SpaceX Falcon 9

[opinion]

Max Andriyahov пишет:

Now we just need Mr. Steven to catch it

это от миссии TESS?

У спейсов теперь есть свой самолет, для сопровождения/съемок на высоте или это сфотографировано с поверхности?

Самолет для этого не нужен, достаточно дрона. Конкретно этот снимок мог быть сделан откуда угодно, в том числе с корабля.

[Max Andriyahov]

Эволюция "девятки" с картинками
http://theclimategap.com/falcon9-evolution/

[tnt22]

TJ Cooney‏ @TJ_Cooney 2 ч. назад

I made a #Falcon9 Block 5 vs block 4 comparison shot, special thanks to @Craig_VG for merging @spiel2001's images. #spacex

[tnt22]

Block 5, 5008px × 14992px, 4490668 B

https://img.novosti-kosmonavtiki.ru/142348.jpg

[Max Andriyahov]

SpaceX сегодня (6 мая по калифорнийскому времени) - 16 лет. "Незаметно дети подросли"

[Georgea]

Max Andriyahov пишет:
SpaceX сегодня (6 мая по калифорнийскому времени) - 16 лет.

Круто!
Тут на днях на одном форуме один чел утверждал, что Маск в принципе не может быть конструктором, потому что у него "опыта нет"   

[tnt22]

https://spaceflightnow.com/2018/05/07/first-launch-of-enhanced-version-of-spacexs-falcon-9-set-for-thursday/

First launch of enhanced version of SpaceX's Falcon 9 set for Thursday
May 7, 2018 | Stephen Clark


SpaceX's Falcon 9 rocket, featuring reusability and reliability upgrades, rolled to pad 39A at the Kennedy Space Center last week for a static fire test. Credit: SpaceX

The launch of Bangladesh's first communications satellite on top of a new version of SpaceX's Falcon 9 rocket is set for Thursday, officials said Monday, after a data review following a hold-down engine firing last week.

SpaceX confirmed the target launch date in a tweet Monday, and the launch window Thursday opens at 4:12 p.m. EDT (2012 GMT) and extends until 6:22 p.m. EDT (2222 GMT).

Спойлер

Launch crews accomplished a hotfire test of the Falcon 9 rocket, without its satellite payload on-board, Friday at pad 39A at NASA's Kennedy Space Center in Florida. Workers lowered the Falcon 9 horizontal Saturday in preparation for rollback to a nearby hangar, where the Bangabandhu 1 communications satellite will be attached to the rocket's second stage.

The fully-assembled launcher will be rolled out to pad 39A again this week in preparation for Thursday's launch.

The upgraded Falcon 9 rocket, known as the "Block 5" configuration, features changes that SpaceX says will make the launcher's first stage easier to reuse multiple times with minimal refurbishment. There are also safety modifications, including redesigned helium pressurant tanks to eliminate the cause of a Falcon 9 rocket explosion on a Cape Canaveral launch pad in 2016, which destroyed a commercial communications satellite before liftoff.

...

SpaceX has not published any written information about the Block 5 upgrades, but company executives have made several statements about the modifications leading up to the mission.

"Block 5 basically summarizes all that we learned on reusability," said Hans Koenigsmann, SpaceX's vice president of build and flight reliability, in a briefing with reporters last month. "Whenever we recover a booster and then it goes through refurbishment, we find things that are giving us ... lessons for the next block. In this case, we tried to summarize all of these lessons learned into a booster that then is able to fly, and be recovered and fly again multiple times without a lot of refurbishment.

"That's basically the key thing on Block 5," Koenigsmann said. "It's a reliability update that combines reliability and reusability."

One of the major changes on the Block 5 version of the Falcon 9 is the addition of more resilient heat shield material at the base of the rocket's first stage, according to Koenigsmann.

SpaceX officials have said rocket boosters based on the new Block 5 design can be reused 10 times with little rework between missions, and potentially up to 100 times with refurbishment. First stage boosters from the previous version of the Falcon 9 rocket have only been flown twice.

Gwynne Shotwell, SpaceX's president and chief operating officer, said the Block 5 version of the Falcon 9 rocket also features a performance enhancement, but SpaceX has not detailed how much more the new Falcon 9 configuration can haul into orbit. There is a redesign to make the engines easier to reuse on multiple flights, and the Block 5 version of the Falcon 9 will also incorporate changes to meet NASA safety requirements for launches with astronauts heading for the International Space Station.

