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印度的可重复使用载具技术验证机:RLV-TD成功进行亚轨道测试

发布者: jingyan66 | 发布时间: 2008-12-26 22:15| 查看数: 25573| 评论数: 183|帖子模式

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本帖最后由 cmj9808 于 2016-5-23 11:55 编辑

21 Dec 2008

AERODYNAMIC CHARACTERISATION OF RLV-TD

ntaf221208.jpg
NAL trisonic wind tunnel facility is being used extensively to characterize the aerodynamics of Reusable Launch Vehicle Technology Demonstrator (RLV-TD) configuration during various phases of flights as well as to generate very important data viz.  FADS calibration coefficients, hinge moments, unsteady aerodynamics, flow visualization and dynamic derivatives of RLV-TD HEX-1 mission, which is planned in the middle of next year.  The descent phase aerodynamic characterization (TDV alone) was completed and the huge data generated was of immense use for the design and simulations.  The aerodynamic community has lauded the voluminous data, which runs into 1196 tables that was followed for the first time, as practiced in aircraft industry.

In order to meet RLV-HEX-1 mission target of May-June 2009, the complete aerodynamic characterization during ascent phase as well as FADS calibration data were essential by November, 2008. On the request from ISRO, the test program was undertaken on priority by the NTAF team.  Also during the course of the tests, the test data were made available in real time to the Project and design teams that facilitated making a first cut assessment on the result and to carry forward the remaining program.  The total number of blowdowns was more than 450 and the whole test program went smooth.  The NTAF team rose to meet the crises, like power problems and put extra effort in order to ensure timely completion of the program.

On behalf of the project, Dr K Sivan Project Director, RLV-TD, VSSC has appreciated the NTAF team for putting their best efforts to complete the RLV-TD ascent phase aerodynamic characterization and FADS calibration test for providing the data within the targeted schedules .  Dr K Sivan has also mentioned that he is looking forward to the continued support and cooperation from NAL for the further test programs.

最新评论

冷眼 发表于 2008-12-26 22:50
A3也搞航天飞机?
cmj9808 发表于 2008-12-26 23:37
可复用助推级的两级入轨系统是现在的流行趋势
气动外形看起来像X37
jingyan66 发表于 2009-1-2 11:52

RLV-TD从水上回收

Thursday, Aug 25, 2005   Hindu

Reusable launch vehicle (TD) lift-off in 2008


T.S. Subramanian

To be the forerunner of the Indian version of a space shuttle; a marriage of aircraft and rocket technologies  


CHENNAI: A technology demonstrator (TD) of a reusable launch vehicle (RLV) — a forerunner of the Indian version of a space shuttle — will take off in 2008.

Unmanned, it will blast off like a rocket from the Sriharikota spaceport, come back like an aircraft, drop into the sea to the east of Sriharikota and be recovered from the sea, initially. Work on the RLV-TD project is on at the Vikram Sarabhai Space Centre (VSSC), Thiruvananthapuram. The shuttle part of the RLV will ultimately help in reducing the cost of launches.

As a precursor to the RLV-TD, a recoverable satellite, weighing 600 kg, will be launched by the Indian Space Research Organisation's (ISRO) Polar Satellite Launch Vehicle (PSLV) in 2006. It will fall into the sea after being in orbit for a few days and be recovered by a ship. It is called the Space Capsule Recovery Experiment.

Demonstration units, simulating a satellite, were dropped into the Pulicat lake, off the Sriharikota island, and also into the Bay of Bengal and they were recovered.

Dr. B.N. Suresh, Director, VSSC, said, "The RLV-TD will be a marriage of technologies of a rocket and an aircraft. Our first RLV-TD will fly in 2008. That is what we are working on."

