РН Electron от новозеландской Rocket Lab

Автор Тангаж, 05.03.2015 17:53:41

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silentpom

ЦитироватьКомодский Варан пишет:
Разница 12%. Но даже с форсированным утяжелённым Кестрелом массовое совершенство вытеснительной ступени Фалькона будет выше, чем у второй ступени электрона.
а ничего что вторая ступень фалкона сама по себе не летает? сил оторваться от земли нет. а чтобы взлететь нормально (и скромно с 500 кг сверху) ее надо тягу усилить в 2.2 раза. и какое для этого должно стать давление и толщина стенок - хз. а в реальности помимо груза надо бы еще вторую ступень тянуть, так что не 2.2 а все 2.5

Андрей Суворов

Цитироватьsilentpom пишет:
ЦитироватьКомодский Варан пишет:
Разница 12%. Но даже с форсированным утяжелённым Кестрелом массовое совершенство вытеснительной ступени Фалькона будет выше, чем у второй ступени электрона.
а ничего что вторая ступень фалкона сама по себе не летает? сил оторваться от земли нет. а чтобы взлететь нормально (и скромно с 500 кг сверху) ее надо тягу усилить в 2.2 раза. и какое для этого должно стать давление и толщина стенок - хз. а в реальности помимо груза надо бы еще вторую ступень тянуть, так что не 2.2 а все 2.5
О чём это вы? Сравнивается 2-я ступень со 2-й ступенью. И тяговооружённость у обеих ниже единицы, и размерность сравнимая. Но у Фалькона-1 вытесниловка, а у Электрона - ЭНА. Со сбрасываемой батарейкой :)

silentpom

не заметил, что вторые. но по размеру получается 

2ая ступень электрона более чем  2 раза меньше фалконовской
1ая ступень электрона  - в 1.75 раза больше второй ступени фалкона

Комодский Варан

ЦитироватьFormatik пишет:
ЦитироватьКомодский Варан пишет:
Итак, начнём сверху.
Массовое совершенство второй ступени: 250/(250+2150) = 0.104.
Массовое совершенство второй ступени Фалькона-1 (вытесниловка, та-же топливная пара): 360/(360+3385) = 0.096

Как видим, простая вытесниловская ступень с алюминиевыми баками (даже не Al-Li) выигрывает у супер-пупер навороченной дорогущей композитной ступени с электронасосами по массовому совершенству, но проигрывает всего лишь на 6 секунд по УИ. Вопрос: нахрена тогда оно надо?

Первая ступень:
Массовое совершенство: 950/(950+9250) = 0.093.
Сравним её с композитной первой ступенью BA-2, заправленной ЖК и керосином: 45195/(45195+573000) = 0.073.
Вытеснительная первая ступень на той-же топливной паре, изготовленная из Al-Li сплавов будет иметь массовое совершенство около 0.1, проигрыш в УИ составит не более 10 сек, а при использовании соплового насадка проигрыша в УИ вообще не будет.

Так что, ваши электронасосы вместо ТНА - полная фигня.
А откуда у Вас такая информация по массам F1? Юзер гайд говорит другие цифры.
http://www.spacelaunchreport.com/falcon.html

zandr

http://www.rbc.ru/rbcfreenews/5920fb159a79474c8e041e54
ЦитироватьНовая Зеландия планирует начать свою космическую программу
 Компания Rocket Lab в Новой Зеландии планирует открыть собственную космическую программу. Об этом сообщает Associated Press.
По данным издания, компания на прошлой неделе получила официальное разрешение на проведение трех испытательных пусков, первый запуск запланирован на 22 мая. По словам министра экономического развития Саймона Бриджеса, этот шаг для страны ​стал действительно «впечатляющим».
Rocker Lab ориентируется на доставку небольших устройств, некоторые из которых не больше мобильного телефона, на низкую околоземную орбиту (НОО). Такие спутники будут использоваться преимущественно для предоставления услуг интернета. Для пусков будут использовать ракету-носитель Electron (РН), которую специалисты компании планируют собирать каждую неделю c использованием 3D принтеров.
Министр Бриджес полагает, что при успешном развитии лаборатории Новая Зеландия сможет стать «технологически подкованной». «Космическая отрасль скоро сможет приносить нам ежегодно сотни миллионов долларов», — добавил он.
Каждый запуск ракеты обойдется в $5 млн, что, как отмечает агентство, крайне малая стоимость для запуска ракеты. РН Electron способна нести до 150 кг полезной нагрузки, она сделана из углеволокна и использует электродвигатель. В отличие от ракет SpaceX Electron используется один раз. Проект получил широкую известность, среди клиентов Rocket Lab такие ведомства как NASA и Moon Express.

