"Чанчжэн-5" (CZ-5, Long March-5)

[Дмитрий В.]

Китай намерен запустить ракету "Чанчжэн-5" в космос в 2014 году

Китайские инженеры и специалисты успешно разработали первый в стране бак для водорода, который будет использован на ракете "Чанчжэн-5" в качестве резервного топливного бака, сообщил в эксклюзивном интервью корр. агентства Синьхуа Лян Сяохун, который является членом ВК НПКСК.

http://russian.news.cn/science/2012-03/04/c_131444463.htm

     

[Salo]

Ракета "Чанчжэн-5" имеет очень важное значение для космического дела Китая. Она сможет повысить грузоподъемность китайских ракет в открытом космосе в 3,5 раза, с максимальной грузоподъемностью на околоземной орбите в 25 тонн и на геосинхронной орбите в 14 тонн, подчеркнул Лян Сяохун.

По его словам, ракета "Чанчжэн-5" длиной в 60 метров будет оснащена 4 стартовыми двигателями, работающими на нетоксичном и не загрязняющем окружающую среду топливе. Диаметр каждого из них составит 3,35 метра.

http://russian.news.cn/science/2012-03/04/c_131444463.htm

 :wink:

[SpaceR]

Да в этой цитатке бред на бреде. Никакого представления о технике.
И такое ощущение, что не во всём виноват только перевод...

Кстати, раз уж об этом в статье вспомнили - а существует ли хоть один КА, запущенный непосредственно КНР не на ракетах семейства CZ ?
По-моему, таких не было.

[SpaceR]

Наткнулся на интересный китайский текст с данными на двигатель YF-100 и хронологией его создания. Цифры, в общем-то, понятны и без перевода...

http://www.9ifly.cn/thread-8183-1-1.html

Параметры:

YF-100

[SpaceR]

. . .
d

[Александр Ч.]

...

Кислород конечно. Только циферки малость попутали.

Не успел :-)
Там либо расход с ошибкой либо соотношение.

Гм... загнал в лаунчмодель... не идет расход... 407.89 и 407.79 это общий расход, а перевод иероглифов: расход кислорода.

[С. Тушин(ский)]

Кстати, раз уж об этом в статье вспомнили - а существует ли хоть один КА, запущенный непосредственно КНР не на ракетах семейства CZ ?
По-моему, таких не было.

В 70-х годах 6 спутников были запущены РН "Фэнбао-1" ("Буря-1", 4 пуска). Хотя только тонкий знаток китайской поэзии отличит эту РН от "Чанчджен-2"

[Salo]

New Chinese Rocket Engine Enters Production[/size]
Apr 11, 2012
 
By Bradley Perrett

BEIJING — China's main rocket engine maker appears to have begun deliveries of production-standard YF-100 engines, the key powerplants for the forthcoming Long March 5, 6 and 7 launchers.

A propulsion system for the Long March 5 heavy launcher, comprising two main engines and two auxiliary thrusters, was "recently" delivered by the Academy of Aerospace Propulsion Technology (AAPT) — also known as the 6th Academy — according to its parent, the national space group China Aerospace Science and Technology Corp. (CASC).

Although the integrated propulsion set will be used for trials, CASC adds that it is the first "formal product" — apparently meaning that it is not experimental — and that the event "indicates that the delivery of engines burning kerosene and liquid oxygen has entered a normal condition."

The delivery was attributed to AAPT's 7103rd Factory, which is presumably the engine's manufacturer.

The report did not name the engine in the propulsion package as the 120-metric-ton-thrust (260,000-lb.) YF-100, but its identity was obvious from the reference to kerosene fuel and the double installation.

The Long March 5 will comprise a hydrogen-fueled core using two YF-77 engines in the first stage and a variable number of boosters, each with twin YF-100s. The design has been controversial in China because in its maximum configuration, it will have 10 engines firing at liftoff, presenting an elevated risk of launch failure. Chinese engineers have proposed that a larger, single engine be developed to replace the YF-100, even though it has not entered service.

