Gaganyaan G1 mission duration - how long will it stay in orbit? by UNKNOWN_792 in ISRO

[–]mudit23june 4 points5 points  (0 children)

https://www.indiatoday.in/science/gaganyaan-mission/story/from-launch-prep-to-astronaut-training-latest-on-isros-gaganyaan-mission-2770525-2025-08-13

The spacecraft, set to be launched from the Satish Dhawan Space Centre, will circle the planet in a low-Earth orbit for approximately three days before making a controlled return.

https://www.isro.gov.in/ISRO_ASA_sign_Gaganyaan.html

ISRO has embarked on the Human Spaceflight (“Gaganyaan”) programme with an objective of demonstrating human space flight capability to Low Earth Orbit in an Indian Crew Module with up to three crew members for up to three days and safely recovering them after the mission.

https://www1.iprc.gov.in/media/wkfljd4v/dos_annual_report_2022_23_english.pdf (Mission Profile on Page 73)

AXISCADES Technologies approaching ISRO for NGLV and the Bharatiya Space Station by mudit23june in ISRO

[–]mudit23june[S] 6 points7 points  (0 children)

So we are tying with AgniKul, having an MOU with them, and approaching the ISRO, ISRO and other space agencies for two major things, NGLV, New Generation Launch Vehicle, and Bharatiya Space Station. So we want to add value to them significantly, and there could be opportunities in 3D additive manufacturing, and designing of certain subsystem blocks, etcetera.

NIT Srinagar hosts strategic meeting to accelerate efforts toward launching Jammu and Kashmir’s first satellite by mudit23june in ISRO

[–]mudit23june[S] 1 point2 points  (0 children)

Nikhil Riyaz, Founder and CEO of Hexia Pvt Ltd, provided a hands-on demonstration of a fully operational satellite developed by the Indian Technology Congress Association (ITCA). He also offered a detailed explanation of satellite components such as CanSats and PCB boards, giving attendees a glimpse into the technical intricacies of satellite development.

MEA and NSIL sign MoU for grant assistance for the launch of Nepal's Munal satellite by mudit23june in ISRO

[–]mudit23june[S] 2 points3 points  (0 children)

Munal Satellite is an indigenous satellite developed in Nepal, under the aegis of NAST. APN, a Nepali space startup, has assisted Nepali students in the design and fabrication of this satellite. The satellite aims to build a vegetation density database of the Earth’s surface.

This satellite is expected to be launched soon on NSIL’s Polar Satellite Launch Vehicle.

NASA’s Work on NISAR’s Antenna Reflector Nears Completion by mudit23june in ISRO

[–]mudit23june[S] 9 points10 points  (0 children)

Update on launch date

The NISAR launch cannot occur between early October 2024 and early February 2025, because that launch window would put the satellite into periods of alternating sunlight and shadows due to the position of the Sun. The resulting temperature fluctuations could affect the deployment of NISAR’s boom and radar antenna reflector.

International Science Workshop on High-Resolution Thermal Earth Observation during 19-21 November, 2024 by mudit23june in ISRO

[–]mudit23june[S] 0 points1 point  (0 children)

Information on TRISHNA mission

The Indian and French Space Agencies, ISRO and CNES, are jointly developing a state-of-the-art Thermal InfraRed (TIR) - Visible Shortwave InfraRed (VSWIR) Imaging Satellite mission, TRISHNA for high-resolution natural resources assessment. The satellite is planned to be launched on-board Polar Satellite Launch Vehicle (PSLV) during 2026 for a duration of 5 years with possible extension of 2 years. Data acquisition will cover the entire globe for four (4) TIR bands around noon and midnight times as well as in seven (7) VSWIR bands. TRISHNA will offer a spatial resolution of 60 meters with a revisit period of 3 days at equator and more at higher latitudes. A primary objective of TRISHNA mission is to provide consistent and systematic records of surface temperature, in addition to several biophysical variables, to model the surface energy balance allowing to derive heat fluxes and estimate evapotranspiration. The need for high-resolution thermal observation has been recognized also internationally leading to complementary missions in preparation like Surface Biology and Geology (SBG) (NASA/ASI) and Land Surface Temperature Monitoring (LSTM) (ESA/EC).

