The latest test of India's existing cryogenic engine 'CE-20' adds more muscle to India's biggest and heaviest rocket, the LVM3 (earlier known as GSLV Mk3). The test has proven that the launch vehicle's payload capacity or ability to carry more cargo to space can be increased. &nbsp;

On request, an ISRO Official elaborated to WION about the major takeaways from the rocket engine test carried out by the Indian space agency on November 9.&nbsp;&nbsp;

The indigenously designed and developed LVM3 rocket has had a design load of carrying 4 tonnes to Geosynchronous Transfer Orbit (GTO) and almost 10 tonnes to Low Earth Orbit (LEO). However, the rocket has so far, in five launches to date, not flown with a full payload. &nbsp;

As the payload (satellite) is made for a certain purpose/mission, it would have a particular mass and it need not be as much as the entire carrying capacity of the rocket.&nbsp;&nbsp;

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<a href="https://twitter.com/hashtag/ISRO?src=hash&amp;ref_src=twsrc%5Etfw">#ISRO</a> announces successful test of the existing <a href="https://twitter.com/hashtag/indian?src=hash&amp;ref_src=twsrc%5Etfw">#indian</a> CE20 Cryogenic <a href="https://twitter.com/hashtag/rocket?src=hash&amp;ref_src=twsrc%5Etfw">#rocket</a> <a href="https://twitter.com/hashtag/engine?src=hash&amp;ref_src=twsrc%5Etfw">#engine</a> at higher-thrust of 21.8tons..This means, India's heaviest launcher LVM3 can lift more payload 
In a 1st, new Thrust Control Valve,3Dprinted parts used<a href="https://twitter.com/isro?ref_src=twsrc%5Etfw">@isro</a> <a href="https://twitter.com/hashtag/Video?src=hash&amp;ref_src=twsrc%5Etfw">#Video</a> of recent CE20 test <a href="https://twitter.com/isro?ref_src=twsrc%5Etfw">@isro</a> <a href="https://t.co/bqJeKn1Zpg">pic.twitter.com/bqJeKn1Zpg</a>
— Sidharth.M.P (@sdhrthmp) <a href="https://twitter.com/sdhrthmp/status/1590596000334630913?ref_src=twsrc%5Etfw">November 10, 2022</a></blockquote>
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In terms of the heaviest payloads carried by the LVM3 rocket, it had lifted 3.85 tonnes to GTO during Chandrayaan-2, India's second Lunar mission, and 5.8 tonnes to LEO, for the recent October-end commercial launch for 'OneWeb'. This means that the capability to lift more payload exists, but the vehicle has not yet had an opportunity to do so.&nbsp;&nbsp;

According to the ISRO Official, the latest test has further increased the design load of the LVM3 rocket. In layman's terms, the test has given ISRO the confidence to carry more payloads on LVM3 than the current limits. &nbsp;

"After this test, the design load of LVM3 to GTO is around 4.5 tonnes (up from 4 tons) and the design load to GTO is around 10.65 tonnes,” the ISRO official explained.&nbsp;&nbsp;

In terms of the engine being tested at a higher thrust, the official stated that it was good increase —-from the earlier 19 tonnes to 21.8 tonnes. The higher thrust is obtained by increasing the quantity of fuel being stored in the tanks and also by increasing the rate of flow of fuel to the engine. &nbsp;

"The propellant loading(fuel) was earlier 28 tonnes and now we are using 32 tonnes of fuel" the official added.&nbsp;&nbsp;

In order to increase the payload carrying capacity of the LVM3 rocket, ISRO is testing the CE-20 engine at higher thrusts and also working on developing a new Semi-cryogenic engine 'SC-120', which is meant to replace the existing L110 stage on the LVM3 rocket.&nbsp;&nbsp;

The&nbsp;GSLV&nbsp;Mk3&nbsp;rocket or LVM3&nbsp;is a three-stage heavy lift launch vehicle developed by ISRO. The vehicle has two solid 'S200' strap-on motors (burns solid fuel), 'L110' core-stage liquid booster (burns a combination of liquid fuels) and a 'C25' cryogenic upper stage (burns liquid hydrogen with liquid oxygen).&nbsp;

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The latest test of India's existing cryogenic engine 'CE-20' adds more muscle to India's biggest and heaviest rocket, the LVM3 (earlier known as GSLV Mk3). The test has proven that the launch vehicle's payload capacity or ability to carry more cargo to space can be increased.

