ISRO General News and Updates

DumbPilot

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CY-2 orbiter also carried same L&S band SAR payload similar to that of NISAR's payload although smaller one
You should look at that the data that's come out of imaging in CY-2 orbiter's DFSAR. Simply marvellous:


Other instrument data is also available there. Need to make an account first.
 

Blademaster

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Nisar project. Worlds most expensive satellite

That would be the James Webb Space Telescope. It costs a whopping $11 billion. The next most expensive is the Hubble Space Telescope which originally costed $2 billion dollars to build and costed well over to $10 billion after upgrades & operational costs are taken into account. Then you had the Chandra X ray Observatory which costed $1.65 billion.
 

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That would be the James Webb Space Telescope. It costs a whopping $11 billion. The next most expensive is the Hubble Space Telescope which originally costed $2 billion dollars to build and costed well over to $10 billion after upgrades & operational costs are taken into account. Then you had the Chandra X ray Observatory which costed $1.65 billion.
NISAR is at 2.5 Bilion USD, most expensive earth observation satellite
 

Blademaster

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NISAR is at 2.5 Bilion USD, most expensive earth observation satellite
Where did you get the $2.5 billion figure? Most news sources say it is $1.5 billion. Yes it is the most expensive earth observation satellite but not the most expensive satellite.
 

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Where did you get the $2.5 billion figure? Most news sources say it is $1.5 billion. Yes it is the most expensive earth observation satellite but not the most expensive satellite.
trust me vro
 

Tejbrahmastra

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You are partially wrong about Ariane-Next, their Prometheus engine which was meant for Ariane-Next was already tested, their next step is VTVL technology demonstrator, Ariane-Next is definitely NOT on paper,active work is going on in that front

Just because Rocketlab only launched a small rocket, that doesn't mean they can't build Neutron, they will recieve all required technical assistance & as well as financial support from US govt to develop the engine as well as the LV,so it cannot be underestimated....

As far as the NGLV is concerned, watch ISRO chief's interview with GS, he clearly mentioned the it won't take beyond 10 years to develop NGLV.....from his words, Dr. Somanath is pretty much confident about both NGLV & Methalox engine....note that PDR of the engine is completed & detailed design work is going on.....he also said that SCE-200 will be shortlived
As per the hint, they will use the existing CE20 engine to test the initial Methalox engine and then the experience gained in the SCE to make the 100T Methalox engine. The learning curve will shorter this time probably. Also, lot of startups are coming, whose RnD may help!!
 

Vamsi

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As per the hint, they will use the existing CE20 engine to test the initial Methalox engine and then the experience gained in the SCE to make the 100T Methalox engine. The learning curve will shorter this time probably. Also, lot of startups are coming, whose RnD may help!!
They already tested the CE-20 derived Methalox engine, the PDR for 100T thrust Methalox engine is already completed
 

chewi

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Chandrayaan-3 completes its orbits around the Earth and heads towards the Moon.
A successful perigee-firing performed at ISTRAC, ISRO has injected the spacecraft into the translunar orbit.
Next stop: the Moon
As it arrives at the moon, the Lunar-Orbit Insertion (LOI) is planned for Aug 5, 2023.
cy3.jpg
 

Vamsi

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As per NSIL director, next year we might have another commerical LVM-3 launch, it's looks like LVM-3 gonna eat Ariane-6(2)'s launch market ,if true next year also we will have atleast 2 LVM-3 launches, G1 launch & commerical launch


 

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Varoon2

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Question can be placed under another subject heading.

Will there be anything novel/ innovative about the Aditya satellite, to be launched next month? In its positioning, payloads, orbit etc, even the mission itself?
 

Vamsi

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As per Physical Research Laboratory's website these payloads are approved for Shukrayaan & Mangalyaan-2 missions
Venus Orbitor Mission
PRL has proposed the following instruments for Venus Orbiter Mission. These instrument have been reviewed by the expert committee and also by the APEX. The following instruments are shortlisted to be flown fly in Venus Orbiter mission.​
Venus Orbit Dust Experiment (VODEX)
It is proposed to understand the interplanetary dust flux at Venus and its possible distribution around Venus. There are no measurements of Interplanetary Dust Particles (IDPs) at Venus. The instrument can detect particles of size from few hundreds nm to few Β΅m, travelling at hypervelocity (> 1 km/s). The outcomes can help explain the dust flux at Venus and whether there is any ring around Venus. The study of dust can help explain the RO experiment results.​
Lightning Instrument for Venus (LIVE)
This experiment will measure the lightning spectrum and its frequency of occurrence on Venus. There are few measurements which indicate the presence of lightning on Venus however, they are controversial. The lightning gives energy to the atmosphere and the chemistry may be modified.​
Venus Radiation environment monitor (VeRad)
To measure the high energy particles entering in to the Venus atmosphere in the energy range of 100 keV to 100 MeV and to study their effects in the enhancement of ionization rates on the Venus atmosphere. This is the first time such measurement will be carried out in the close vicinity. This instrument also aims at measuring the radiation levels en-route to the Venus. The wide dynamic range will be covered will be covered with stack of Si PIN detectors and Scintillator detectors.​
Venus Solar Soft x-ray Spectrometer (VS3)
To study the effect of solar X-rays on the Venus atmosphere in the energy range of 1 to 15 keV with high energy resolution and high cadence measurements. No simultaneous measurement of Solar X-ray flux and the electron density has been attempted.​
Retarding Potential Analyser (RPA)
In situ investigation of ion densities (O2+, O+, CO2+ and H+) and the plasma temperature of the upper atmospheres. This instrument is being developed by IIST and PRL is responsible for data analysis and science.​
Venus Neutral and Ion Mass Analyzer (VENIMA)
To measure the composition, structure, variability and the thermal state of the Venus atmosphere and its dynamics by measuring the ions and neutrals with mass resolution of >100 from the orbiter satellite. Discussion with SPL/VSSC is underway to explore the facility of combining the developments both at PRL and SPL.​