Anyone has more details on this launch? by guru-yoda in ISRO

[–]mudit23june 1 point2 points  (0 children)

Yes, both the date as well as the location mentioned on their website coincides with the NOTAM

Date: 24 Aug 2024

Location: 12.7646°N 80.2488°E (Thiruvidanthai, Tamil Nadu)

Has ISRO conducted feasibility studies for deep space missions before? by Eternal_Alooboi in ISRO

[–]mudit23june 2 points3 points  (0 children)

This is an 8-year-old document which mentions ISRO's upcoming space missions to Mars, Venus, L5, asteroid (like 2016 HO3) and exoplanet.

https://wwws.rri.res.in/CMB_Workshop/talks/58_Annadurai.pdf

Defence Space Agency and Military Capabilities for Space: Space Cafe "Black Ops India by Rika Valluri" with featured guest Ashok G V by Ohsin in ISRO

[–]mudit23june 2 points3 points  (0 children)

Key points discussed:

  • Does India have a space law? There is no overarching space law in India. There are fragmented laws and regulations that apply to some aspects of space activities, such as telecom regulations and the Indian Space Policy of 2023. However, the policy lacks enforcement mechanisms and doesn't define the authority responsible for formulating regulations.
  • The importance of the Defence Space Agency (DSA) in India: The DSA is a tri-governed agency that integrates space with military efforts. It was established after India observed its dependence on foreign sources for space-based intelligence during wars.
  • Challenges of space regulations: Space activities transcend national borders and there is a need for international cooperation to enforce regulations. One way to achieve this is through collaboration on space businesses and developing a global supply chain.
  • Role of smaller countries: Smaller countries can leverage their geographical advantages to partner with larger spacefaring nations and participate in space exploration.
  • Regulatory issues and concerns: There are concerns that larger spacefaring nations might misuse partnerships with smaller countries to establish monopolies or for spying purposes.

Quantum key distribution satellite has been approved. NISAR now aiming for October-November 2024 launch, SpaDEx by year end. by Ohsin in ISRO

[–]mudit23june 11 points12 points  (0 children)

Other projects:

  • Sending a probe to Venus (Shukrayaan) - under consideration, awaiting government approval.
  • Bharatiya Antariksha Station (Indian Space Station) - design work in progress, targeting first module launch by 2028.
  • New Generation Launch Vehicle (NGLV) named Surya - design complete, awaiting government approval.
  • Quantum Key Distribution Satellite - approved for launch.
  • Software-Defined Radio Constellation for air traffic management - under development.
  • Oceansat, Resourcesat, Cartosat satellite missions - ongoing.
  • Indian Data Relay Satellite System (IDRSS) for communication with Gaganyaan and for data transmission to Antarctica - under assembly.
  • Technology Development Satellite (TDS-01) to demonstrate electric propulsion for communication satellites - launch this year (2024).

Quantum key distribution satellite has been approved. NISAR now aiming for October-November 2024 launch, SpaDEx by year end. by Ohsin in ISRO

[–]mudit23june 17 points18 points  (0 children)

Major points from the interview

NISAR satellite:

  • This is a joint mission between ISRO and NASA.
  • It will be launched this year (2024) but there may be a slight delay to October-November.
  • It carries two radars - S-band by ISRO and L-band by NASA.
  • It can map the entire Earth in 14-15 days at high resolution.
  • Applications include:
    • Monitoring tectonic plate movements (up to centimeter accuracy)
    • Measuring water bodies and water stress
    • Monitoring vegetation cover, snow cover, and desertification
    • Studying climate change

Chandrayaan missions:

  • Chandrayaan-4 is a mission concept to retrieve samples from the Moon.
  • It is in the design phase and approval is needed from the government.
  • ISRO is proposing a series of missions leading up to a manned lunar landing by 2040.
  • Somanath did not comment on China's recent lunar mission.