The latest test of India's existing cryogenic engine 'CE-20' adds more muscle to India's biggest and heaviest rocket, the LVM3 (earlier known as GSLV Mk3). The test has proven that the launch vehicle's payload capacity or ability to carry more cargo to space can be increased. On request, an ISRO Official elaborated to WION about the major takeaways from the rocket engine test carried out by the Indian space agency on November 9. The indigenously designed and developed LVM3 rocket has had a design load of carrying 4 tonnes to Geosynchronous Transfer Orbit (GTO) and almost 10 tonnes to Low Earth Orbit (LEO). However, the rocket has so far, in five launches to date, not flown with a full payload. As the payload (satellite) is made for a certain purpose/mission, it would have a particular mass and it need not be as much as the entire carrying capacity of the rocket. #ISRO announces successful test of the existing #indian CE20 Cryogenic #rocket #engine at higher-thrust of 21.8tons..This means, India's heaviest launcher LVM3 can lift more payload In a 1st, new Thrust Control Valve,3Dprinted parts used@isro #Video of recent CE20 test @isro pic.twitter.com/bqJeKn1Zpg — Sidharth.M.P (@sdhrthmp) November 10, 2022 × In terms of the heaviest payloads carried by the LVM3 rocket, it had lifted 3.85 tonnes to GTO during Chandrayaan-2, India's second Lunar mission, and 5.8 tonnes to LEO, for the recent October-end commercial launch for 'OneWeb'. This means that the capability to lift more payload exists, but the vehicle has not yet had an opportunity to do so. According to the ISRO Official, the latest test has further increased the design load of the LVM3 rocket. In layman's terms, the test has given ISRO the confidence to carry more payloads on LVM3 than the current limits. "After this test, the design load of LVM3 to GTO is around 4.5 tonnes (up from 4 tons) and the design load to GTO is around 10.65 tonnes,” the ISRO official explained. In terms of the engine being tested at a higher thrust, the official stated that it was good increase —-from the earlier 19 tonnes to 21.8 tonnes. The higher thrust is obtained by increasing the quantity of fuel being stored in the tanks and also by increasing the rate of flow of fuel to the engine. "The propellant loading(fuel) was earlier 28 tonnes and now we are using 32 tonnes of fuel" the official added. In order to increase the payload carrying capacity of the LVM3 rocket, ISRO is testing the CE-20 engine at higher thrusts and also working on developing a new Semi-cryogenic engine 'SC-120', which is meant to replace the existing L110 stage on the LVM3 rocket. The GSLV Mk3 rocket or LVM3 is a three-stage heavy lift launch vehicle developed by ISRO. The vehicle has two solid 'S200' strap-on motors (burns solid fuel), 'L110' core-stage liquid booster (burns a combination of liquid fuels) and a 'C25' cryogenic upper stage (burns liquid hydrogen with liquid oxygen). WATCH WION LIVE HERE:

ISRO’s LVM3 rocket gains more lifting power; here’s how much it can carry

The Indian Space Research Organisation (ISRO) has short-listed 20 space-based experiment proposals, including from France, for its proposed Venus orbiter mission 'Shukrayaan' to study the planet for more than four years.

These include "collaborative contributions" from Russia, France, Sweden and Germany, sources in the Bengaluru- headquartered space agency said.

ISRO was earlier eyeing June 2023 for the country's first mission to Venus.

"But we are currently reviewing this mission timeline due to delays arising from the pandemic situation", an ISRO official said.

"Future launch opportunity is either in 2024 or 2026".

It was noted that the optimal launch window (when Venus is closest to the Earth) comes about every 19 months.

Of the Indian and international payload proposals it received in response to an announcement of opportunity for novel space-based experiments to study Venus, ISRO has shortlisted 20.

"These 20 payload (scientific instruments) proposals, including collaborative contributions from Russia, France, Sweden and Germany, are currently under review", the ISRO official said.