The Long March 5 is due to fly in 2014, but the YF-100 will enter service sooner in the medium-heavy Long March 7 later this year and the Long March 6 light launcher. The Long March 7 will have twin YF-100s in its core first stage and singles in each of its boosters, of which there will be up to four.[/size]

[instml]

http://forum.nasaspaceflight.com/index.php?topic=6524.msg914129#msg914129

[ronatu]

BEIJING, June 14 (Xinhua) -- China announced Thursday that it has developed a new engine for its new generation of carrier rockets, making it the second in the world to harness such engine technologies.

The 120-tonne liquid oxygen/kerosene high-pressure staged combustion cycle engine will provide an effective guarantee for the country's manned space and lunar probe missions, said the State Administration of Science,Technology and Industry for National Defence.

The high-performance engine is non-toxic, pollution-free and reliable.

It boasts 120 tonnes of thrust, making it much more powerful than the 75-tonne-thrust engines of launch vehicles for the already-launched Shenzhou spacecraft, but still far from the 670 tonnes of thrust the United States' F-1 engine boasts, and farther still from 740 tonnes of thrust of Russia's RD-170 engine.

It is the first kind of high-pressure staged combustion cycle engine for which China has proprietary intellectual property rights, said the administration.

It also makes China the second country in the world, after Russia, to grasp the core technologies for a liquid oxygen/kerosene high-pressure staged combustion cycle rocket engine.

The research project for the engine was initiated in September 2000.

It was coordinated and organized by the State Administration of Science,Technology and Industry for National Defence, and conducted by the Academy of Aerospace Propulsion Technology of China Aerospace Science & Technology Corporation.

Researchers made more than 70 technical breakthroughs in designing, manufacturing and testing, and obtained nearly 20 national defense scientific and technical achievements along with patent licenses. They also worked on nearly 50 kinds of new material.

According to a government white paper issued at the end of last year, China will develop next-generation launch vehicles, including the Long March-5, Long March-6 and Long March-7, in the 2011-2015 period.

The Long March-5 will use a non-toxic and pollution-free propellant, and will be capable of placing a 25-tonne payload into near-Earth orbit, or placing a 14-tonne payload into geostationary orbit.

The announcement of the new rocket engine came just days before China will launch the Shenzhou-9 spacecraft, which will perform a manual space docking with the orbiting Tiangong-1 lab module.

The Shenzhou-9 spacecraft will be launched by the Long March-2F carrier rocket.

This year marks the 20th anniversary of the creation of China's manned space program. The launch of the Shenzhou-9 spacecraft marks the program's 10th launch and the country's fourth manned spaceflight.


http://news.xinhuanet.com/english/china/2012-06/14/c_131652852.htm

[instml]

First Look: China's Big New Rockets

Images illustrate the diversity of activity under China's heavy lift rocket program.Top graphic depicts a Long March 5 mission with liquid booster and satellite separation. Chart highlights Long March 5 and Long March 9 vehicles, while a Long March 5 propellant tank is at right. Image Credit: CALT

Images from China's new heavy rocket development program show spotless production facilities with advanced tooling to build China's new Long March 5/CZ-5 heavy rocket, along with even more advanced launchers to come.

In addition to CZ-5 hardware development,  China is completing design studies on two 11 million lb. thrust Long March 9 maximum heavy lift rocket configurations. If approved for final development, one of  the designs would emerge for flight in 2020-2025 with the capability to launch Chinese astronauts to the surface of the Moon.

The concepts mean that China is designing "a Super Saturn V rocket," says Charles P. Vick, a highly experienced analyst with GlobalSecurity.Org.



The two options for China's "Super Saturn V" rocket are the favored "Option A" oxygen/kerosene version at left and less favored oxygen/hydrogen "Option B" with solid rocket boosters on the right. Image Credit: CALT

The Long March 5 and other future planned vehicles are shown here in context with each other for the first time in a major news article.

Images of the construction underway at China's new Wenchang Satellite Launch Center on Hainan island are also shown as the site is readied to fire Long March 5's  into space by 2014.

Currently, six Long March 5 vehicle configurations are planned for different missions, with a maximum payload capacity of 55,000 lbs. to LEO and nearly 31,000 lbs. to geostationary transfer orbits. This makes it more powerful than a Delta IV Heavy, depending upon the mission configuration.



