РН Electron от новозеландской Rocket Lab

[Старый]

Вепрь Ы пишет:

Старый пишет: 
Потому что билет на автобус дешевле чем поездка на такси.

Тем не менее такси почему-то не вымирают и сосуществуют с автобусами.

Такси сущетвуют там где есть одиночные пассажиры. 

 Здорово, если всем 150 пассажирам нужно на 300х500 км. А если кому-то нужно туда, кому-то - на 250х1500, кому-то ещё куда? 

И много было таких за всю историю космонавтики? Они окупят разработку отдельного автомобиля для такси?

Вакуум для многих кубсатов - не самоцель.

 Можно писок "многих"?
Как правило запуск на ССО подходит для всех кубосатов. А на ССО ходят не автобуы, туда ходят поезда! 

Ещё есть моментик. Те у кого есть деньги делают не кубосаты а нормальные спутники. А у тех кто делает кубосаты нет денег разъезжать на такси. Им больше подходит прицепиться на буфер трамвая. 

[Чебурашка]

Поезд с маленькими спутниками, едущий на ССО

[tnt22]

http://www.rocketlabusa.com/news/updates/rocket-lab-reaches-500-rutherford-engine-test-fires/

Rocket Lab reaches 500 Rutherford engine test fires
 
Huntington Beach, California and Auckland, New Zealand January 31, 2018:

Rocket Lab, a US aerospace company with operations in New Zealand, has this month completed its 500th test fire of the orbital-class Rutherford rocket engine.

Designed and manufactured in-house by Rocket Lab, development of the 3D printed, electric turbo-pump fed Rutherford engine began in 2013, with the first test fire taking place in December of the same year. The engines attained flight heritage during Rocket Lab's first test flight in May 2017.

Спойлер

The 500th Rutherford test fire burned for a duration of 100 seconds. The milestone firing brings the Rutherford engine series to 19,000 seconds (more than 300 minutes) of cumulative firing time since the first hot fire test in December 2013.

"The Rutherford engine was designed from the beginning to be both high performing and fast to manufacture on a mass scale," said Lachlan Matchett, Vice President of Propulsion. "By enabling faster, scalable engine production we speed up production of the whole vehicle. We can print an entire engine in as little as 24 hours. This allows us to build and launch at unprecedented frequencies to democratize access to space, enabling the creation of crucial orbital infrastructure."

Rocket Lab has produced a total of 40 flight-ready engines to date, and aims to produce another 100 engines by the end of this year. The Rutherford engine's production scalability is facilitated by additive manufacturing, or 3D printed, primary components. With a 3D printed combustion chamber, injectors, pumps, and main propellant valves, Rutherford has the most 3D printed components of any rocket engine in the world.

The in-house design also features the use of electrically driven propellant pumps, rather than turbomachinery, further reducing complexity and build-time. This unique approach allows unmatched precision and control of propellent flow and a significant increase in performance through mass savings.

About the Rutherford engine:

Weighing just 35 kg each, nine Rutherford engines propel Rocket Lab's Electron launch vehicle to space powered by a fuel mixture of highly refined kerosene and liquid oxygen. Rutherford uses an entirely new propulsion cycle to create outstanding efficiency for a kerosene-oxygen engine.

Rutherford is used as both a first stage and as a second stage engine, with sea level versions on Electron's first stage producing 24 kN (5,500 lbf) of thrust and has a specific impulse of 311 s (3.05 km/s), while the vacuum optimized version operating on Electron's second stage produces a max thrust of 24 kN (5,500 lbf) of thrust and has a specific impulse of 343 s (3.36 km/s).

The Rutherford engine is named after New Zealand physicist Ernest Rutherford, a Nobel laureate famous for his work in discovering radioactive half-life and being the first to split the atom.

Rutherford engines are manufactured at Rocket Lab's headquarters in California, USA, and shipped to Auckland, New Zealand for testing before integration with the Electron launch vehicle and eventual launch from Rocket Lab's own orbital launch facility, Launch Complex-1, on the Mahia peninsula.

