SpaceX Falcon 9

Автор ATN, 08.09.2005 20:24:10

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m-s Gelezniak

Разобраться то нетрудно, но вам же ссылки нужны... .
Так что сами.
Шли бы Вы все на Марс, что ли...

Сергей

ЦитироватьApollo13 пишет:
ЦитироватьСергей пишет:
С правой стороны на рисунке в районе критического сечения стоит блочок - не попадалось нигде для чего?
попалось
Спасибо, сей бачок называется главный топливный (керосин) клапан (ГТК), многофункциональный. Одна из линий - ГТК - кольцевой коллектор - рубашка охлаждения - форсуночная головка. С остальными линиями сложней - возможны варианты и не один. Есть линии и на рулевые машины. Но куда , сколько, по фото не определишь. Возможно где то в научных статьях есть более подробная информация, но это коммерческая информация, едва ли будет в открытом доступе.

Salo

ЦитироватьApollo13 пишет:

ЦитироватьSeerndv пишет:
А чему него КС отличается?
Кто ж нам скажет  :)
Она не паянная из трубочек, а с фрезерованными каналами.
"Были когда-то и мы рысаками!!!"

Seerndv

#13863
ЦитироватьSalo пишет:
Она не паянная из трубочек, а с фрезерованными каналами.
- не понял. Они вернулись к паянной?   :o   Или наоборот , освоили дешёвую пайку?  :oops:  
На фото КС "Мерлин-1С" она фрезерованная.
Свободу слова Старому !!!
Но намордник не снимать и поводок укоротить!
Все могло быть еще  хуже (С)

Сергей

ЦитироватьSalo пишет:
Она не паянная из трубочек, а с фрезерованными каналами.
               
                  
ЦитироватьSeerndv пишет:
- не понял. Они вернулись к паянной? :o  
На фото КС "Мерлин-1С" она фрезерованная.
Salo имеет ввиду, что выходную сверхзвуковую часть сопла из трубочек, скрепленных между собой пайкой и силовыми бандажными лентами поверх, заменили на часть огневой рубашки с фрезерованными каналами, как на участке цилиндрическая часть КС, сужение, трансзвуковая часть сопла, сверхзвуковая часть сопла до основного кольцевого коллектора для керосина.

Seerndv



- пардон, но это не КС, а Regen-Cooled Nozzle,  сопло
Свободу слова Старому !!!
Но намордник не снимать и поводок укоротить!
Все могло быть еще  хуже (С)

Сергей

ЦитироватьSeerndv пишет:
- пардон, но это не КС, а Regen-Cooled Nozzle,сопло
               
                  
Это выходная сверхзуковая часть сопла, а не все сопло. Мысленно представьте диаметр критического сечения и поймете, что есть еще сверхзвуковая часть сопла меньшего диаметра, в данном случае выполненная заодно с огненной рубашкой КС , трансзвуковой и сверхзвуковой части сопла.

Seerndv

#13867
ЦитироватьСергей пишет:
ЦитироватьSeerndv пишет:
- пардон, но это не КС, а Regen-Cooled Nozzle,сопло
               
                  
Это выходная сверхзуковая часть сопла, а не все сопло. Мысленно представьте диаметр критического сечения и поймете, что есть еще сверхзвуковая часть сопла меньшего диаметра, в данном случае выполненная заодно с огненной рубашкой КС , трансзвуковой и сверхзвуковой части сопла.
- просто речь изначально шла что это не КС    ;)

 
Свободу слова Старому !!!
Но намордник не снимать и поводок укоротить!
Все могло быть еще  хуже (С)

Apollo13

ЦитироватьJeff Foust ‏@jeff_foust  47m47 minutes ago

Shotwell: "a lot of interest" from customers on flying on reused Falcon 9. May fly two of them this year. #smallsat
Возможно в этом году будет 2 пуска б/у Фалконов-9.

Apollo13

ЦитироватьJeff Foust ‏@jeff_foust  51m51 minutes ago

Shotwell: reusability is the single most important thing we're working on right now. #smallsat
ЦитироватьJeff Foust ‏@jeff_foust  53m53 minutes ago

Shotwell: we'd like to recover the F9 second stage as well, but that may take five years or so to figure out. #smallsat

Apollo13

ЦитироватьRITSpaceExploration ‏@RITSPEX  1h1 hour agoLogan, UT

Shotwell: Finally figured out how to use chilled LOX which allows us to finally recover stages after 14 years.
ЦитироватьRITSpaceExploration ‏@RITSPEX  1h1 hour agoLogan, UT