The cost of putting a satellite in orbit today, using expendable launch vehicles, was between $15,000 and $20,000 a kg. Expendable rockets included India's PSLV, Russia's Molniya or Arianespace's Ariane. About 70 per cent of this cost went towards building the rocket stages that fell into the sea and could not be recovered. There was a felt-need to reduce this launch cost to $1,000 a kg. "Launch of heavy payloads will become viable only when the cost of launch vehicles is brought down," Dr. Suresh said.

The first stage of ISRO's Satellite Launch Vehicle-3, called S-9, will form the booster for the RLV-TD. The Technology Demonstrator (the shuttle) will be mounted on S-9. After the blast off and reaching six times the speed of sound, the S-9 will separate and fall into the sea. After this, the TD will have a hypersonic flight and drop into the sea to the east of Sriharikota.

The project entailed mastering of a number of technologies. "We will go step by step," the VSSC Director said. The RLVs operated at high Mach numbers (several times the speed of sound) and the game of hypersonic aerodynamics ruled here, Dr. Suresh said.
jingyan66 发表于 2009-1-2 12:03

RLV-TD

RLV-TD.jpg
jingyan66 发表于 2009-1-2 12:08

A3还有一个两级入轨的可重复使用载具的设想RLV-TSTO

RLV-TSTO.jpg
RLV-TSTO(Two Stage To Orbit)
cmj9808 发表于 2009-1-2 12:28
原帖由 jingyan66 于 2009-1-2 11:52 发表
RLV-TD从水上回收
The first stage of ISRO's Satellite Launch Vehicle-3, called S-9, will form the booster for the RLV-TD. The Technology Demonstrator (the shuttle) will be mounted on S-9. After the blast off and reaching six times the speed of sound, the S-9 will separate and fall into the sea. After this, the TD will have a hypersonic flight and drop into the sea to the east of Sriharikota.

这应该是一次缩比验证机的高超音速自由飞实验,RLV-S9类似于X43-pegasus,S9是用作助推RLV至6 mach的,试验结束均不回收。
Nighthawk 发表于 2009-1-2 19:59
这种两级入轨、芯一级返回的方案,花费的成本与一次性火箭比,能低多少?
cmj9808 发表于 2009-1-2 21:44
原帖由 Nighthawk 于 2009-1-2 19:59 发表
这种两级入轨、芯一级返回的方案,花费的成本与一次性火箭比,能低多少?

这个很难讲,按照这篇报道里的说法,火箭本身占了70%的发射费用,如果改成可复用的助推级,发射费用顶多减半
hkhtbbs 发表于 2009-1-10 23:00
发动机是否能多次使用?芯一级返回返回的成功率是多高?
Nighthawk 发表于 2009-1-10 23:03
原帖由 jingyan66 于 2009-1-2 12:08 发表
680RLV-TSTO(Two Stage To Orbit)


其实我挺fan这种方案的,只是我倾向于不是气动返回,而是降落伞+缓冲气囊,从文昌发射后落到海里,然后拖回来,跟RSRB似的。
Nighthawk 发表于 2009-1-10 23:38
原帖由 hkhtbbs 于 2009-1-10 23:00 发表
发动机是否能多次使用?芯一级返回返回的成功率是多高?


发动机肯定是能多次使用的,否则芯一级返回就没多大意思了。至于成功率……不好说,还真没人试过
jingyan66 发表于 2009-2-15 10:50
维客上有关AVATAR RLV的一些介绍:

http://en.wikipedia.org/wiki/Avatar_RLV
jingyan66 发表于 2009-2-19 15:12
A3的超音速冲压喷射发动机推迟到明年进行飞行试验

India plans delayed scramjet flight test for 2010


DATE:18/02/09
SOURCE:Flight International
By Radhakrishna Rao

India's first scramjet technology demonstrator will be flight-tested next year, four years later than planned and having failed to meet two previous targets, by the government-run Defence Research and Development Laboratory in Hyderabad.

The Indian military wants to use scramjet systems for a hypersonic missile. The first demonstrator flight test will be carried out at India's integrated test range on its east coast.