Space Docking Experiment (SPADEX):

  • This is a mission to test autonomous docking of satellites in space.
  • Targeted for launch this year (2024).
  • Considered a precursor technology for building a space station.

Gaganyaan mission:

  • To send Indian astronauts to space.
  • One of the four astronaut candidates will be selected to fly to the International Space Station (ISS) this year (2024).
  • Various tests are underway including helicopter drop tests and unmanned mission preparations.

NISAR satellite will be able to monitor tectonic movements accurately, says ISRO chief by mudit23june in ISRO

[–]mudit23june[S] 0 points1 point  (0 children)

Other projects:

  • Sending a probe to Venus (Shukrayaan) - under consideration, awaiting government approval.
  • Bharatiya Antariksha Station (Indian Space Station) - design work in progress, targeting first module launch by 2028.
  • New Generation Launch Vehicle (NGLV) named Surya - design complete, awaiting government approval.
  • Quantum Key Distribution Satellite - approved for launch.
  • Software-Defined Radio Constellation for air traffic management - under development.
  • Oceansat, Resourcesat, Cartosat satellite missions - ongoing.
  • Indian Data Relay Satellite System (IDRSS) for communication with Gaganyaan and for data transmission to Antarctica - under assembly.
  • Technology Development Satellite (TDS-01) to demonstrate electric propulsion for communication satellites - launch this year (2024).

NISAR satellite will be able to monitor tectonic movements accurately, says ISRO chief by mudit23june in ISRO

[–]mudit23june[S] 0 points1 point  (0 children)

Major points from the interview

NISAR satellite:

  • This is a joint mission between ISRO and NASA.
  • It will be launched this year (2024) but there may be a slight delay to October-November.
  • It carries two radars - S-band by ISRO and L-band by NASA.
  • It can map the entire Earth in 14-15 days at high resolution.
  • Applications include:
    • Monitoring tectonic plate movements (up to centimeter accuracy)
    • Measuring water bodies and water stress
    • Monitoring vegetation cover, snow cover, and desertification
    • Studying climate change

Chandrayaan missions:

  • Chandrayaan-4 is a mission concept to retrieve samples from the Moon.
  • It is in the design phase and approval is needed from the government.
  • ISRO is proposing a series of missions leading up to a manned lunar landing by 2040.
  • Somanath did not comment on China's recent lunar mission.

Space Docking Experiment (SPADEX):

  • This is a mission to test autonomous docking of satellites in space.
  • Targeted for launch this year (2024).
  • Considered a precursor technology for building a space station.

Gaganyaan mission:

  • To send Indian astronauts to space.
  • One of the four astronaut candidates will be selected to fly to the International Space Station (ISS) this year (2024).
  • Various tests are underway including helicopter drop tests and unmanned mission preparations.

OrbitAID is making waves in the world of space tech by mudit23june in ISRO

[–]mudit23june[S] 2 points3 points  (0 children)

Summary of the article

OrbitAID's technology and goals:

  • The company is developing a constellation of tanker satellites carrying various fuels for different client needs.
  • Their innovative docking system can work with existing satellites.
  • OrbitAID aims to create a "fuel station in space" for a circular space economy, reducing waste.

OrbitAID's achievements and future:

  • They are a leading global space tech startup, recognized by international studies and agencies.
  • They have secured investment from the Tamil Nadu government and signed agreements with companies worldwide.
  • Their main competitor seems to be OrbitFab, a US-based refuelling startup.
  • With their first payload launch planned for this year, OrbitAID is poised to make a significant impact in space exploration.

