RLV-TD – демонстратор индийского многоразового носителя с крылатой ступенью

Автор Salo, 07.01.2015 00:26:28

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Salo

http://www.livemint.com/Politics/rQIXOa8IJ68k5q9ZZYzlNM/Isro-to-carry-out-wingedreusable-rocket-tech-demo.html
ЦитироватьFirst Published: Mon, Jan 05 2015. 03 11 PM IST
Isro to carry out winged-reusable rocket tech demo
Isro will carry out the technology demonstration of the reusable launch vehicle in March
Nikita Mehta

Isro will test if the 12-tonne vehicle can reach five times the speed of sound, whether it can re-enter the atmosphere and land on the sea using its computer system. Photo: AFP

Mumbai: Satellites are typically deployed by expensive rockets which disintegrate in phases en route to space; however, the Indian Space Research Organisation (Isro) is working on developing the technology for a winged rocket that can be used repeatedly, a senior official said.
Isro will carry out the technology demonstration of the reusable launch vehicle in March, the official said.
Space vehicles are costly to build and launch, and making them reusable could help reduce space mission costs.
"The structure that makes a rocket has to be such that it should have 98% propellant and 2% structure. Only then reusability is possible. Today's technology does not allow you to go to that level as 5% to 10% will be the mass of the structure and around 90% will be the propellant," said S. Somanath, associate director of Isro's Vikram Sarabhai Space Centre (VSSC).
"But then, new ideas are coming up, SpaceX is working on a reusable launch vehicle, but nobody is sure if in the next 10 years, reusable vehicles will be a reality," Somanth added.
VSSC is trying to develop a Winged Reusable Launch Vehicle Technology Demonstrator (RLV-TD) which will act as a flying tester to assess hypersonic flight, autonomous landing, powered cruise flight and hypersonic flight using air-breathing propulsion. Isro is currently integrating the flight model.
In the technology demonstrator, Isro will test if the 12-tonne vehicle can reach five times the speed of sound, whether it can re-enter the atmosphere and land on the sea using its computer system.
To be sure, this will be a technological demonstration and the tested vehicle will not be reusable. The VSSC director explained that take-off will be vertical like a rocket, and landing will be like that of an aircraft.
 "The reusable launch vehicle is important because space orbiting currently costs us $5,000 per km. That kind of money, space exploration and commercial space activities, are not possible," explained Somanth.
"We want to come down to $500, and the one problem here is hardware. Propellant is not that costly, but the hardware is extremely costly and needs to be reused for space travel to be affordable," he added. Attempts at developing an operational reusable rocket launcher have not been quite successful so far. Till now, only two vehicles have come close to being a reusable launch vehicle—one being the space shuttle developed by the US, and the other, Buran developed by Russia. Both of these were only partially usable.
"Были когда-то и мы рысаками!!!"

Salo

#1
http://www.militaryparitet.com/ttp/data/ic_ttp/7336/
ЦитироватьИндия создаст многоразовый космической корабль массой 12 т
7 января 2015 г.
09:11

«Военный Паритет». В настоящее время Индийская организация космических исследований (Indian Space Research Organisation - ISRO) присматривается к возможности создания многоразовых космических кораблей «для недорогого доступа в космос», сообщает defencenews.in 6 января.
 
В марте этого года  космическое агентство продемонстрирует технологии космоплана, который будет летать как самолет. Ракета-носитель повторного использования (reusable launch vehicle - RLV) позволит снизить стоимость вывода одного килограмма полезной нагрузки до 500 долл США вместо 5000 сегодня, говорит заместитель директора Космического центра Викрам-Сарабхай (Vikram Sarabhai Space Centre) С. Соманаф (S Somanath).
 
Агентство намерено разработать многоразовый челнок массой 12 т, который может развить скорость 5М и совершить посадку на море с помощью компьютерной системы управления. Тяжелая ракета-носитель GSLV MkIII успешно испытана в декабре 2014 года. Считается, что ракетное топливо не такое дорогое, но очень дорого стоит орбитальная ступень, тем не менее, настоящим прорывом будет как многоразовая РН, так и возвращаемый космический челнок, созданных по концепции двухступенчатого выхода в космос (Two Stage To Orbit - TSTO), считает агентство.
 

"Были когда-то и мы рысаками!!!"