Flight International revealed in 2004 that the country had planned a 2006 scramjet test. When that failed to take place, Israel Aerospace Industries announced in 2007 it was helping India develop the technology for a first flight in 2008.

"The biggest challenge [will] be how to sustain stable combustion during the high-speed trans-atmospheric flight of the vehicle," says sources at the Indian government's Defence Research and Development Organisation, under which the laboratory operates.

India has longer-term plans to use scramjet technology for its proposed 25,000kg (55,000lb) spaceplane called Avatar, the Sanskrit word for a god who appears in bodily form on Earth. The spaceplane would ferry civilian and military satellites of about 1,000kg into a low Earth orbit.
jingyan66 发表于 2009-2-19 15:14
《飞行国际》上01年的一篇报道

India designs reusable spaceplane


DATE:21/08/01
SOURCE:Flight International

India has designed a 25t reusable horizontal take-off and landing, air-breathing orbital spaceplane, dubbed Avatar.

Powered initially by turbofan, ramjet and scramjet engines, its cryogenic engine would ignite at 33,000ft (10,000m) altitude, using 15t of onboard liquid hydrogen and 21t of atmosphere-derived liquid oxygen.

India first plans to develop a 3t "mini-Avatar" for demonstration purposes to be built by CIM Technologies within five years. The full-scale craft would require international funding for development in 10 years. Avatar would be able to fly 100 missions carrying up to 100t of payload.

Meanwhile, the Indian Space Research Organisation (ISRO) says the country's Polar Satellite Launch Vehicle, with alternate liquid- and solid-fuel stages, will launch the Indo-French atmospheric research satellite Megha Tropiques in 2005.

ISRO and French space agency CNES have signed a memorandum of understanding to design and develop the satellite, which will be based on CNES's Proteus platform.

From its orbit at 867km and an inclination of 20í, Megha Tropiques will collect atmosphere and climate data.
jingyan66 发表于 2009-2-19 15:28
2009 Aero India航展上RLV-TD的展板
img0024or7.jpg
jingyan66 发表于 2009-2-20 08:48
RLV-TD的首飞预计在2010~2012年进行

AERO INDIA: ISRO prepares to test reusable launch vehicle


DATE:19/02/09
SOURCE:Flight International

The Indian Space Research Organisation is hoping to begin demonstration flights of a reusable launch vehicle by 2012 as part of efforts to provide the country with lower-cost access to space.

ISRO is developing supersonic combustion ramjet (scramjet) technology and has carried out combustion flow simulations, as well as achieving supersonic combustion in ground tests.

The next step will be to perform flight tests of a scramjet engine demonstration vehicle, comprising a rocket fitted with an air-breathing engine. This will be followed by flights of the Reusable Launch Vehicle Technology Demonstrator, a 1:20 scale model of which was exhibited at Aero India.

Its maiden flight is planned for around 2010-12.
暗夜流星 发表于 2009-2-20 21:56
我觉得只要把发动机和电子舱回收就好了,空壳子扔掉算了。

其实我挺fan这种方案的,只是我倾向于不是气动返回,而是降落伞+缓冲气囊,从文昌发射后落到海里,然后拖回来,跟RSRB似的。
Nighthawk 发表于 2009-1-10 23:03
shh 发表于 2009-2-22 13:32
这类研究(包括我国的)最主要的目标是突破轨道升力返回技术,为跨大气层飞行器的研制打下基础。虽然最终可以用于可复用发射载具(比如美国的航天飞机),但是由于美国航天飞机的结局使得世界上并没有实际型号项目在进行。但是技术演示倒很多,我们的,印度的这个,欧洲计划在2010年进行的轨道升力返回试验IXV,加上日本以前进行的HYFLEX。各个国家一个都没落下。
zhangwee 发表于 2009-2-22 14:47
RLV-TD的展板的那个air-breathing engine应该是空气呼吸发动机,搞个外挂型的也不错,不想用就摘下来

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