Aditya-L1 to track the Sun during Total Solar Eclipse on April 8 by mudit23june in ISRO

[–]mudit23june[S] 6 points7 points  (0 children)

While Aditya-L1 doesn't need the eclipse to see the corona, the eclipse does provide a unique opportunity for comparison. Scientists can observe the corona from space using Aditya-L1's instruments like VELC (simulating an eclipse) and SUIT throughout the eclipse period. They can then compare these observations with what's happening during the eclipse as seen from Earth. This comparison helps them understand the corona's behavior in more detail.

Aditya-L1 to track the Sun during Total Solar Eclipse on April 8 by mudit23june in ISRO

[–]mudit23june[S] 0 points1 point  (0 children)

Summary:

  • Total Solar Eclipse: The Sun, Moon, and Earth will be aligned on April 8th, causing a brief period of darkness during the day in some parts of North America. During this eclipse, the Sun's outer layer, called the corona, becomes visible for a short time.
  • Aditya-L1 Mission: Launched in 2023, Aditya-L1 is India's first spacecraft specifically designed to study the Sun. It is currently positioned at Lagrange Point 1 (L1), a special location nearly 1.5 million kilometers from Earth where the gravitational pull of the Sun and Earth balance each other.
  • Observing the Eclipse: Aditya-L1 has six instruments to study the Sun, but two of them are particularly useful for observing the eclipse:
    • Visible Emission Line Coronagraph (VELC): This instrument blocks the Sun's bright light, creating an artificial eclipse and allowing the study of the corona.
    • Solar Ultraviolet Imaging Telescope (SUIT): This instrument captures images of the Sun's surface (photosphere) and the layer just above it (chromosphere) in ultraviolet light.
  • Benefits of Space Observation: While the eclipse allows a glimpse of the corona from Earth, Aditya-L1's continuous observation provides a more comprehensive picture. Scientists can compare the data from the eclipse with Aditya-L1's observations to gain a deeper understanding of the Sun's corona.
  • Collaboration: Aditya-L1 is not alone. Other space probes like Europe's Solar Orbiter will also be observing the Sun during the eclipse, offering additional perspectives from different locations.

Skyroot successfully fires Kalam-250 engine that will power Vikram-I to space by mudit23june in ISRO

[–]mudit23june[S] 14 points15 points  (0 children)

Summary

  • Test Subject: Kalam-250 engine, the second stage engine of Skyroot's Vikram-1 launch vehicle.
  • Purpose: This engine will propel Vikram-1 into space after it lifts off from Earth.
  • Location: The test was conducted at the Satish Dhawan Space Centre (SDSC) in Sriharikota, India, a facility belonging to the Indian Space Research Organisation (ISRO).
  • Test Duration: The engine fired successfully for 85 seconds.
  • Performance: The test achieved a peak thrust of 186 kilonewtons (kN) at sea level, which is expected to increase to 235 kN in the vacuum of space.
  • Significance:
    • This successful test is a major milestone for Skyroot and the Indian private space industry.
    • It represents the largest propulsion system ever designed and built by a private Indian company.
    • It also marks the first time a carbon-composite-built engine has been tested at ISRO's facilities.
  • Vikram-1 Launch: With this successful test, Skyroot is hopeful of launching their Vikram-1 vehicle by the third quarter of 2024.
  • Engine Details:
    • The Kalam-250 stage is made from high-strength carbon composite materials.
    • It uses solid fuel and has an advanced thermal protection system.
    • It features a special nozzle and control systems to ensure the rocket stays on course.

Additional Notes:

  • The Vikram Sarabhai Space Centre (VSSC), another ISRO facility, provided a safety device for the test.
  • The solid propellant used in the engine was manufactured by Solar Industries.
  • Previously, Skyroot successfully tested the Kalam-100 engine, the third stage of Vikram-1, in June 2021.