Димитър


Salo

http://www.newindianexpress.com/nation/ISRO-to-Carry-out-RLV-TD-Test-Flight/2015/03/05/article2698679.ece
ЦитироватьISRO to Carry out RLV-TD Test Flight  
 
 By Express News Service
 Published: 05th March 2015 06:00 AM
 Last Updated: 05th March 2015 03:22 AM
 
NEW DELHI:  In what could bring down the cost of access to space, the Indian Space Research Organisation (ISRO) will carry out a test flight of Reusable Launch Vehicle- Technology Demonstrator (RLV-TD) by second quarter of 2015 which will bring down the cost of satellite launches in India.
The cost of access to space is the major deterrent in space exploration and space utilisation and a reusable launch vehicle is the unanimous solution to achieve low-cost, reliable and on-demand space access.
Technology Demonstrator winged body vehicle weighing 1.5 tonnes will be lifted to a height of 70 km using solid booster, thus attaining five times the speed of sound, Minister of State in the Prime Minister's Office Jitendra Singh said in reply to a question in the Lok Sabha.
"Development of Reusable Launch Vehicles is a technical challenge and it involves development of many cutting edge technologies. The magnitude of cost reduction depends on development and realisation of fully reusable launch vehicle and its degree of reusability," said Singh.
"Были когда-то и мы рысаками!!!"

Salo

Замечательно всё, начиная с заголовка:
http://tass.ru/kosmos/1807218
ЦитироватьИндия до конца года планирует испытать прототип собственной ракеты-носителя
 
 Космос
 4 марта, 14:08 UTC+3
 Пуск должен состояться с единственного в стране космодрома на острове Шрихарикота вблизи побережья штата Андхра-Прадеш  
 
НЬЮ-ДЕЛИ, 4 марта. /Корр. ТАСС Александр Антипин/. Индийская организация космических исследований (ИСРО) проведет в течение полугода испытания прототипа ракеты- носителя многоразового использования собственной разработки. Об этом говорится в полученном сегодня корр. ТАСС официальном сообщении ИСРО.  
 
"Прототип массой 1,5 тонны будет поднят на высоту в 70 км при помощи твердотопливного ускорителя и достигнет скорости до 5 Маха (в 5 раз превышать скорость звука)", - добавила организация, уточнив, что аппарат должен приводниться в море.
В ходе испытаний ученые рассчитывают проверить теплозащитную систему, систему управления, авионику и аэродинамические характеристики аппарата на гиперзвуковой скорости.
Сроки конструирования ракеты-носителя и оценочную стоимость проекта Индийская организация космических исследований уточнять не стала.
Пуск должен состояться с единственного в стране космодрома на острове Шрихарикота вблизи побережья штата Андхра-Прадеш.
Индия успешно проводит коммерческие запуски на ракете- носителе, предназначенном для вывода небольших спутников на полярную орбиту (серии PSLV) с массой полезной нагрузки до двух тонн. Они доставили на орбиту 40 иностранных спутников.
"Были когда-то и мы рысаками!!!"

triage

#5
ЦитироватьSalo пишет:
http://www.militaryparitet.com/ttp/data/ic_ttp/7336/
....
Агентство намерено разработать многоразовый челнок массой 12 т, который может развить скорость 5М и совершить посадку на море с помощью компьютерной системы управления.
....
и более позднее
ЦитироватьSalo пишет:
http://tass.ru/kosmos/1807218
....
"Прототип массой 1,5 тонны будет поднят на высоту в 70 км при помощи твердотопливного ускорителя и достигнет скорости до 5 Маха (в 5 раз превышать скорость звука)", - добавила организация, уточнив, что аппарат должен приводниться в море.
....
По первому сообщению - это действительно многоразовый челнок массой 12 тонн (во втором сообщении прототип 1,5 тонн) все время будет садится в море? или это горе-журналисты? 
Подразумевается что в отличии от программ США и СССР/России многоразовый крылатый аппарат весом 12 тонн, не прототип, приземляется не на полосу, а на водную поверхность?

Salo

Прототип RLV-TD действительно весит полторы тонны. А будет ли впоследствии многоразовый челнок это бабушка надвое сказала.
"Были когда-то и мы рысаками!!!"