Salo

https://www.apnews.com/09212fb00aad40ff86a1bbba27787b5a?utm_campaign=SocialFlow&utm_source=Twitter&utm_medium=AP
Цитировать
  New Zealand space launch has nation reaching for the stars  
 Today  
 
WELLINGTON, New Zealand (AP) — New Zealand has never had a space program but could soon be launching commercial rockets more often than the United States.
That's if the plans of California-based company Rocket Lab work out.
Founded by New Zealander Peter Beck, the company was last week given official approval to conduct three test launches from a remote peninsula in the South Pacific nation. Rocket Lab is planning the first launch of its Electron rocket sometime from Monday, depending on conditions.
Rocket Lab hopes to begin commercial launches later this year and eventually launch one rocket every week. It plans to keep costs low by using lightweight, disposable rockets with 3D-printed engines.
It's a different plan than some other space companies like Elon Musk's SpaceX, which uses larger rockets to carry bigger payloads.
"Были когда-то и мы рысаками!!!"

Salo

http://www.spaceflight.com/spaceflight-purchases-electron-rocket-rocket-lab-frequent-affordable-rideshare-space/
ЦитироватьSpaceflight Purchases an Electron Rocket fr om Rocket Lab for More Frequent, Affordable Rideshare to Space         
May 17, 2017 Jodi Sorensen
                                   
Purchase reflects an increasing demand for mid-inclination orbits from small satellite industry
SEATTLE – May 17, 2017 Spaceflight, the company reinventing the model for launching small satellites into space, today announced the purchase of a Rocket Lab Electron rocket to increase the frequency of its dedicated rideshare missions. The Electron is an ideal launch vehicle for dedicated and rideshare missions, especially those serving difficult-to-come-by launch destinations such as mid-inclination orbits for remote sensing satellites. In late 2015, Spaceflight began its dedicated rideshare launch service with the purchase of a SpaceX Falcon 9 and now expands the rocket partnership to Rocket Lab with the Electron.

Dedicated rideshare for smallsats is a new launch alternative that blends cost-effective rideshare pricing (wh ere several payloads share the same launch to a specific destination) with first-class service, typically associated with buying a private rocket. Spaceflight provides multiple launch options to ensure organizations can access space when they need to, at a much lower cost than buying their own launch vehicle.
"There are numerous rideshare launches each year to Sun Synchronous Orbit, but getting to 45 to 60 degrees is hard to find, and can cost the equivalent of buying an entire rocket," said Curt Blake, President of Spaceflight's launch business. "We are thrilled to be working with Rocket Lab to enable our customers' remote sensing missions that require high revisit time over North America, Europe, and the Middle East."
Peter Beck, Rocket Lab CEO added, "The Electron is an entirely carbon-composite vehicle that is designed to carry payloads of 225kg to an elliptical orbit and up to 150kg to a nominal 500km sun synchronous low earth orbit. We look forward to expanding this relationship and operational manifest with Spaceflight as we increase our market reach and remove the barriers to commercial space."
Spaceflight has launched more than 100 satellites to date from a variety of launch vehicles including PSLV, Dnepr, Antares, Cygnus, Soyuz and others. The frequency of satellite launches, combined with Spaceflight's cross-section of customers and variety of mission-applications, is a strong indicator of the growing capabilities of small satellites and the need for more timely and cost-effective access to space.
The companies have not yet announced a date for the Electron dedicated rideshare mission. Organizations interested in learning more about this and other launch options should contact sales@spaceflight.com.
"Были когда-то и мы рысаками!!!"

Morin

Цитироватьzandr пишет:
http://www.rbc.ru/rbcfreenews/5920fb159a79474c8e041e54
ЦитироватьПо данным издания, компания на прошлой неделе получила официальное разрешение на проведение трех испытательных пусков, первый запуск запланирован на 22 мая . 
Читал в другом месте, что пуск состоялся. Но произошел отказ на второй ступени. Почему этот пуск не обсуждается в данной теме? Где-то в другом месте?
Лучшее - враг хорошего

Дмитрий В.