Long March 5 stage is welded in modern assembly rig. Photo Credit: CALT

Details emerging from largely secret Chinese rocket projects point up the importance of the Long March 5 to future far more powerful Chinese rockets.

Whether the timing of China's Long March 9 development is a deliberate challenge to the U. S. is unknown. But while neither China nor the U. S. professes to be in a new space race, they may well already be in one.

The most powerful version of the new U. S. Space Launch System (SLS) rocket currently under development is scheduled to be ready for flight at the same time as the CZ-9 to carry NASA astronauts beyond Earth orbit to the Moon, Lagrangian points, asteroids and eventually Mars.



Modern jig for Long March 5 welding and assembly is comparable with western manufacturing hardware. Photo Credit: CALT

The new Long March 9 details were revealed by Liang Xiaohong, the Communist Party Chief at the China Academy of Launch Vehicle Technology (CALT),  China's largest rocket  contractor. Vick at Global Security did an extensive review of Liang's revelations.

Liang outlined several new Long March versions, virtually all of them testing elements that would eventually find their way into the Long March 9 that has 4 million lb. more of liftoff thrust than the 7.5 million lb. thrust NASA Saturn V.  Forty-three years ago this week a Saturn V propelled the Apollo 11 astronauts to the first manned landing on the Moon on July 20, 1969.

The Long March 5 appears positioned in the development flow to function like the U. S. Saturn 1B rockets did in relation to the Saturn V in Apollo. That role was to use a powerful, but smaller launch vehicle to launch key elements of the program like the Apollo Command/Service modules and Lunar Modules for test in Earth orbit.

There is one major difference with the Long March 5 however. It is powerful enough to launch a Shenzhou manned  spacecraft on a lunar orbit flight, a mission the Saturn 1Bs could not duplicate.



Larger view of new Long March fleet chart shows medium class Long March 7 at center with smaller but upgraded vehicles to the left and a whole new range of Chinese heavy lift options to the right. The Long March 5 alone has 6 configurations. Image Credit: CALT

For the  massive Long March 9, the Chinese have both an "Option A" oxygen/kerosene powered launcher and an "Option B oxygen/hydrogen rocket. The detailed specifications for both rocket concepts are at the bottom of this article.

Option A appears to be the preferred of the two options because its first stage uses liquid propellant strap on boosters, compared with "Option B" that combines an oxygen/hydrogen core with solid rocket boosters, an area where China lacks experience.

The Option A concept would stand 321 ft. tall and have a design payload to low Earth orbit of  130 metric tons (286,601 lb.)  exactly the same as the largest of two SLS versions.



Hainan Island launch pad for Long March 5 is well under way toward being ready for its first launch in 2014. Photo Credit: CALT

As part of an oxygen/kerosene Long March 9 project, China has already started development of a large new oxygen/kerosene rocket engine called the YF-650 that stems directly from the Long March 5 in advanced production.

"The YF-100, oxygen/kerosene engine with 120 metric tons of thrust for the new Long March-5 debuting in 2014 forms the technical basis for 330 metric tons thrust YF-330 single thrust chamber engine," said Vick.

"It in turn is being combined with a second identical thrust chamber engine to create the YF-650 engine with 650 metric tons thrust," he said.



Rocket engine test stand fire Long March 5 engine. Photo Credit: CALT

This is similar to the Russian Energomash RD-180 design used on the Russian Zenit.  The same engine was essentially cut in half to power the Atlas V.

"The Chinese will combine several of them to achieve 5,200 metric tons of liftoff thrust.  That equates to an 11.46 million lb. thrust 'Super Saturn V' class rocket," said Vick.

Data on the Option A and Option B Chinese "Super Saturn Vs" compiled by Vick from Chinese sources is presented in chart form below.