Дмитрий Инфан

#7
Цитироватьpnetmon пишет:
По первому сообщению - это действительно многоразовый челнок массой 12 тонн (во втором сообщении прототип 1,5 тонн) все время будет садится в море? или это горе-журналисты?
"Многоразовый челнок массой 12 тонн" будет в принципе, когда-нибудь, а "прототип 1,5 тонны" - до конца этого года.

Salo

http://spacenews.com/india-to-fly-rlv-tech-demo-by-june/
ЦитироватьIndia To Fly RLV Tech Demo by June
by K.S. Jayaraman — March 5, 2015
Four test flights are planned for ISRO's Reusable Launch Vehicle (RLV) Technology Demonstration Program. Credit: ISRO  
 
BENGALURU, India — The Indian Space Research Organisation (ISRO) will conduct its long-delayed initial test flight of a reusable launcher technology demonstrator by midyear, a senior government official said.
The Reusable Launch Vehicle (RLV) Technology Demonstration Program, involving a series of experimental missions, was conceived by ISRO in 2009 as a first step toward a fully reusable, two-stage-to-orbit launcher.
Jitendra Singh, minister of state for science, told the Indian parliament March 4 that in the upcoming test, the 1.5-ton technology demonstrator will be launched to a height of 70 kilometers atop a solid-rocket booster, an ascent during which it will reach five times the speed of sound. "Thereafter it will descend by gliding and splashing down into the sea," he said.
The flight will demonstrate the vehicle's hypersonic aerodynamic properties, avionics, thermal protection and control systems, and mission management, Singh said. The entire flight will be autonomous, he said.
According to ISRO, four flights of the technology demonstrator are planned. The upcoming hypersonic flight will be followed by a landing experiment, a launch to orbit and return mission and a scramjet propulsion demonstration.
The initial RLV Technology Demonstration Program flight originally was scheduled for 2011 but was postponed multiple times. The exact date of the coming flight has not been announced.
According to Indian space officials, the experimental flights will show, in a cost effective way, the technologies that are required for taking decisions on the design and development of the full-scale two-stage-to-orbit RLV.
"Были когда-то и мы рысаками!!!"

triage

#9
на сайте ISRO
 http://www.isro.gov.in/technology-development-programmes/reusable-launch-vehicle-technology-demonstration-program-rlv-td

индийское англоязычное СМИ с сообщением за 27 февраля..., а за 5 марта уже привели 
Цитировать http://www.newindianexpress.com/states/kerala/ISRO-Plans-to-Test-fly-Reusable-Launch-Vehicle-by-Mid-2015/2015/02/27/article2689302.ece
Published: 27th February 2015
KOVALAM: Taking India's 'space shuttle' dreams a notch closer to reality, the Indian Space Research Organisation (ISRO) plans to test-fly the Re-usable Launch Vehicle-Technology Demonstrator (RLV-TD) by the middle of 2015.
"The test-flight will take place either by the end of the first half of this year or the beginning of the second half. Work is progressing satisfactorily," ISRO's new chief A S Kiran Kumar told Express on the sidelines of the three-day International Conference on Climate Change and Disaster Management which began here on Thursday. "This first test is one of a segment. Work on the RLV is progressing in steps," he said.
The unmanned, sub-orbital mission will lift off from the second launch pad of the Satish Dhawan Space Centre (SDSC), Sriharikota. In simple terms, the two-stage technology demonstrator is a 'space plane' rigged atop a rocket.  "The first stage burns on solid fuel. Atop it is the space plane which will return to earth after the flight," Kiran Kumar said.
At present, for placing satellites in orbit, ISRO uses the Polar Satellite Launch Vehicle (PSLV) and the Geosynchronous Satellite Launch Vehicle (GSLV), both expendable vehicles. A Re-usable Launch Vehicle (RLV) - think NASA's space shuttles - will bring down expenses phenomenally and is the next big leap in ISRO's launch vehicle programme.
Kiran Kumar, who took over as ISRO chairman in January this year, also listed his other priorities for the space agency. Increasing the number of missions, completing India's navigational satellite constellation and the big cryogenic engine for the Mk-III version of GSLV are a few.
"We have to streamline the whole process. We are actually behind schedule in many programmes," he said.  An important project underway is the development of the semi-cryogenic engine, which, again slashes launch costs remarkably. Whereas a cryogenic engine uses Liquid Hydrogen (LH2) and Liquid Oxygen (LOX) as propellants, a semi-cryogenic system replaces LH2 with cheaper and easier-to-handle kerosene.

