RLV-TD

Автор Salo, 07.01.2015 00:26:28

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triage

Цитатаhttps://www.reddit.com/r/ISRO/comments/7r01u8/papers_on_rlvtd_mission_published_in_current/
The 10 January 2018 issue of the journal Current Science has a special section devoted to the Reusable Launch Vehicle - Technology Demonstrator that ISRO flight tested in May 2016:
Message - A.S. Kiran Kumar
Message - K. Sivan
Message - S. Pandian
Preface - B.N. Suresh
An overview of Reusable Launch Vehicle Technology Demonstrator by K. Sivan & S. Pandian
Aerodynamic design, characterization and flight performance of RLV-TD
Aerothermal design, qualification and flight performance
Flush air data sensing system
Development of slow-burning solid rocket booster for RLV-TD hypersonic experiment
Integrated electrohydraulic control actuation system with centralized power plant for the Reusable Launch Vehicle Technology Demonstrator
Mission design and performance of RLV-TD
Integrated navigation, guidance and control system and validation
An end-to-end airframe structural system design
Development of large-sized Titanium alloy Ti6Al4V and nickel-based superalloy Inconel-718 forgings for Reusable Launch Vehicle-Technology Demonstrator flight
Ceramic coating on flexible external insulation blankets for reusable missions
Quality assurance challenges in testing and evaluation of reusable launch vehicle systems
Часть долго скачивается, но статьи многостраничные

А тут деньги просят
ЦитатаThe Journal of Aerospace Sciences and Technologies too has published a RLV-TD special issue. But only the paper abstracts are available online without subscription.
ЦитатаAmazing haul! Didn't see this one among these.
"Development of RLV-TD Stage Separation System"
https://www.researchgate.net/publication/320807857_Development_of_RLV-TD_Stage_Separation_System
Edit: Direct link to issue
Volume 114 - Issue 01 : 10 January 2018
http://www.currentscience.ac.in/php/toc.php?vol=114&issue=01
На NSF в теме

ЦитатаSaurav Jha‏ @SJha1618
10:48 - 29 янв. 2018 г.

Here's an image of the RLV-TD undergoing tests in the reverberation chamber at NAL's acoustic test facility.

А древнее фото
Цитатаhttps://www.defenceaviation.com/2016/05/indias-attempt-to-develop-its-own-space-shuttle-the-reusable-launch-vehicle-technology-demonstrator-rlv-td.html

India's attempt to develop its own "Space Shuttle", The Reusable Launch Vehicle-Technology Demonstrator (RLV-TD)
Posted by: Larkins Dsouza May 23, 2016

Salo

https://www.thehindubusinessline.com/news/science/isro-moves-on-gears-up-to-test-semi-cryogenic-engine-in-ukraine/article29451601.ece#
Цитата...

A new AVATAR

ISRO's rocketry has many ambitious milestones to cross. First, there is the re-usable launch vehicle but the real meat is to come later, hopefully by 2025, when the AVATAR vehicle will become operational.

Jointly developed by ISRO and Defence Research and Development Organization (DRDO), AVATAR will be a space plane that can take off and land from airfields, like commercial aircraft. It will be a technological marvel, which will collect air on its way up, separate oxygen from it and store the gas on-board for space use.

Apart from bringing down the cost of launching satellites incredibly, to under $100 a kg, the AVATAR is also expected to make 'space solar stations' possible. These are solar power plants in space that will produce electricity and beam it down as microwaves.

Today, taking up tonnes of material to build such a station makes it uneconomical, but AVATAR could favourably invert the economics of it. Incidentally, China has made substantial progress in building the first ever SSS.

In the meantime, ISRO is also trying to master the technology for 'docking' with a space station, so that Indian astronauts and supplies can be ferried up and down. ISRO indeed has little time to grieve over Chandrayaan-2.

Published on September 19, 2019
"Были когда-то и мы рысаками!!!"

triage

Цитатаhttps://spacenews.com/india-outlines-launch-plans-progress-in-human-spaceflight-and-space-transportation/

by Andrew Jones -- February 27, 2020

HELSINKI -- India's launch plans for the coming year include a range of Earth observation, communication and navigation satellites according to an annual report.

Progress in the areas of space transportation and human spaceflight is also laid out in the Indian Space Research Organisation (ISRO) report.
...
In space transportation India is proceeding with a Reusable Launch Vehicle (RLV) project to demonstrate technologies for developing a wing body vehicle similar to that of an aircraft. A Landing Experiment to test autonomous landing at an airfield in Karnataka, southwest India following airdrop from a helicopter was stated to be planned for the last quarter of 2019. No update on its status or outcome was provided.
...
https://www.isro.gov.in/sites/default/files/flipping_book/annual_report_2019-20_english/index.html#68

triage

07.10.2020 23:05:05 #43 Последнее редактирование: 08.10.2020 05:53:51 от triage
Кажется треш и угар в тексте т.к. какой-то американский пример. Планируется сброс с вертолета и посадка на парашюте. Раньше на картинках на парашюте приземлялась вторая ступень или что-то другое

Цитата: undefinedhttps://swarajyamag.com/amp/story/insta%2Findias-own-space-shuttle-isro-likely-to-test-ground-landing-of-its-reusable-launch-vehicle-by-end-of-this-year

By IANS
October 07, 2020 at 4:23 PM

The Indian space agency is likely to test its reusable launch vehicle's (RLV) landing on the ground sometime in November or December 2020, said a senior official.

The Indian Space Research Organisation (ISRO) is targeting to build RLV similar to USA's space shuttle to put into orbit satellites and come back to land for the next mission. This in turn would bring down the satellite launch costs.

The two Indian rockets in service - Polar Satellite Launch Vehicle (PSLV) and Geosynchronous Satellite Launch Vehicle (GSLV) - and also the upcoming Small Satellite Launch Vehicle (SSLV) - are expendable ones.

"We are planning to test the Reusable Launch Vehicle's landing in Chitradurga District in Karnataka. We want to do the test in November/December this year," S Somanath, Director, Vikram Sarabhai Space Centre (VSSC) -- part of ISRO -- told IANS.

As per plans, the RLV will be lifted up by a helicopter and from the height of four km it will be released.

Post release by the helicopter, the RLV will glide and navigate towards the runway and land on its own in an airfield in Chitradurga District deploying its parachute, Somanath said.

According to ISRO, RLV Interface System (RIS) for interfacing with helicopter and Qualification Model of landing gear have been realised.

Simply put, RLV will ascend to orbit, stay there, re-enter and land on a runway like an aircraft. The technology has the challenges of meeting the complexities of both -- a rocket and an aircraft.

According to Somanath, about 30-40 ISRO officials have to be taken to Chitradurga and stay there for about two weeks.

In 2016, ISRO successfully tested RLV's descent from an altitude of 65 km, its atmospheric re-entry at around Mach 5 (five times the speed of sound).

According to ISRO, the vehicle's navigation, guidance and control system accurately steered the vehicle during this phase for safe descent.

After successfully surviving high temperatures of re-entry with the help of its Thermal Protection System (TPS), the vehicle successfully glided down to the defined landing spot over Bay of Bengal, at a distance of about 450km from Sriharikota in Andhra Pradesh.

Total flight duration from launch to landing of this mission lasted for about 770 seconds.

(This story has been published from a wire agency feed without modifications to the text. Only the headline has been changed.)