CZ-9/Long March-9 Lunar, Planetary Heavy Lift Booster
Configurations Studies    Concept-A*    Concept-B
Original Launch Thrust metric tons thrust force 2009    3,000    3,000
New 2012 launch thrust metric ton's    5,200    5,000
Payload capacity- metric tons mass    130    133
Maximum overall booster diameter meters    15.70    15.70
Maximum design height for study meters    98    101-108
Launch mass metric tons    4,100    4,150
Strap-on boosters    4 – liquid Kerosene, Lox boosters    4 five segment solid propellant motors
Strap-on boosters diameter meters    3.35    3.35
Strap-on booster thrust metric tons    1 x 650 x 4 = 2,600, engine YF-650    1 x 1,000, x 4 = 4,000 Solid Motor
Strap-on propellant mass metric tons    1 x 320 x 4= 1,280    1 x 575 4 =2,300
Core Stages diameter meters    8-9    8-9
Core first stage metric tons thrust, propellants and engines    4 x 650 = 2,600, YF-650 engines, Kerosene, Lox propellants**    5 x 200 = 1,000 YF-220 engines, Lox, Hydrogen propellants
Core first stage propellant mass metric tons    1,756    1,000
Core second stage maximum diameters meters    8-9    8-9
Core second stage thrust metric tons and propellants    2 x 200 = 400, Lox, Hydrogen propellants    1 x 200 = 200, YF-220 engine, Lox, Hydrogen
Core second stage propellant mass metric tons    500

This is similar to the Russian Energomash RD-180 design used on the Russian Zenit.  The same engine was essentially cut in half to power the Atlas V.

"The Chinese will combine several of them to achieve 5,200 metric tons of liftoff thrust.  That equates to an 11.46 million lb. thrust 'Super Saturn V' class rocket," said Vick.

Data on the Option A and Option B Chinese "Super Saturn Vs" compiled by Vick from Chinese sources is presented in chart form below.

CZ-9/Long March-9 Lunar, Planetary Heavy Lift Booster
Configurations Studies    Concept-A*    Concept-B
Original Launch Thrust metric tons thrust force 2009    3,000    3,000
New 2012 launch thrust metric ton's    5,200    5,000
Payload capacity- metric tons mass    130    133
Maximum overall booster diameter meters    15.70    15.70
Maximum design height for study meters    98    101-108
Launch mass metric tons    4,100    4,150
Strap-on boosters    4 – liquid Kerosene, Lox boosters    4 five segment solid propellant motors
Strap-on boosters diameter meters    3.35    3.35
Strap-on booster thrust metric tons    1 x 650 x 4 = 2,600, engine YF-650    1 x 1,000, x 4 = 4,000 Solid Motor
Strap-on propellant mass metric tons    1 x 320 x 4= 1,280    1 x 575 4 =2,300
Core Stages diameter meters    8-9    8-9
Core first stage metric tons thrust, propellants and engines    4 x 650 = 2,600, YF-650 engines, Kerosene, Lox propellants**    5 x 200 = 1,000 YF-220 engines, Lox, Hydrogen propellants
Core first stage propellant mass metric tons    1,756    1,000
Core second stage maximum diameters meters    8-9    8-9
Core second stage thrust metric tons and propellants    2 x 200 = 400, Lox, Hydrogen propellants    1 x 200 = 200, YF-220 engine, Lox, Hydrogen
Core second stage propellant mass metric tons    500



Hainan Island launch pads for the Long March 5 and smaller Long March 7 rockets are visible in this overhead shot. There are separate Vehicle Assembly Buildings for each launch pad. Photo Credit: China Space Blog / Bing

http://www.americaspace.org/?p=22881

[ronatu]

BEIJING/XI'AN, July 29 (Xinhua) -- China on Sunday successfully conducted tests on its new 120-tonne-thrust liquid oxygen (LOX) and kerosene engine for its new generation carrier rocket, the Long March-5, according to the China Aerospace Science and Technology Corporation (CASC).

The test was conducted in Xi'an, capital city of northwest China's Shaanxi province, according to the CASC's sixth research institute.

The LOX/kerosene engine underwent a test of a high rotational speed of nearly 20,000 revolutions per minute and a high temperature test of 3,000 degrees Celsius that lasted for 200 seconds, the China Central Television reported.

The high-performance engine, which is the first kind of high-pressure staged combustion cycle engine for which China has proprietary intellectual property rights, is non-toxic, pollution-free and highly reliable, according to the report.