JCSAT 14 will be static-fired as many times as possible. Estimated 8-14 times before reflying, in-between pipeline launches.
ЦитироватьRITSpaceExploration ‏@RITSPEX  55m55 minutes agoLos Angeles, CA

Building a lot of launch pads because sending the Navy out for all the landings is quite an endeavor. #smallsat @SpaceX
ЦитироватьRITSpaceExploration ‏@RITSPEX  50m50 minutes agoLos Angeles, CA

Rockets come back looking "brown or grey" but it's not burned, it's mostly just soot. There's a heat shield that goes around the engines.
ЦитироватьRITSpaceExploration ‏@RITSPEX  50m50 minutes agoLos Angeles, CA

The rocket comes back in surprisingly good shape. Interstage still shiny and beautiful after taking off tunnel covers. #smallsat
ЦитироватьRITSpaceExploration ‏@RITSPEX  50m50 minutes agoLos Angeles, CA

Engines were not refurbished because of the reuse, but some of the seals were changed to upgrade them to the current version. #spacex
ЦитироватьRITSpaceExploration ‏@RITSPEX  31m31 minutes agoLos Angeles, CA

Shotwell on Falcon Heavy direct GEO insertion, "we're working on the extended mission kit, we're working on it with longer life electronics"
ЦитироватьRITSpaceExploration ‏@RITSPEX  25m25 minutes agoLos Angeles, CA

Shotwell: "We are likely to go away from single-engine tests on Merlin, then we'll just acceptance-test the engines on the stage".


Pirat5

High-speed footage of past launches and reentries https://youtu.be/DKqY8sy3nkM  

Salo

Цитировать Jeff Foust ‏@jeff_foust  8 ч.8 часов назад  
Cook: ORS-6 will use modular bus originally developed for canceled ORS-2 mission. Launch as F9 rideshare in fall 2017. #smallsat
 
  Jeff Foust ‏@jeff_foust  8 ч.8 часов назад
Ben Cook, ORS Office: ORS-6 mission will test wind vector instrument to buy down risk for planned Weather Follow-On program. #smallsat
"Были когда-то и мы рысаками!!!"

Salo

#13873
http://spacenews.com/spacex-offers-large-rockets-for-small-satellites/
ЦитироватьSpaceX offers large rockets for small satellites
by Jeff Foust — August 9, 2016
 
A SpaceX Falcon 1 lifts off on its final flight in July 2009. The company plans to serve the smallsat market through secondary payload accommodations on its larger rockets. Credit: SpaceX
 
LOGAN, Utah — SpaceX, which retired its Falcon 1 small launch vehicle several years ago, believes it can more effectively serve the growing small satellite market through rideshare accommodations on its larger vehicles, the company's president said Aug. 9.
In a keynote speech at the 30th Annual Conference on Small Satellites at Utah State University here, Gwynne Shotwell said the company was working with companies that aggregate secondary payloads, such as Seattle-based Spaceflight, to fly on the Falcon 9 and future Falcon Heavy launch vehicles.
"We really love and appreciate working with aggregators of small satellite missions," she said. "We've got a brand-new agreement with Spaceflight for four additional flights over the next four or five years."
Spaceflight announced in September 2015 that it had purchased a Falcon 9 launch for what it called a "dedicated rideshare" mission planned for the second half of 2017. That mission will carry more than 20 spacecraft, including a lunar lander developed by SpaceIL, an Israeli team competing in the Google Lunar X Prize.
Spaceflight is also flying nearly 90 satellites as secondary payloads on its SHERPA payload adapter. SHERPA will fly with a Taiwanese satellite, Formosat-5, on a Falcon 9 later this year. Jason Andrews, president and chief executive of Spaceflight, said in an Aug. 8 presentation here that he expects that launch to take place in late October.
Shotwell said SpaceX also believes it can offer extensive secondary payload accommodations on its Falcon Heavy rocket. "There should be a lot of extra capacity on this rocket, and hopefully we will fly a lot of ESPA or ESPA-like rings underneath the primary payload to provide regular access for you all," she said, referring to the EELV Secondary Payload Adapter, a common payload interface for small secondary payloads.
Development of the Falcon Heavy has been beset by delays, she acknowledged. "Sorry we're late," she said. "This is actually a harder problem than we thought." Those delays have pushed back one early Falcon Heavy mission, carrying the Space Test Program 2 mission, with more than 30 satellites, to the third quarter of 2017.
Early in SpaceX's history, the company was seen as a solution for the difficulties the smallsat community faced launching satellites through its Falcon 1. That vehicle, as initially proposed by SpaceX, planned to launch payloads weighing up to about 500 kilograms for $6 million a launch.
However, SpaceX retired the Falcon 1, which failed in its first three missions, after the successful launch of the RazakSat satellite on its fifth mission in 2009. "We could not make Falcon 1 work as a business," Shotwell said.
At that time, she said, there was not enough demand for a dedicated small launch vehicle at that price to convince SpaceX to devote resources to it. "Falcon 9 and Dragon were much better products to pursue," she said. "I had a hard time selling the Falcon 1. The market was just not there."
A surge in interest in smallsats has changed the market for small launch vehicles, leading to plans for a number of dedicated small launchers, some with capabilities and prices similar to the Falcon 1. "Certainly the numbers, both the investment numbers as well as the number of launches, has changed dramatically, and that's what Falcon 1 did not have at the time," she said, later emphasizing that SpaceX had no plans to put the Falcon 1 back into service to compete with those new small launch vehicles.