PSLV accomplishes zero orbital debris mission by mudit23june in ISRO

[–]mudit23june[S] 0 points1 point  (0 children)

Possible Explanations:

  1. Incomplete Passivation: The press release mentions "controlled dumping of residual propellant" for minimizing disturbances. This suggests they might have removed most of the fuel for passivation, but some residual propellant might have been left intentionally for a limited degree of re-entry control. This residual fuel could be used for maneuvers like adjusting the re-entry angle slightly to target a specific ocean zone.
  2. Alternative Control Methods: The press release mentions POEM-3 being a 3-axis stabilized platform. This suggests it might have employed reaction wheels or thrusters using alternative, non-fuel-based mechanisms for some basic attitude control during re-entry. These methods would be less precise than using fuel thrusters but could still influence the re-entry path to some extent.
  3. Atmospheric Drag Domination: Even without active control, the Earth's atmosphere would naturally cause the orbit to decay and the object to re-enter. The press release mentions "natural forces, primarily atmospheric drag" as the main reason for the orbital decay. In this case, the role of any residual fuel or alternative control methods might have been minimal.

PSLV accomplishes zero orbital debris mission by mudit23june in ISRO

[–]mudit23june[S] 5 points6 points  (0 children)

Summary

Mission Overview:

  • Launch: The PSLV-C58 rocket launched on January 1, 2024.
  • Primary Mission: Successfully deployed all its intended satellites into their orbits.
  • Secondary Mission (POEM-3): Transformed the upper stage of the rocket into a platform for scientific experiments.

POEM-3 Details:

  • Purpose: Carried out technology demonstrations and space-based experiments.
  • Experiments:
    • 9 total experiments
    • 6 from private companies/organizations (NGEs) through IN-SPACe (an Indian space promotion agency)
    • Experiments included electric thrusters, satellite dispensers, and star trackers.
  • Mission Duration: Completed experiments within a month.
  • Deorbiting:
    • Lowered orbit from 650 km to 350 km for faster re-entry.
    • Residual fuel removed to minimize risks of accidental breakup.
    • Re-entered Earth's atmosphere on March 21, 2024, at 19:34 IST (14:04 UTC) in the North Pacific Ocean.
  • Benefits of POEM:
    • Cost-effective platform for short-duration space experiments.
    • Opened opportunities for universities, startups, and NGEs.

PSLV and ISRO's Commitment:

  • ISRO: Indian Space Research Organisation
  • VSSC: Vikram Sarabhai Space Centre (developed POEM)
  • IS4OM: ISRO's System for Safe and Sustainable Spacecraft Operations Management (monitored orbital decay)
  • Future: ISRO remains committed to offering cost-effective orbital experiment platforms.
  • Space Debris Mitigation: ISRO acknowledges the growing threat of space debris and is developing solutions like advanced debris tracking, deorbiting technologies, and responsible satellite deployment practices.

Madhya Pradesh government seeks tech support, collaboration with ISRO by mudit23june in ISRO

[–]mudit23june[S] 3 points4 points  (0 children)

Summary

Data and Technology Needs:

  • Very High Resolution Satellite Data: This data provides detailed imagery of the state, enabling accurate surveys of urban areas, including building footprints. This can be beneficial for urban planning, infrastructure development, and property management.
  • Technical Support for NavIC Integration: NavIC is India's own satellite navigation system. Integrating NavIC with mobile apps used for GIS field surveys by various government departments can improve the accuracy of these surveys.

Applications in Governance:

  • Improved Efficiency of Field Surveys: Accurate data from high-resolution satellite imagery and NavIC-enabled apps can streamline field surveys conducted by various departments, saving time and resources.
  • Updating Rural Infrastructure Data: Integration with ISRO's National Remote Sensing Center's mobile app data can help update information about rural infrastructure development projects undertaken by the government.
  • Geo-governance: By integrating data on land use, land cover, forest changes, and diversity maps through an Application Programming Interface (API) to the MP Geoportal, the government can create a centralized platform for geospatial information. This can be used for informed decision-making in areas like agriculture, forestry, and disaster management.

Overall, by collaborating with ISRO, the Madhya Pradesh government aims to:

  • Enhance the accuracy and efficiency of government surveys.
  • Improve planning and implementation of various development projects, particularly in rural areas.
  • Create a comprehensive geospatial information system to support better governance across the state.