It also makes China the second country in the world, after Russia, to grasp the core technologies for an LOX/kerosene high-pressure staged combustion cycle rocket engine.

The large-thrust carrier rocket under development, the Long March-5, is hoped to make its maiden voyage in 2014. Ahead of that, several limit-determining tests will be conducted to ensure the engine's stability and reliability, according to the statement.

[Seerndv]

CyberSecurity.ru. Китай протестировал новый ракетный двигатель, который должен будет лечь в основу новых ракетных ускорителей. При помощи данных ракет КНР в будущем надеется построить собственную космическую станцию, организовывать полеты на Луну и проводить другие научно-исследовательские миссии.
 
Новый двигатель работает на сжиженном кислороде и керосине, проектируется он под новую китайскую ракету-носитель Чанчжень-5, которая придет на смену нынешней ракете Чанчжень-2F. Ранее последняя ракета уже была активно использована для реализации разных миссии КНР в космосе, однако возможности 5F ограничены низкой орбитой. Более мощная и функциональная Чанчжень-5 должна будет сыграть ключевую роль в создании космической станции к 2020 году.
 
Первый запуск новой ракеты-носителя ожидается в 2014 году.
 
В воскресенье в КНР были проведены огневые и вибрационные тесты нового двигателя, в рамках которых он на протяжении 200 секунд работал на полной мощности, разогревшись до температуры почти в 3000 градусов. Инженеры говорят, что тесты прошли успешно. Руководили тестированием специалисты Китайской аэрокосмической корпорации CASC.
 
По их словам, кислородно-керосиновые двигатели являются нетоксичными и не загрязняют окружающую среду. Сам двигатель способен давать тягу в 118 тонн, против 74 тонн у двигателей Чанчжень-2F. На практике, подобные двигатели позволят доставлять в космос грузы массой до 25 тонн на низкую орбиту и до 14 тонн на геостационарную.

 а стенд вроде другой:



по сравнению сприведённым в:

Rocket engine test stand fire Long March 5 engine. Photo Credit: CALT

[Зловредный]

It also makes China the second country in the world, after Russia, to grasp the core technologies for an LOX/kerosene high-pressure staged combustion cycle rocket engine

Эти догонят. И перегонят.

[Veganin]

Вроде бы еще американцы имеют комплект РКД на РД-180.
Китайцы сами реализовали идею ЖРД высокого давления или воспользовались разработками одной хорошо известной нам страны :wink:

[Salo]

http://www.avanturist.org/forum/topic/101/message/1361811#msg1361811

[Veganin]

Salo, спасибо - ссылка на пост очень в тему.
При таких делах не грех и индусам что-нибудь продать из советского задела, немного наплевав на международные договоры, регулирующих передачу ракетных технологий.
Можно взять пример с США, которые после индийских испытаний ядерных бомб в 98г. ввели санкции против индусов, а недавно отменили и готовы передать Индии современные атомные технологии.
ЗЫ
Комплект РКД и ТД на РД-170 (или его производные) обрадует индийских братьев   :wink: Индусы даже торговаться не будут  

PPS
Вряд ли индийцам что-нибудь передадут без кивка Демократии.

[Liss]

The Long March 5 will comprise a hydrogen-fueled core using two YF-77 engines in the first stage and a variable number of boosters, each with twin YF-100s.

Мгм. Слона-то я и не приметил :-)
А когда же было окончательно решено иметь на центральном блоке CZ-5 кислород-водородные 50-тонные двигатели YF-77, а вовсе не пару YF-100?

[Salo]

Пара YF-100 на ЦБ будет на CZ-7.

[SpaceR]

The Long March 5 will comprise a hydrogen-fueled core using two YF-77 engines in the first stage and a variable number of boosters, each with twin YF-100s.

Мгм. Слона-то я и не приметил :-)
А когда же было окончательно решено иметь на центральном блоке CZ-5 кислород-водородные 50-тонные двигатели YF-77, а вовсе не пару YF-100?

Дык вроде бы - всегда...
С самого первого сообщения, где была обнародована концепция РН и диаметр ЦБ = 5 м, была, няп, инфа о том, что он будет кислородно-водородным.