The Space Capsule Recovery Experiment II (commonly known as SRE-2) was an Indian re-entry demonstration experiment designed by the Indian Space Research Organisation (ISRO). It was a follow-on mission of SRE-1 which was successfully completed in January 2007. It was supposed to test some of the critical technologies for the

Indian human spaceflight programme The Indian Human Spaceflight Programme (IHSP) was initiated in 2007 by the Indian Space Research Organisation (ISRO) to develop the technology needed to launch crewed orbital spacecraft into low Earth orbit. The first uncrewed flight, named Ga ...

. The second mission was to carry three experiments devoted to biological science and an improved isothermal furnace with 1000 °C temperature to carry out materials science experiments. As of August 2016, SRE-2 is not mentioned in the ISRO official page.

Comptroller and Auditor General of India The Comptroller and Auditor General of India is the supreme audit institution of India, established under Article 148 of the Constitution of India. They are empowered to audit all receipts and expenditure of the Government of India and the ...

released a report titled "Inordinate delay in realisation of SRE-2 mission" in 2014. Outcome Budget 2016-17 of Department of Space mentions that development of space grade color camera and image storage unit for SRE-2 would be undertaken during year 2016-17. On 4 January 2018, SRE-2 project was declared to be cancelled.

Objectives

The main objective of SRE-2 was to realise a fully recoverable capsule and provide a platform to conduct microgravity experiments on Microbiology, Agriculture, Powder Metallurgy etc.

Design

SRE-2 capsule would have four major pieces of hardware: * Aero Thermo Structure (ATS) * Spacecraft platform * Deceleration and flotation system * Microgravity payloads New systems developed for SRE-2 included Carbon-Carbon Nosecone, Indigenous Beacons, etc.

Payloads

The SRE-2 was to carry three experiments devoted to biological science and an improved isothermal furnace with 1000 °C temperature to carry out materials science experiments. * The first experiment “Biological effects of Microgravity: A genomic and proteomics approach” is being developed in collaboration with CCMB,

Hyderabad Hyderabad ( ; , ) is the capital and largest city of the Indian state of Telangana and the ''de jure'' capital of Andhra Pradesh. It occupies on the Deccan Plateau along the banks of the Musi River, in the northern part of Southern India ...

and a biorack is being developed to enable this experiment. In this experiment, a colony of E. coli

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one Cell (biology), biological cell. They constitute a large domain (biology), domain of prokaryotic microorganisms. Typically a few micrometr ...

will be grown in microgravity condition and brought back to earth to carry out genomic and proteomic studies. Comparison of these with that obtained during bench mark ground experiments will enable us to identify the genes whose expression is affected by the microgravity. This experiment is designed to explore why microgravity alters some of the growth behaviour of the biological system. * A second experiment will carry a joint biological payload between JAXA, and Indian Scientists at ISRO and CCMB. The payload is being developed by JAXA with close interaction with ISRO engineers. The experiment will carry cynobacteria which will be cultured under microgravity condition. The aim is to study the effect of microgravity on the photosynthetic ability of these bacteria. * The third experiment will carry seeds of

rice Rice is the seed of the grass species '' Oryza sativa'' (Asian rice) or less commonly ''Oryza glaberrima'' (African rice). The name wild rice is usually used for species of the genera '' Zizania'' and '' Porteresia'', both wild and domesticat ...

and medicinal plants that will be exposed both to microgravity and space radiation. A

dosimeter A radiation dosimeter is a device that measures dose uptake of external ionizing radiation. It is worn by the person being monitored when used as a personal dosimeter, and is a record of the radiation dose received. Modern electronic personal d ...

will measure the amount of radiation. The exposed seeds will be planted on return and the growth of these plants will be compared with the plants of the unexposed seeds to evaluate the effect of microgravity and space radiation. The materials science experiments will be carried out in the modified isothermal furnace. The main experiment by scientists at

IIT Kanpur The Indian Institute of Technology Kanpur (IIT Kanpur) Hindi: भारतीय प्रौद्योगिकी संस्थान कानपुर) is a public institute of technology located in Kanpur, Uttar Pradesh, India. It was ...

, is designed to study the effect of gravity on the liquid phase

sintering Clinker nodules produced by sintering Sintering or frittage is the process of compacting and forming a solid mass of material by pressure or heat without melting it to the point of liquefaction. Sintering happens as part of a manufacturing ...

behaviour of the powders. A model

copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...

tin Tin is a chemical element with the symbol Sn (from la, stannum) and atomic number 50. Tin is a silvery-coloured metal. Tin is soft enough to be cut with little force and a bar of tin can be bent by hand with little effort. When bent, t ...

alloy will be studied to explore the basic nature of the sintering process which has important implication in powder metallurgy.

References

Sources

The SRE-2 Mission

{{DEFAULTSORT:Space Capsule Recovery Experiment Ii Satellites of India Cancelled space missions Projects disestablished in 2018

Objectives

Design

Payloads

See also

References

Sources