"Block 5 is the last big spin on Falcon 9, and it's largely driven by the upgrade that we needed to make for the commercial crew program, as well as national security space launch requirements," Shotwell said during a question-and-answer session with reporters last year.

NASA awarded contracts to SpaceX and Boeing in 2014 to ferry astronauts to and from the International Space Station. SpaceX's Crew Dragon capsule will take off on Falcon 9 rockets from the Kennedy Space Center, and the company plans an orbital test flight with two astronauts around the end of this year, although NASA officials expect the first crewed demonstration flight in 2019.

SpaceX engineers also added a permanent fix on the Block 5 upgrade to resolve a concern with turbine wheel cracks inside the Merlin engine's turbopump, and new helium tanks that are not susceptible to pooling frozen liquid oxygen and friction that led to the explosion of a Falcon 9 rocket on the launch pad in 2016.

"There is a performance upgrade here as well, largely to get more margin for (those) very demanding customers," Shotwell said. "There's some manufacturing improvements. We've addressed the turbine wheel issue (on Block 5). There are probably 100 or so changes on that vehicle."

Block 5 is the most significant upgrade to the Falcon 9 rocket since SpaceX debuted the "full thrust" configuration in December 2015, which was the first time the company used super-chilled, densified RP-1 kerosene and liquid oxygen propellants.

Since then, SpaceX has flown beefed up titanium grid fins to replace the single-use aluminum steering wings used during the descent of the Falcon 9's first stage. A Falcon 9 launch from California in February debuted a slightly larger payload fairing. Both enhancements are expected to regularly fly on Falcon 9 Block 5 missions.

In an interview on "The Space Show" online radio program last summer, Shotwell said SpaceX re-qualified valves to operate in more extreme conditions and for longer durations on Block 5 missions.

The Block 5 also introduces new landing legs designed to be retracted without removing them from the rocket. The interstage structure between the first and second stages is also black, not white as in earlier Falcon 9 rockets.

The first stage's engine section, known as the "octaweb," is bolted to the bottom of the booster on the Block 5 configuration, according to statements made by SpaceX officials in recent months. The octaweb arrangement, which sets the first stage's nine Merlin engines at the bottom of the rocket and routes liquid propellants to the powerplants, was welded to the rocket on earlier Falcon 9 designs.

[свернуть]

[Seerndv]

"Whenever we recover a booster and then it goes through refurbishment, we find things that are giving us ... lessons for the next block. In this case, we tried to summarize all of these lessons learned into a booster that then is able to fly, and be recovered and fly again multiple times without a lot of refurbishment. 

- да, собственно, и как тут не согласиться. 

[Max Andriyahov]

Новая сеть на Мистер Стивен

[Dr.Cox]

Georgea пишет:

Max Andriyahov пишет:
SpaceX сегодня (6 мая по калифорнийскому времени) - 16 лет.

Круто!
Тут на днях на одном форуме один чел утверждал, что Маск в принципе не может быть конструктором, потому что у него "опыта нет"  

И вообще, так прикольно читать первые страницы этой темы...

[Зловредный]

НННШ, paper rocket...

[tnt22]

Max Andriyahov пишет:
Новая сеть на Мистер Стивен

Другой ракурс

TESLARATI‏ @Teslarati 5 ч. назад

SpaceX's Falcon 9 fairing-catcher-boat Mr Steven spotted with an upgraded net -

https://www.teslarati.com/spacex-recovery-boat-mr-steven-new-net-falcon-9-fairings/ ...

[Искандер]

tnt22 пишет:

Max Andriyahov пишет:
Новая сеть на Мистер Стивен

Другой ракурс

TESLARATI ‏ @Teslarati 5 ч. назад

SpaceX's Falcon 9 fairing-catcher-boat Mr Steven spotted with an upgraded net -

 https://www.teslarati.com/spacex-recovery-boat-mr-steven-new-net-falcon-9-fairings/ ...

 

Толку, если в неё ещё попасть нужно. А тут как раз тот случай, что в ветренную погоду, с порывами, а над океаном такое часто,  это будет проблематично. Садили бы на воду и не мучились. Разве соль отмыть это большая проблема?

[Сергей]

Искандер пишет:
Садили бы на воду и не мучились. Разве соль отмыть это большая проблема?

Отмыть проблем нет, но композиты, особенно после силовых нагрузок - микротрещины, могут быть гигроскопичны и терять часть прочности - как потом повторно использовать?