#168
ЦитироватьMorin пишет:
Цитироватьzandr пишет:
 http://www.rbc.ru/rbcfreenews/5920fb159a79474c8e041e54
ЦитироватьПо данным издания, компания на прошлой неделе получила официальное разрешение на проведение трех испытательных пусков, первый запуск запланирован на 22 мая .
Читал в другом месте, что пуск состоялся. Но произошел отказ на второй ступени. Почему этот пуск не обсуждается в данной теме? Где-то в другом месте?
 http://novosti-kosmonavtiki.ru/forum/forum13/topic16001/
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StarShip - аналоговнет!

Morin

Лучшее - враг хорошего

che wi

ЦитироватьJeff Foust‏ @jeff_foust  44 minutes ago

Brad Schneider, Rocket Lab: we've raised $150M to date, spent less than $100M developing Electron.

tnt22

Цитировать Eric Berger‏Подлинная учетная запись @SciGuySpace 6 ч. назад

"Beck thinks Rocket Lab has now solved the orbit issue." Plans two more test launches in the next six weeks.

tnt22

Цитировать Jeff Foust‏ @jeff_foust 2 ч. назад

Analysis of data fr om Rocket Lab's first Electron test flight in May "could be available" in the next week:
Moon Express dream of lunar mission with Rocket Lab on track
http://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=11896478
ЦитироватьMoon Express dream of lunar mission with Rocket Lab on track
29 Jul, 2017 8:49am


By: Grant Bradley
Aviation, tourism and energy writer for the NZ Herald
grant.bradley@nzherald.co.nz @gbradleynz

 
A private company planning a Moon mission involving New Zealand's Rocket Lab says it still hopes to reach the lunar surface by as early as the end of the year.

Florida-based Moon Express signed a deal with Rocket Lab in 2015 and if it can reach the Moon by the end of the year and accomplish a number of tasks it could win US$20 million ($26m).

Its robotic lander would be blasted into orbit aboard Rocket Lab's Electron rocket.
Спойлер
The MX-1 lunar lander is reportedly about 1.8m tall, weighs about 250kg and would fly to the moon over about four days after being delivered into high earth orbit by the Electron.

The US$20 million Google Lunar XPRIZE will go to the first private operation to place a spacecraft on the Moon's surface, travel 500m and transmit high-definition video and images back to Earth.

Rocket Lab says it is still the plan to get Moon Express into orbit by the end of the year. However, that will depend on as yet unproven technology to work.

Rocket Lab is in the early stages of a three-vehicle test programme and Moon Express is still developing its lander at its facilities at Cape Canaveral, from wh ere Apollo missions were launched.

Rocket Lab's first test launch successfully made it to space in late May. The first stage performed as it should but the second stage failed to deliver the payload to orbit.

Results of data analysis from the test flight could be available some time next week.

Earlier this month Rocket Lab founder Peter Beck said the company and its investors had confidence in the programme and they had another five rockets in various stages of production.

Beck said then a second test launch was about two or three months away and the company hoped to get its commercial launches underway as soon as it was satisfied with the test programme.

Moon Express unveiled design details for its lunar spacecraft at a hearing held by the House Science, Space and Technology Committee last week.



It said it was planning three missions to the moon by the end of 2020, with the ultimate goal of establishing a permanent station near the moon's south pole and returning lunar dust and rock samples to Earth for analysis of minerals.

The company says the initial Lunar Scout expedition - as early as this year - will be the first commercial voyage to the Moon.

"This historic expedition will demonstrate the cost-effectiveness of entrepreneurial approaches to space exploration, carrying a diverse manifest of payloads including the International Lunar Observatory," it said.

"Our goal is to open the lunar frontier for all of us, ultimately expanding Earth's economic and social spheres to our eighth continent, the Moon."

The company was awarded US$1 million by Google earlier this year as the only team to flight test a prototype of its lander.