Mars Orbiter Mission-2
PRL has proposed and developing the following instruments for second Indian Mars Orbiter Mission (MOM-2). These instruments have been selected for MOM-2 and are at various stages of the development.​
Mars Orbit Dust Experiment (MODEX)
To understand origin, abundance, distribution and flux at high altitudes on Mars, a MODEX is proposed. There are no measurements of Interplanetary Dust Particles (IDPs) at Mars. The instrument can detect particles of size from few hundreds nm to few Β΅m, travelling at hypervelocity (> 1 km/s). The outcomes can help explain the dust flux at Mars, whether there is any ring (as hypothesized) around Mars and also confirm whether the dust is interplanetary or coming from the Phobos/Deimos. The study of dust can help explain the RO experiment results.​
Radio Occultation (RO) Experiment
To measure the neutral and electron density profiles, the RO is proposed. The instrument is microwave transmitter (or receiver as per option) on board, operating at X-band frequency and it can provide the bending angle due to the Martian atmosphere. It can help understand the behaviour of the Martian atmosphere.​
Energetic Ion Spectrometer (EIS)
To characterize SEPs and supra-thermal solar wind particles at the Martian environment and to understand their role in the loss of Martian atmosphere. This instrument will measure high-energy charge particles in the energy range of 20 keV to 20 MeV.​
Langmuir Probe and Electric Field Experiment (LPEX)
To measure electron number density (Ne), electron temperature (Te), electric field waves in order to understand the Martian plasma environment. LPEX experiment consists of one Langmuir probe (LP) and two electric field (EF) sensors each mounted on a long boom.​
 

Vamsi

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I think the following payloads might be related to venus baloon probe

Other Missions
PRL has proposed the following instruments for Venus Orbiter Mission. These instrument have been reviewed by the expert committee and also by the APEX. The following instruments are shortlisted to be flown fly in Venus Orbiter mission.​
Venus Cloud Dynamics and Meteorology Experiment (VEDAM)
VEDAM is a meteorological suite with additional local imaging, wind velocity and particle size measurements. VEDAM consists Meteorology Suite (MET) - Temperature, Pressure, Ambient Light/Solar Radiation, Anemometer (ANEM) - Horizontal and Vertical Wind velocities and Nephelometer (NEPH) - Size and distributions of Venus cloud particles.​
Miniature Neutral Mass spectrometer (MNMS)
This instrument will determine in-situ abundances of neutral species in the upper troposphere, Search for the presence of Sulphur and Chlorine compounds and Study of dynamics of the middle atmosphere of Venus clouds and their formation of different layers.​
Gamma-Ray Spectrometer for planetary Mission using scintillation detector
Knowledge of elements such as Si, O, Ca, Mg, Al, Fe, Na, K, Th help in deciphering the origin and evolution of various solar system objects such as planets, satellites, and asteroids. A Gamma-ray spectrometer (GRS) is being developed to be flown on a future missions such a measurement. laboratory model of GRS has been developed using recently developed rare earth halide scintillation crystal. For this, three crystal LaBr3:Ce, NaI(Tl), and CeBr3 have been used to detect gamma-ray photons. Our study shows that CeBr3 is a better choice compared to other scintillators particularly for estimating the concentration of K. U and Th from rock/soil.​
 

Indx TechStyle

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As per Physical Research Laboratory's website these payloads are approved for Shukrayaan & Mangalyaan-2 missions
Venus Orbitor Mission
PRL has proposed the following instruments for Venus Orbiter Mission. These instrument have been reviewed by the expert committee and also by the APEX. The following instruments are shortlisted to be flown fly in Venus Orbiter mission.​
Venus Orbit Dust Experiment (VODEX)

It is proposed to understand the interplanetary dust flux at Venus and its possible distribution around Venus. There are no measurements of Interplanetary Dust Particles (IDPs) at Venus. The instrument can detect particles of size from few hundreds nm to few Β΅m, travelling at hypervelocity (> 1 km/s). The outcomes can help explain the dust flux at Venus and whether there is any ring around Venus. The study of dust can help explain the RO experiment results.​
Lightning Instrument for Venus (LIVE)