[tnt22]

Pauline Acalin‏ @w00ki33 24 ч. назад

A couple comparisons of Mr Steven's old vs new net.

[tnt22]

Chris G - NSF‏ @ChrisG_NSF 46 мин. назад

From @elonmusk... Goals with Block 5 - Really it's the 6th iteration of Falcon 9 - This will be last major version. - There will be small improvements/minor changes from here for manufacturing and reusability. - Up to 300 more flights of Falcon 9 Block 5 before retirement.

47 мин. назад

Reflying a single Block 5 within 24hrs "as early as next year," says @elonmusk just now.

45 мин. назад

Block 5 exceeds all NASA requirements for crew. And meets all Air Force requirements. "Goal is to be most reliable rocket ever built." - @elonmusk

46 мин. назад

Elon thinks they can get even more power out of the engines over what will debut today. #Block5 #Falcon9

45 мин. назад

Stage 2 has the Block 5 engine today, but will operate like a Block 4 engine on this flight. #Falcon9 #Block5

44 мин. назад

Elon talking about how all 9 engines on #Falcon9Block5 are in contained bays. In theory, one engine could have a "bad day" and the other 8 would be completely unaffected.

42 мин. назад

Titanium grid fins are now standard and what will be used going forward. Can withstand 2,000 degrees F temps. #Falcon9 #Block5

39 мин. назад

Fairing 2.0 is on this vehicle. It will not be recovered on this flight because the recovery boat is only in California right now. #Block5 #Falcon9

39 мин. назад

SpaceX will start gathering reentry data on Stage 2 over the next few upcoming flights. #Flacon9 #Block5

[tnt22]

Chris G - NSF‏ @ChrisG_NSF 40 мин. назад

Elon confident that full reusability of the Second Stage is achievable.

39 мин. назад

Propellant only cost between $300,000 and $400,000 per launch. #Flacon9 #Block5

Loren Grush‏Подлинная учетная запись @lorengrush 40 мин. назад

Musk: Booster is 60 percent of cost, upper stage is 20, fairing is about 10 percent, 10 percent associated with the launch itself

Chris G - NSF‏ @ChrisG_NSF 38 мин. назад

"We expect no unnecessary action taken between flights - just like an aircraft." Getting it back, retract legs, go to pad, attach Stage 2, attach payload, go to pad, fuel, launch. #Falcon9 #Block5

35 мин. назад

Late this year, we should start seeing good reflights of 3rd and 4th times for Block 5

By end of next year, we should start seeing Block 5s reaching their 10th reflight.

34 мин. назад

Human-rated rockets have to be overdesigned by 40% to meet crew safety requirements. #Falcon9 #Block5

Eric Berger‏Подлинная учетная запись @SciGuySpace 31 мин. назад

"I'm stressed," Musk says. Getting an orbital rocket to work is very hard. Getting one that can re-fly 100 times is "crazy hard."

Chris G - NSF‏ @ChrisG_NSF 28 мин. назад

About 30-50 Block 5s are planned. Dependent on how many customers demand to launch on a new rocket. #Flacon9 #Block5

22 мин. назад

Right now, flight-proven F9s are priced at $50 million USD. New boosters are $60 million USD. #Falcon9 #SpaceX

[tnt22]

https://spaceflightnow.com/2018/05/10/falcon-9-bangabandhu-1-mission-status-center/

Updated: 05/10/2018 23:24 Stephen Clark

T-minus 82 minutes and counting. Elon Musk, SpaceX's founder and chief executive, just spoke with reporters about the maiden flight of the Falcon 9 Block 5, the last major upgrade of the company's workhorse rocket before the debut of a giant new booster dubbed the Big Falcon Rocket in the 2020s.

Спойлер

"This will be the last major version of Falcon 9 before BFR," Musk said a few minutes ago. "We expect this to be a mainstay of SpaceX's business. We think (it) will probably wind up with something on the order of 300 flights, maybe more, of Falcon 9 Block 5 before retirement."

He said the Block 5's first stage booster is designed to fly 10 times "with no scheduled refurbishment." With "moderate scheduled maintenance," Block 5 first stages could be capable of 100 missions, Musk said.

"Our goal, just to give you a sense of how reusable we think it will be, we intend to demonstrate two orbital launches of the same Falcon 9 vehicle within 24 hours no earlier than next year," Musk said. "It's going to take some time because we're going to be careful and deliberate about this."