The one already selected, according to French space agency CNES, is France's VIRAL instrument (Venus Infrared Atmospheric Gas Linker) co-developed with the Russian space agency Roscosmos, and the LATMOS atmospheres, environments and space observations laboratory attached to the French national scientific research centre CNRS.

"Swedish Institute of Space Physics is engaged with India's mission to Venus", sources said.

According to ISRO, scientific objectives of ISRO's Venus mission are an investigation of the surface processes and shallow subsurface stratigraphy; and solar wind interaction with Venusian Ionosphere, and studying the structure, composition and dynamics of the atmosphere.

Venus is often described as the "twin sister" of the Earth because of the similarities in size, mass, density, bulk composition and gravity.

It is believed that both planets share a common origin, forming at the same time out of a condensing nebulosity around 4.5 billion years ago, ISRO had noted in its announcement of opportunity.

Venus is around 30 per cent closer to the Sun as compared to Earth resulting in much higher solar flux.

Exploration of Venus began in the early 1960s.

Venus has been explored by flyby, orbiter, a few lander missions and atmospheric probes.

"In spite of great progress made in exploring Venus, there still exist gaps in our basic understanding about surface/sub-surface features and processes, super-rotation of the Venusian atmosphere and its evolution and interaction with solar radiation/solar wind", ISRO had said.

The payload capability of the proposed 2500-kg satellite, planned to be launched onboard GSLV Mk II rocket, is likely to be 175 kg with 500W of power.

The proposed orbit is expected to be around 500 x 60,000 km around Venus.

This orbit is likely to be reduced gradually, over several months to a lower apoapsis (farthest point).

The Indian Space Research Organisation (ISRO) has short-listed 20 space-based experiment proposals, including from France, for its proposed Venus orbiter mission 'Shukrayaan' to study the planet for more than four years.

The Indian Space Research Organisation (ISRO) has short-listed 20 space-based experiment proposals, including from France, for its proposed Venus orbiter mission 'Shukrayaan' to study the planet for more than four years. These include "collaborative contributions" from Russia, France, Sweden and Germany, sources in the Bengaluru- headquartered space agency said. ISRO was earlier eyeing June 2023 for the country's first mission to Venus. "But we are currently reviewing this mission timeline due to delays arising from the pandemic situation", an ISRO official said. "Future launch opportunity is either in 2024 or 2026". It was noted that the optimal launch window (when Venus is closest to the Earth) comes about every 19 months. Of the Indian and international payload proposals it received in response to an announcement of opportunity for novel space-based experiments to study Venus, ISRO has shortlisted 20. "These 20 payload (scientific instruments) proposals, including collaborative contributions from Russia, France, Sweden and Germany, are currently under review", the ISRO official said. The one already selected, according to French space agency CNES, is France's VIRAL instrument (Venus Infrared Atmospheric Gas Linker) co-developed with the Russian space agency Roscosmos, and the LATMOS atmospheres, environments and space observations laboratory attached to the French national scientific research centre CNRS. "Swedish Institute of Space Physics is engaged with India's mission to Venus", sources said. According to ISRO, scientific objectives of ISRO's Venus mission are an investigation of the surface processes and shallow subsurface stratigraphy; and solar wind interaction with Venusian Ionosphere, and studying the structure, composition and dynamics of the atmosphere. Venus is often described as the "twin sister" of the Earth because of the similarities in size, mass, density, bulk composition and gravity. It is believed that both planets share a common origin, forming at the same time out of a condensing nebulosity around 4.5 billion years ago, ISRO had noted in its announcement of opportunity. Venus is around 30 per cent closer to the Sun as compared to Earth resulting in much higher solar flux. Exploration of Venus began in the early 1960s. Venus has been explored by flyby, orbiter, a few lander missions and atmospheric probes. "In spite of great progress made in exploring Venus, there still exist gaps in our basic understanding about surface/sub-surface features and processes, super-rotation of the Venusian atmosphere and its evolution and interaction with solar radiation/solar wind", ISRO had said. The payload capability of the proposed 2500-kg satellite, planned to be launched onboard GSLV Mk II rocket, is likely to be 175 kg with 500W of power. The proposed orbit is expected to be around 500 x 60,000 km around Venus. This orbit is likely to be reduced gradually, over several months to a lower apoapsis (farthest point).

India's proposed Venus mission attracts international payload proposals

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