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[tnt22]

Caleb Henry‏ @CHenry_SN 39m ago

.@RocketLab's Daniel Gillies: next Electron launch (flight three) coming in the next few months. #Smallsat18

[tnt22]

Rocket Lab‏Verified account @RocketLab 8h ago

We recently completed a successful fit check at our Huntington Beach payload integration cleanroom of the CubeSat dispensers for this year's NASA Educational Launch of Nanosatellites (ELaNa) XIX mission. Exciting science to be done on this mission. https://goo.gl/EjJw6Y 

[tnt22]

https://www.rocketlabusa.com/news/updates/rocket-lab-completes-fit-check-for-nasa-vcls-elana-xix-mission/

Rocket Lab completes fit check for NASA VCLS ELaNa XIX mission



Early this month, Rocket Lab performed a successful fit check of the CubeSat dispensers for the NASA Venture Class Launch Service flight of the CubeSat Launch Initiative Educational Launch of Nanosatellites (ELaNa) XIX mission. The fit check was carried out at Rocket Lab's Huntington Beach payload integration cleanroom.

Спойлер

Venture Class launches aim to provide dedicated launches for CubeSats that would normally fly as secondary payloads, enabling these science missions to get exactly where they need to go on orbit.

The fit check was performed between a Rocket Lab Electron Payload Plate - the interface between Electron and the payloads - and a series of Tyvak Nano-Satellite Systems and Planetary Systems Corporation dispensers. Teams from Tyvak and Rocket Lab participated in the fit check.

Fit checks provide valuable risk reduction in payload integration by verifying physical interfaces and allowing for a dry run of installation procedures prior to the launch campaign.

The Huntington Beach Payload Integration Cleanroom is a Class 100k cleanroom located in our Rocket Lab USA Headquarters. This cleanroom is used for payloads that are processed in the United States before being shipped to their final launch site, such as Launch Complex 1 in Mahia, New Zealand. The facility will be used for the processing of the NASA ELaNa XIX payloads, which will be integrated to their dispensers in the United States before shipment to the launch site later this year for installation on Electron.

The Electron Payload Plate is a customizable interface which can support a variety of CubeSat and Microsatellite dispensers and separation systems. The Payload Plate can be entirely removed from Electron, allowing for integration to occur away from the launch site, such as in our Huntington Beach cleanroom or at a remote customer facility. Rocket Lab can accommodate both single and multipayload configurations on the plate.

The target launch date for the NASA Venture Class Launch Service ELaNa XIX mission is yet to be announced. The launch will see the following CubeSats deployed:

CubeSat: Andesite
Organization: Boston University

CubeSat: Ceres
Organization: NASA Goddard Spaceflight Center

CubeSat: STF-1
Organization: NASA Goddard Spaceflight Center

CubeSat: CubeSail
Organization: University of Illinois at Urbana-Champaign

CubeSat: CHOMPTT
Organization: University of Florida

CubeSat: NMTSat
Organization: New Mexico Institute of Mining and Technology

CubeSat: DaVinci
Organization: North Idaho STEM Charter Academy

CubeSat: Rsat
Organization: U. S. Naval Academy

CubeSat: ISX
Organization: California Polytechnic State University

CubeSat: Shields-1
Organization: NASA Langley Research Center

CubeSat: ALBus
Organization: NASA Glenn Research Center

CubeSat: SHFT-1
Organization: NASA JPL

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[октоген]

2497кг тяги, а где-то мощность электрическая насосного агрегата проскакивала?

[Дмитрий В.]

октоген пишет:
2497кг тяги, а где-то мощность электрическая насосного агрегата проскакивала?

100 лс на двигатель, вроде.

[октоген]

Выходит движок тягой 100 т потребует всего около 4000 л.с. электродвижка? Очень неплохо.  Можно замену Союзу создавать в 4.1м диаметре.

[tnt22]

Rocket Lab‏Verified account @RocketLab 1h ago

Our third #Electron launch is coming up soon (launch window dates to be announced in coming weeks). But what to call this flight...

