when evil Kemalism had the treacherous task of creating a fake and false language . But when it becomes the nation's garden , no one can dare ask anything and the "profits" are for the Nation , the one that votes for the Party . Hence , most ordinary people will believe the garbage that Rolls Royce will no longer work on the Quantum Fighter Experimental , because New Turkey , as soon as it gets the pieces and bits , will not respect the patents and will market the British engine as its own . QFX , you know , Qatar's blindingly successful fighter jet being made in Ankara .


though ı trust the cadets here know the truth . That America does not want to play with a shipload of Xenomorphs , despite knowing it very well that it's just an Hollywood invention , a guy in a rubber suit , even .


when this idiocy began in earnest , the word was it was to be a F-22 clone . SAAB definitely gave it up , after being told only once , too , that it would be seriously impertinent to develop their otherwise cool Gripen and America could at least claim a semi-compatibility in range and whatnot and whatever , defeating Iran being Pentagon's wet dream . And , oh my , that's a big country ... So , the Brits arrive and despite the advice (from across the Pond to boot) start claiming they are here to teach and we hear the name of a Clarkson who has clearly told bunch in Ankara to be realistic . Which is even celebrated in some web forum , which gives me hypertension whenever ı surf it . RR clearly wants its engines used and they are to be limited to 20 000 pounds of thrust , so that the QFX will lack stuff and hence will be have to be sized down and hence will be Gripen II or maybe a New Tejas , because that would be real funny . Lockmart's ban against me was beaten only because how New Turkey was gloriously failing to conquer Syria and maybe it would be good to claim that America was not intenting to kill us all and a whole ton of cr_p like that . Icy stare can do much , if you can back it up with phasers . BAe ban came down crashing heavily , 'cause ı had the temerity to claim that QFX was being sized down . In a country where everything is bigger . Of course , they claim they don't know what ı am talking about , am a lunatic , am a fool that speaks nonsense about conspiracies and even their company trolls mention me around .

soo , what happenz now ? Oh my , oh my . This Rory Clarkson guy , on the newspaper . Because they have turned down A-K-P (because the Party would take their pants , in addition to their shirts) and because America has opted to be good with their so called "allies" , like those who marched to Pyongyang after they were intentionally left behind to the mercy of the Chinese in 1950 . For some reason Turkish newspapers love to tell this North Korean military museum depicts American flags on the ground covered with mud , while the Turkish flag they captured back in the day is neatly folded in some corner . Hence F-110 is an option , now that we have been doing that since 1985 or whatever in that Eskişehir engine factory . So , this Clarkson , despite possibly being the guy whose shoes we would have to lick in person so that London would give New Turkey a over-weight , over-late , over-expensive and over-silly looking plane to insult the Republic , because ı don't know , this is how the world works ? So , the guy has heroically created a computer programme that tracks volcanic ash in the sky and the next time Iceland pulls a trick and soots some entire hemisphere with an eruption , those airliners using it will profit and those who don't will not . Offering something to monkeys , now , something to mongrels ? And of course it will take a full year , if ever , for the answer to appear .

see , even before ı was born RR was about to conquer the world with new stuff they had devised . Didn't happen that way and the company bankrupted in 1971 . Save stuff on USBs and rarely attach one to the laptop these days as the 3 ports are like dying , due old age so can't follow trade magazines as ı maybe should , but apparently they are confident enough to overcome some "strength" issues with their latest . As such when ı have been adding to my silliness with claims that 9 armoured will parade down Bruselles , that a Red and White flag will be planted on top of the German Parliament -Red Army banner style- with Berlin in ashes or Berlin not in ashes , that BAe will not survive the rationalisation of European manufacturers and that even the City will move out of London , you know , like for decades , is this for real ? Noon Zulu time today [which was March 8th , 2019], ı will be posting free and Rolls Royce's demise will not be a fitting marker for the end of the Hydrocarbon Era .



P.S. Am pretty sure that this post should not be liked .
 
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Some of your sentences didn't parse, but I do understand that you're willing to lick boots. :)
There are 52 citations of his work over 25 years, which is a very low rate.
Stay classy!

second , this must remain seperate , now that we wouldn't want to give our friend an aura of being RR's man on the spot . ı don't know because because like of thing .

so good of him . Them citations . ı will be extremely credible as soon as the first starship arrives in orbit . Do ı look concerned that it won't ? Forum knows r16 as the kind of the guy who says Trump gave New Turkey to Theresa May to cover the costs of Brexit and nobody asked me . That "nobody would have asked me" surprises no one . Today is also the second anniversary of a crash of a bizjet in Iran where the same newspaper rushed to blame it on the engines , only because there are those who have seen Kurds are not what they were dreamed to be and want to slow down on the genocide and putting an extra layer of what might be acceptable , you know for the duration . The newspaper instead chose to declare no woman can ever pilot a plane anyhow . You know , despite the obstructions then like prevalent .

licking shoes ? Looking forward to it , as life is indeed slow these days . The Australian SAS will be around , too ?

PS. Am pretty sure that this post should not be liked either .
 
I saw this article from the NYT and got excited about it. Unfortunately, the article is extremely short and is mostly pictures. They're not even good pictures. Lame.


Anyways, Russia has been throwing shade at SpaceX. Roscosmos refused to sign off on the Crew Dragon launch and went it arrived, they reported high concentrations of isopropyl alcohol in the station's air which was neither really unexpected nor dangerous nor necessarily caused by Crew Dragon. They put out a congratulatory text where they gave NASA 100% credit for the flight in English while the Russian version of the same message had entirely different text. It seems the Russian-language text was a lot less flattering but I haven't seen much on the text itself, just references that it exists. The head of Roscosmos also took a dig at SpaceX's new Raptor engine and insinuated that Elon doesn't know what he's talking about when he speaks on rocket engines. I am not one to defend Elon, particularly when we're discussing the things he says on social media, but he definitely knows what he's talking about when it comes to rocket engines.

The butthurt from Roscosmos is palpable and foolish even given how much of the Russian space program is underwritten by American taxpayer dollars. The cost of seats to the ISS have skyrocketed in recent years as the Russians have figured out just how much their services are worth while state budgets have continued collapsing. It's really not wise to throw shade at other launch providers when you still haven't fully recovered from your own very recent and very public failures and you are dependent on the nations those launch providers come from for funding.

Or maybe I'm reading too much into this? I'm curious what my Russian friends take is on this spat? Is it even talked about in Russia? I can't say it's really overblown here because it's not front-page news but all the decision makers in industry and government here are definitely watching and talking about it.
 
Or maybe I'm reading too much into this? I'm curious what my Russian friends take is on this spat? Is it even talked about in Russia? I can't say it's really overblown here because it's not front-page news but all the decision makers in industry and government here are definitely watching and talking about it.
Can't say much about it. It was in the news, of course, several bloggers also wrote about it. Generally, people say we've got a new competitor and Roscosmos will have to work better. Someone also said Rogozin was a bit reluctant with the congratulations, but I can find his tweet in Russian:
https://twitter.com/roscosmos/status/1104025378513920000

It says:
"Dear colleagues Jim Bridenstine and Elon Musk! On behalf of Roscosmos, I congratulate you with the successful completion of first test flight of a new spaceship. Creation of alternative space transport systems which can go to the ISS, guarantees stability and safety of the station. I express hope for the development of international cooperation in space."
 
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