A focus on reusability, and Mars

Shotwell also emphasized the company's efforts to make the Falcon 9 first stage reusable as another key element in its efforts to provide affordable smallsat launch services, calling reusability "the single most important thing SpaceX is working on."
As part of that work, SpaceX is test-firing one of the Falcon 9 stages it successfully landed, from the May launch of the JCSAT-14 satellite, at its McGregor, Texas, test site. That stage has already completed some full-duration static test firings. "We're going to run as many tests on this stage as we can pull off," she said. "Hopefully we'll get more than four, and maybe eight to ten of these, before we go ahead and refly."
Shotwell said there's "a lot of interest" from customers interested in flying on a Falcon 9 with a reused first stage. "We may fly two of the previously-flown hardware this year," she said.
There was also considerable interest in conference attendees on SpaceX's long-term Mars ambitions. Shotwell said the company's Red Dragon mission, which the company plans to launch as soon as 2018 to land on Mars, could accommodate smallsats as secondary payloads in the trunk section of the Dragon spacecraft. There will also be opportunities to include payloads within the Dragon itself.
As part of the company's Mars mission architecture, SpaceX is developing a new engine, called Raptor, that will use methane and liquid oxygen propellants. "We just shipped the first Raptor engine to Texas last night," she said. "We should be firing it soon."
One audience member questioned SpaceX's plans for human settlement of Mars, wondering why anyone would want to live there. "There are a lot of people on this planet that have a lot of very different ideas," she said. "I'm sure there's plenty of people who will want to go settle on Mars."
To test this, she asked a show of hands from the standing-room-only audience of those who would be willing to go to Mars on an early expedition. About five to ten percent of the audience raised their hands. "Five percent of the world's population is a lot," she said.
"Были когда-то и мы рысаками!!!"

Apollo13

https://www.reddit.com/r/spacex/comments/4x3l7a/small_sat_2016_keynote_gwynne_shotwell_spacex/

ЦитироватьCap on JCSAT-14 booster called 'variable load head'
Шапочка создает переменную нагрузку на ступень во время прожига.

ZOOR

#13875
Может, обсуждалось - 700 стр не осилю. Такой вопрос

А чего Маск выбрал практически минимальный диаметр под ступени - 70 / 3,7 = 19 ?
Вон какая глиста получилась

ЦитироватьБольшой пишет:


Я зуб даю за то что в первом пуске Ангары с Восточного полетит ГВМ Пингвина. © Старый
Если болит сердце за народные деньги - можно пойти в депутаты. © Neru - Старому

Apollo13

ЦитироватьZOOR пишет:
Может, обсуждалось - 700 стр не осилю. Такой вопрос

А чего Маск выбрал практически минимальный диаметр под ступени - 70 / 3,7 = 19 ?
Вон какая глиста получилась
ЦитироватьБольшой пишет:

 
Первая ступень имеет максимальный габарит, который можно перевезти грузовиком.

Виктор Кондрашов

ЦитироватьApollo13 пишет:
Первая ступень имеет максимальный габарит, который можно перевезти грузовиком.
А как они дома на трейлерах возят?

Искандер

Молча. Спросите американцев. Есть информация что габарит максимальный.
Aures habent et non audient, oculos habent et non videbunt

Плейшнер

ЦитироватьИскандер пишет:
Молча. Спросите американцев. Есть информация что габарит максимальный.
Если максимальный, то он должен чем-то определяться ( типа высотой эстакад, путепроводов и т.д.)
Не надо греть кислород!
Я не против многоразовых ракет, я за одноразовые!