октоген

Ну индусы знаменитые фантазеры. Их предыдущие фантазии про ВКС с ожижением воздуха в воздухозаборнике и размерностью с миг-23 здорово меня повеселили. Остается сделать ставки на каком этапе ЭТОГО проекта они столкнутся с фундаментальными трудностями...

che wi

RLV-TD Mission to be Delayed At least Till the Year End
http://www.newindianexpress.com/states/kerala/RLV-TD-Mission-to-be-Delayed-At-least-Till-the-Year-End/2015/10/02/article3058357.ece

ЦитироватьTHIRUVANANTHAPURAM: The Reusable Launch Vehicle-Technology Demonstrator (RLV-TD) mission, India's first step towards building a space shuttle, will be delayed at least till the year end.

The Indian Space Research Organisation (ISRO) originally planned to have the mission in October. But tests are still progressing on the prototype here at the Vikram Sarabhai Space Centre (VSSC). "Some more work is pending on the technology demonstrator. We have a few tests to complete and we will have the mission either towards December end or by the beginning of next year," said VSSC director Dr K Sivan. VSSC is in charge of constructing the prototype.

Initial plans were to have the mission in mid-2015. But continuing works and an extremely hectic launch schedule had forced the ISRO to put off the mission. The space agency also plans to have a commercial Polar Satellite Launch Vehicle (PSLV) mission, possibly in November. The PSLV-CA 29 mission is scheduled to place a bouquet of Singapore satellites in the orbit.

RLV-TD, which will be unmanned, comprises a space plane-like part riding atop a booster rocket. It will be launched from the Satish Dhawan Space Centre, Sriharikota. The RLV-TD weighs 1.5 tonnes and it will glide back to earth from a height of 70 kilometres. ISRO, which has twice successfully demonstrated the re-entry technology, plans to recover the RLV-TD from the Bay of Bengal.

The RLV-TD will be the first of a series of flight-tests before ISRO can design and build a real vehicle.

Salo

http://timesofindia.indiatimes.com/city/bengaluru/Reusable-launch-vehicle-test-put-off/articleshow/49330128.cms
ЦитироватьReusable launch vehicle test put off
Chethan Kumar,TNN | Oct 13, 2015, 02.38 AM IST

BENGALURU: Indian Space Research Organisation (Isro) has postponed the test launch of the key reusable launch vehicle technology demonstrator (RLVTD) to next year.

While the earlier test schedule of September was disrupted by the launch of Astrosat, India's first astronomy satellite other launches with societal application have delayed it further.

A source said the focus currently is on putting the payload for GPS Aided Geo Augmented Navigation (GAGAN) system which will be put in space by GSAT in November first week and the subsequent Indian Regional Navigation Satellite System (IRNSS) launch in December.

"Both these missions have direct societal applications, which Isro feels is important," the source said, reiterating that preparations for the RLVTD test were all ready. The reusable launch vehicle will reduce launching cost to one-tenth of what's incurred now.

Another source pointed out that even the eventual test of the RLVTD will be of a vehicle that's one fifth the original prototype and may not even require the PSLV. "A single-phase rocket will suffice," he said. Isro has already successfully completed testing the crew module, which is important for the human space programme.
"Были когда-то и мы рысаками!!!"

triage

#13
пишут о переносе первого запуска уменьшенного демонстратора технологий на первую неделю апреля, с меньшей вероятностью запуск в первой недели февраля, из-за обнаруженных технических проблем, а так же из-за других имеющихся запусков.
Цитироватьhttp://www.newindianexpress.com/states/kerala/ISROs-RLV-TD-Project-Likely-to-be-Delayed/2015/12/28/article3199197.ece

ISRO's RLV-TD Project Likely to be Delayed
Last Updated: 28th December 2015 05:08 AM

THIRUVANANTHAPURAM:  Technical snags have forced the Indian Space Research Organisation (ISRO) to put off the first test on a scaled-down prototype of India's futuristic space shuttle.
Sources said on Sunday that the Reusable Launch Vehicle-Technology Demonstrator (RLV-TD), under development at the Vikram Sarabhai Space Centre (VSSC) here at Thumba, developed a minor leak during a test, forcing the ISRO to postpone the mission. The ambitious RLV-TD, the first small step to building a 'space shuttle' which can return to earth after accomplishing space missions, is likely to be delayed up to April 2016.  ISRO had originally planned a mid-2015 launch for the RLV-TD. It had later been postponed to January 2016.