Musk said the most important changes to the Block 5 address NASA human-rating requirements, ahead of the planned launches of astronauts to the International Space Station on Falcon 9 rockets beginning late this year or some time in 2019.

"The intent is for (Falcon 9 Block 5) to be the most reliable rocket ever built," Musk said. "That is the design intent ... I hope today doesn't punish me for these words, but that is certainly the intent, and I think our most conservative customers would agree."

The rocket's modifications also make provide a performance boost.

There's an 8 percent increase in sea level thrust from the Falcon 9's nine Merlin first stage engines, up to around 190,000 pounds of thrust each, Musk said. The upper stage's single vacuum-rated Merlin engine on Block 5 can generate 220,000 pounds of thrust, but will be throttled back to 210,000 force-pounds on today's mission.

"Both the efficiency of the engine and thrust of the engine have increased, (without) any material change to the mass of the engine. The thrust-to-weight ratio is truly incredible at this point. It was already the highest thrust-to-weight engine in the world."

[свернуть]

[tnt22]

https://spaceflightnow.com/2018/05/10/falcon-9-bangabandhu-1-mission-status-center/

Updated: 05/10/2018 23:44 Stephen Clark

Musk also addressed changes to the outer coating of the rocket, aimed at better shielding the first stage from extreme re-entry temperatures.

Спойлер

"We also have a lot of new thermal protection technology," Musk said. "If you look, aesthetically, there's the black interstage. That is the structure that joins the upper and lower stage, as well as the raceways, the landing legs, they all use a new thermal protection material developed at SpaceX which is highly resuabile and does not require paint. It's hydrophobic. It does not trap water. This was quite a challenging thing to do.

"I kind of like the aesthetics of it more," he said. If you look back at the old Falcon 1 rocket, I really like having the black interstage. The interstage is made of carbon fiber. It adds a different aesthetic to the rocket. Obviously, aesthetics are a minor factor in designing a rocket."

The octaweb, a structure which contains the first stage's nine engines at the base of the rocket, is also made of a higher-strength aluminum. It's bolted on the base of the Falcon 9 Block 5, while it was welded to the booster on previous versions of SpaceX's workhorse vehicle.

"It also has quite a bit of thermal protection on the inside in case of an engine fire or something like that, so that it does not melt the octaweb."

The first stage's four landing legs also sport changes.

The locking mechanism that kept the legs deployed during the booster's final descent and post-flight processing has been removed. The landing gear now has an internal locking system, Musk said.

""Opening the landing gear and closing the landing gear is now a very easy thing to do, whereas previously it required a couple of hours to re-stow the landing gear. That can now be done with an actuator."

The heat shield attached to the bottom of the rocket near the booster's engine section has also been beefed up.

"We replaced the old composite structure with a high-temperature titanium structure to support rapid reuse," Musk said. "The base heat shield will also be, in some parts, actively cooled with water."

He said data crunched from past Falcon 9 flights indicated that some parts of the base of the rocket exposed to super-hot temperatures during the rocket's hypersonic re-entry needed better protection.

"You kind of have to use a high-melting point material, a high-temperature material, plus active water cooling in certain places on the base of the heat shield."

To sum up the Block 5 upgrades, Musk said the new Falcon 9 configuration is a "bit better in every way."

"It has a better flight computer, engine controllers, a new, more advanced inertial measurement system."

Other improvements that will fly regularly on the Falcon 9 Block 5 have already been demonstrated during past Falcon 9 missions. Those include a new-generation payload fairing, which covers satellite payloads during launch, to make the shroud recoverable and reusable. Titanium grid fins, which likewise have already made their debut on previous Falcon 9 missions, will fly on every Block 5 launch, replacing aluminum steering winglets used on descent that were susceptible to heat damage.

[свернуть]

[tnt22]

Elon Musk Discusses New SpaceX 'Block 5' Rocket

AmericaSpace

Опубликовано: 10 мая 2018 г.

- http://www.americaspace.com
- http://www.facebook.com/AmericaSpace.org
FULL COVERAGE - http://http://www.americaspace.com/li...

As the launch preparations for the Bangabandhu - 1 were underway Elon Musk took time out to discuss the re-usability of the Falcon 9 rocket and his vision of a fully recoverable and reusable rocket. Not only that he expects to be able to launch land and launch again the same day.

(49:35)