This experiment will measure the lightning spectrum and its frequency of occurrence on Venus. There are few measurements which indicate the presence of lightning on Venus however, they are controversial. The lightning gives energy to the atmosphere and the chemistry may be modified.​
Venus Radiation environment monitor (VeRad)

To measure the high energy particles entering in to the Venus atmosphere in the energy range of 100 keV to 100 MeV and to study their effects in the enhancement of ionization rates on the Venus atmosphere. This is the first time such measurement will be carried out in the close vicinity. This instrument also aims at measuring the radiation levels en-route to the Venus. The wide dynamic range will be covered will be covered with stack of Si PIN detectors and Scintillator detectors.​
Venus Solar Soft x-ray Spectrometer (VS3)

To study the effect of solar X-rays on the Venus atmosphere in the energy range of 1 to 15 keV with high energy resolution and high cadence measurements. No simultaneous measurement of Solar X-ray flux and the electron density has been attempted.​
Retarding Potential Analyser (RPA)

In situ investigation of ion densities (O2+, O+, CO2+ and H+) and the plasma temperature of the upper atmospheres. This instrument is being developed by IIST and PRL is responsible for data analysis and science.​
Venus Neutral and Ion Mass Analyzer (VENIMA)

To measure the composition, structure, variability and the thermal state of the Venus atmosphere and its dynamics by measuring the ions and neutrals with mass resolution of >100 from the orbiter satellite. Discussion with SPL/VSSC is underway to explore the facility of combining the developments both at PRL and SPL.​

Mars Orbiter Mission-2
PRL has proposed and developing the following instruments for second Indian Mars Orbiter Mission (MOM-2). These instruments have been selected for MOM-2 and are at various stages of the development.​
Mars Orbit Dust Experiment (MODEX)

To understand origin, abundance, distribution and flux at high altitudes on Mars, a MODEX is proposed. There are no measurements of Interplanetary Dust Particles (IDPs) at Mars. The instrument can detect particles of size from few hundreds nm to few Β΅m, travelling at hypervelocity (> 1 km/s). The outcomes can help explain the dust flux at Mars, whether there is any ring (as hypothesized) around Mars and also confirm whether the dust is interplanetary or coming from the Phobos/Deimos. The study of dust can help explain the RO experiment results.​
Radio Occultation (RO) Experiment

To measure the neutral and electron density profiles, the RO is proposed. The instrument is microwave transmitter (or receiver as per option) on board, operating at X-band frequency and it can provide the bending angle due to the Martian atmosphere. It can help understand the behaviour of the Martian atmosphere.​
Energetic Ion Spectrometer (EIS)

To characterize SEPs and supra-thermal solar wind particles at the Martian environment and to understand their role in the loss of Martian atmosphere. This instrument will measure high-energy charge particles in the energy range of 20 keV to 20 MeV.​
Langmuir Probe and Electric Field Experiment (LPEX)

To measure electron number density (Ne), electron temperature (Te), electric field waves in order to understand the Martian plasma environment. LPEX experiment consists of one Langmuir probe (LP) and two electric field (EF) sensors each mounted on a long boom.​
I think the following payloads might be related to venus baloon probe

Other Missions
PRL has proposed the following instruments for Venus Orbiter Mission. These instrument have been reviewed by the expert committee and also by the APEX. The following instruments are shortlisted to be flown fly in Venus Orbiter mission.​
Venus Cloud Dynamics and Meteorology Experiment (VEDAM)

VEDAM is a meteorological suite with additional local imaging, wind velocity and particle size measurements. VEDAM consists Meteorology Suite (MET) - Temperature, Pressure, Ambient Light/Solar Radiation, Anemometer (ANEM) - Horizontal and Vertical Wind velocities and Nephelometer (NEPH) - Size and distributions of Venus cloud particles.​
Miniature Neutral Mass spectrometer (MNMS)

This instrument will determine in-situ abundances of neutral species in the upper troposphere, Search for the presence of Sulphur and Chlorine compounds and Study of dynamics of the middle atmosphere of Venus clouds and their formation of different layers.​
Gamma-Ray Spectrometer for planetary Mission using scintillation detector

Knowledge of elements such as Si, O, Ca, Mg, Al, Fe, Na, K, Th help in deciphering the origin and evolution of various solar system objects such as planets, satellites, and asteroids. A Gamma-ray spectrometer (GRS) is being developed to be flown on a future missions such a measurement. laboratory model of GRS has been developed using recently developed rare earth halide scintillation crystal. For this, three crystal LaBr3:Ce, NaI(Tl), and CeBr3 have been used to detect gamma-ray photons. Our study shows that CeBr3 is a better choice compared to other scintillators particularly for estimating the concentration of K. U and Th from rock/soil.​
Both missions are still going be revised greatly and we won't see them anytime soon. Venue one will be re-engineered as a bigger mission as launch window lies in 2031 and MOM-2 hasn't impressed Somanath so much.
 

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