VSSC Director Dr K Sivan said that some of the components had to be re-assembled. ''If things go as planned, we can launch the mission in the first week of February. Otherwise, the test will be conducted in the first week of April,'' he said. ISRO has three missions lined up for January and March, which is another reason why the RLV-TD could be delayed up to April. ISRO plans to launch the three remaining IRNSS satellites - which will complete the seven-satellite Indian Regional Navigational Satellite System - by March 31. The first of the three is to be launched on January 20, and the remaining two in March using the Polar Satellite Launch Vehicle (PSLV).  "The missions will be launched from the first launch pad, which is also to be used for the RLV-TD,'' Sivan said.

The RLV-TD consists of a winged space plane-like part rigged atop a booster rocket. The rocket will go up to a height of 70 km and release the space plane portion which will glide down to earth. 
In the first test, the space plane will glide into a landing in the Bay of Bengal. RLV-TD will be the first of a series of tests planned by ISRO before venturing to build the actual vehicle.

Сергей

Концептуально - после посадки на воду придется менять все керамические теплозащитные плитки - очень сильные термонапряжения при резком охлаждении, и или потрескаются, или отвалятся.

PIN

"Концептуально" это демонстратор/прототип, аналогично IXV.
Ничего там менять не надо, потому что аппарат по определению одноразовый.

Garixon

Задержка запуска индийского космолета
ЦитироватьВ середине 2015 года так и не был реализован запланированный запуск индийского космолета.
    Речь идет о космолете RLV-TD, который разрабатывался Индийским Космическим Исследовательским центром (Space Research Organisation (ISRO). Это многоразовый экспериментальный космолет, который по дизайну очень схож с американским космолетом X-37B. 
     Как сообщают организаторы проекта, первый демонстрационный запуск индийского космолета был перенесен по техническим причинам. Ожидается, что запуск состоится в феврале или даже апреле 2016 года.
Космолет RLV-TD был разработан с целью снизить стоимость космических запусков. По предварительным подсчетам, запуск полезной нагрузки на околоземную орбиту при помощи нового индийского космолета снизит стоимость с 5000 долларов до 500 долларов за у килограмм.


che wi

ISRO plans technology demonstration of Reusable Launch Vehicle mission by mid-May

ЦитироватьIndian Space Research Organisation is planning the technology demonstration of its Reusable Launch Vehicle, expected to make space missions economically viable, by mid-May.

The flight integration of the Reusable Launch Vehicle-Technology Demonstrator (RLV-TD) is almost complete at the Vikram Sarabhai Space Centre (VSSC) in Thiruvananthapuram and it will be shifted to Bengaluru for further tests next week, VSSC Director K Sivan said on Monday.

"RLV-TD is almost integrated and tests are progressing. It will be shifted to Bengaluru next week for an acoustic test and then to Satish Dhawan Space Centre, Sriharikota (SHAR) for final preparations before the launch," he told reporters here.

"We want clear weather conditions for the launch. We hope it will happen by first half of May," he said.

Спойлер
RLV-TD is a series of technology demonstration missions that have been considered as a first step towards realising a Two Stage To Orbit (TSTO) fully reusable vehicle.

Under the preliminary mission, which is planned as a suborbital one, a double-delta winged vehicle, which more or less resembles an aircraft, will be launched from the SHAR.

The 6.5 meter-long vehicle, having a mass of 1.75 tonne, will go up to around 70 km after which it is expected to descend at a particular point on the sea.

Sivan said the proposed mission would be just a "baby step" in terms of the RLV technology and no way near to the real Reusable Launch Vehicle.

"What we do now is only a demonstration. It is no way near to the real RLV. It is like a drop test to bring back a launched vehicle to some point. It is just a baby step towards the giant leap," he said.

Flush air-data system, slow burning propellant and composite movable fin are among the significant features of the RLV-TD.

The total cost of the mission is estimated to be around Rs 95 crore, the VSSC Director said adding the launch would give major inputs for the designing of the full-scale RLV in future.
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