[/li]
• NOT TESTING
• PASSED THE TEST
• BUSINESS TIME
  

[tnt22]

Rocket Lab‏Verified account @RocketLab 8h ago

A great stage one stack test completed for our upcoming third flight. Nine #Rutherford engines firing in sync is a thing of beauty.

[axxenm]

Означает ли нагнетание топлива  при помощи ЭД возможность глубокого дросселирования тяги?

[октоген]

Да, но снизу тяга будет ограничена нормальным охлаждением КС. Так что дросселировать как водородники все равно не получится.

[axxenm]

октоген пишет:
Да, но снизу тяга будет ограничена нормальным охлаждением КС. Так что дросселировать как водородники все равно не получится.

И каков нижний порог? процентов 40 ?

[Старый]

октоген пишет:
Выходит движок тягой 100 т потребует всего около 4000 л.с. электродвижка? Очень неплохо. Можно замену Союзу создавать в 4.1м диаметре.

У двигателя РД-107 тягой 100 т мощность ТНА - 4МВт. 

[tnt22]

Rocket Lab‏Подлинная учетная запись @RocketLab 13 ч. назад

Great to have @davincicubesat team lead Jessica Millard tour our Huntington Beach factory with Mission Manager Amanda Stiles. Jessica leads a team of Idaho high school students launching the Da Vinci CubeSat on Electron this year as part of our @NASA VCLS Mission. #ELaNAXIX

[tnt22]

Chris B - NSF‏ @NASASpaceflight 25 мин. назад

Chris Gebhardt (@ChrisG_NSF) has interviewed Rocket Lab CEO Peter Beck. First of two articles shortly.


Chris G - NSF‏ @ChrisG_NSF 5 мин. назад

.@RocketLab is preparing for the 1st operational flight of Electron from #NewZealand. The mission will capitalize on the successful test flight of #Electron in January, which saw the unannounced deployment of Humanity Star & the planned debut of the Curie kick-stage. #Exploration

Chris B - NSF‏ @NASASpaceflight 11 мин. назад

FEATURE ARTICLE: Rocket Lab to capitalize on test flight success with first operational mission -

https://www.nasaspaceflight.com/2018/03/rocket-lab-capitalize-test-flight-success-first-operational-mission/ ...

- by Chris Gebhardt (@ChrisG_NSF)

Спойлер

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[tnt22]

Michael Sheetz‏Подлинная учетная запись @thesheetztweetz 12 ч. назад

The @FCC revoked the license it gave Swarm Technologies to launch 4 cubesats aboard PSLV-40 in January – but Swarm launched the satellites anyway. Now the FCC is suspending Swarm's planned launch of 4 more satellites aboard a @RocketLab Electron in April

Michael Sheetz‏Подлинная учетная запись @thesheetztweetz 12 ч. назад

Statement from @RocketLab CEO Peter Beck to @CNBC: https://www.cnbc.com/2018/03/09/swarm-technologies-slammed-by-fcc-for-unauthorized-satellite-launch.html ...

[triage]

Не знаю было или нет

 http://spacenews.com/surge-of-new-space-companies-has-impressed-even-veteran-industry-observers/

Surge of new space companies has impressed even veteran industry observers
by Jeff Foust — March 7, 2018

This article originally appeared in the Feb. 12, 2018 issue of SpaceNews magazine.
....
For example, a growing number of large corporations have established their own venture capital arms used to make strategic investments that can offer companies not just financial returns but access to promising technologies and products.

One such fund is Lockheed Martin Ventures, which has invested in Rocket Lab. "We need low-cost access to space and high potential frequency of access, which would open different mission types," said Chris Moran, general manager of Lockheed Martin Ventures. "The U.S. government was pushing us to have that kind of access, so we made that investment in Rocket Lab in their Series B."
....

[Дем]

axxenm пишет:
И каков нижний порог? процентов 40 ?

Маск заявляет дросселирование Раптора до 20%