In 2015 Rocket Lab and Moon Express signed a deal for three launches aboard the Electron.
[свернуть]

Димитър

ЦитироватьPlans two more test launches in the next six weeks.
А более конкретно ???

tnt22

Цитировать Rocket Lab‏ @RocketLab 53 мин. назад

Our engineering team have completed the internal data review from #ItsaTest launch. Full details available -
https://www.rocketlabusa.com/latest/rocket-lab-completes-post-flight-analysis/
https://www.rocketlabusa.com/latest/rocket-lab-completes-post-flight-analysis/
ЦитироватьRocket Lab Completes Post-Flight Analysis
POSTED ON 7 AUGUST 2017

Rocket Lab has completed an internal review of data from its May 25 test flight of its Electron rocket. The review found the launch had to be terminated due to an independent contractor's ground equipment issue, rather than an issue with the rocket. Rocket Lab's investigation board has identified the root causes and corrective actions.
Спойлер
The Federal Aviation Administration, the primary body responsible for licensing the launch, has overseen Rocket Lab's comprehensive investigation and will review the findings.

Rocket Lab's engineers have spent the last two months working through an extensive fault tree analysis to ensure all factors that may have influenced the outcome of the launch were thoroughly evaluated. The investigation involved the review of over 25,000 channels of data collected during the flight in addition to extensive testing at Rocket Lab facilities in California and New Zealand.

Rocket Lab's investigation team determined the launch, named 'It's a Test', was terminated due to a data loss time out, which was caused by misconfiguration of telemetry equipment owned and operated by a third-party contractor who was supporting the launch from Rocket Lab's Launch Complex 1.

Four minutes into the flight, at an altitude of 224 km, the equipment lost contact with the rocket temporarily and, according to standard operating procedures, range safety officials terminated the flight. Data, including that from Rocket Lab's own telemetry equipment, confirmed the rocket was following a nominal trajectory and the vehicle was performing as planned at the time of termination.

"We have demonstrated Electron was following its nominal trajectory and was on course to reach orbit," said Peter Beck, Rocket Lab CEO. "While it was disappointing to see the flight terminated in essence due to an incorrect tick box. We can say we tested nearly everything, including the flight termination system. We were delighted with the amount of data we were able to collect during an exceptional first test launch.

Rocket Lab's telemetry systems provided data verifying Electrons capabilities and providing us with high confidence ahead of our second test flight. The call to terminate a launch would be tough for anyone, and we appreciated the professionalism of the flight safety officials involved."

The telemetry data loss that led to the termination of the flight has been directly linked to a key piece of equipment responsible for translating radio signals into data used by safety officials to track the vehicle performance. It was discovered a contractor failed to enable forward error correction on this third-party device causing extensive corruption of received position data. The failure was first indicated by the fact that Rocket Lab's own equipment did not suffer similar data loss during launch. Further confirmation of the cause was demonstrated when replaying raw radio-frequency data - recorded on launch day - through correctly configured equipment also resolved the problem.

The fix for the issue is simple and corrective procedures have been put in place to prevent a similar issue in future. No major changes to the Electron launch vehicle hardware have been required and the company has authorized the production of four additional launch vehicles as it prepares for commercial operations ahead of the test flight program. Rocket Lab's second Electron rocket, named 'Still Testing', is undergoing final checks and preparations ahead of being shipped to Rocket Lab Launch Complex 1 shortly.
[свернуть]

tnt22

Цитировать Rocket Lab‏ @RocketLab 45 мин. назад

#ItsaTest launch had to be terminated due to misconfigured ground equipment owned and operated by a third-party contractor.


42 мин. назад

#ItsaTest Electron rocket was following a nominal trajectory and was performing as planned at the time of termination. The fix is simple.


22 мин. назад

No major changes to Electron launch vehicle hardware are required. Build of rockets four – six has been authorized!

tnt22

Цитировать Rocket Lab‏ @RocketLab 25 мин. назад

The name of Rocket Lab's second Electron vehicle – Still Testing.

tnt22

Цитировать Rocket Lab‏ @RocketLab 29 мин. назад

The roll was within limits - we're updating parameters and tightening our bounds ahead of flight two.

tnt22

Из переписки
Цитировать Roberto Mastri‏ @RobertoMastri 1 ч назад

Great! Can you tell, approximately, when it will be launched?


Rocket Lab‏ @RocketLab 25 мин назад

We're looking to roll the rocket out to the pad in around eight weeks!

vogel

ЦитироватьRocket Lab‏ @RocketLab  6m6 minutes ago

Rocket Lab is giving away a 3U CubeSat launch @SmallSat this week! Come see us in booth 97 to enter the competition and meet our team.
:D