ISRO’s LVM3 Successfully Launches 36 OneWeb Satellites: Key UPSC Facts

23 Jul ISRO’s LVM3 Successfully Launches 36 OneWeb Satellites: Key UPSC Facts

Subject Relevance — Where This Topic Fits

• GS Paper III — Science and Technology — Developments and their Applications and Effects in Everyday Life; Space Technology
• Prelims: LVM3, OneWeb satellites, NSIL, SDSC-SHAR, Gaganyaan mission, Low Earth Orbit (LEO), orbital inclination, C25 cryogenic stage, S200 solid rocket boosters
• Essay: The Role of Public-Private Partnerships in India’s Space Sector: A Catalyst for Technological Sovereignty and Economic Growth, Global Space Race: India’s Emergence as a Reliable Launch Provider in the Commercial Satellite Market

Quick Revision: The LVM3 M3/OneWeb India-2 mission demonstrated ISRO’s operational readiness for complex commercial launches, validated upgraded S200 boosters for Gaganyaan, and solidified India’s role as a reliable global launch service provider.

Why is this in the news?

The successful deployment of 36 OneWeb satellites by ISRO’s LVM3 M3/OneWeb India-2 mission on March 26, 2023, marks a significant milestone in India’s commercial space sector. This mission, executed by NewSpace India Limited (NSIL), completed the contractual obligation of launching 72 OneWeb satellites to Low Earth Orbit (LEO), reinforcing India’s position as a competitive and reliable launch service provider. The mission also demonstrated the operational readiness of the LVM3 vehicle for complex commercial and human spaceflight missions, including the upcoming Gaganyaan mission, thereby enhancing India’s strategic autonomy in space.

Background

• The LVM3 (Launch Vehicle Mark-III), formerly known as the GSLV Mk-III, is India’s heaviest operational launch vehicle, designed to carry payloads up to 4,000 kg to Geosynchronous Transfer Orbit (GTO) and up to 8,000 kg to Low Earth Orbit (LEO).
• OneWeb is a global satellite internet company aiming to deploy a constellation of 648 satellites in LEO to provide global broadband connectivity. As of this mission, OneWeb’s constellation stood at 618 satellites.
• NewSpace India Limited (NSIL), the commercial arm of ISRO, was tasked with executing the contract to launch 72 OneWeb satellites in two phases (36 satellites per mission) using the LVM3 vehicle.
• The first phase of the OneWeb India mission (LVM3 M2/OneWeb India-1) was successfully completed on October 23, 2022, deploying 36 satellites into a 450 km circular orbit with an inclination of 87.4 degrees.
• The LVM3 vehicle has demonstrated six consecutive successful flights, establishing its reliability in both commercial and strategic missions.
• The mission also validated the performance of upgraded S200 solid rocket boosters (S200 motors), which are critical for the upcoming Gaganyaan human spaceflight mission.

What is the LVM3 M3/OneWeb India-2 Mission?

• The LVM3 M3/OneWeb India-2 mission was a commercial satellite launch executed by ISRO’s Launch Vehicle Mark-III (LVM3) on March 26, 2023, from the Satish Dhawan Space Centre (SDSC-SHAR), Sriharikota.
• The primary objective was to deploy 36 OneWeb satellites into a 450 km circular orbit with an orbital inclination of 87.4 degrees, completing NSIL’s contractual obligation of launching 72 OneWeb satellites.
• The mission carried a total payload of 5,805 kg, the heaviest yet for an LVM3 commercial launch, and demonstrated the vehicle’s capability to handle complex orbital maneuvers.
• The LVM3 vehicle consists of three stages: two solid rocket boosters (S200), a liquid core stage (L110), and a cryogenic upper stage (C25). The C25 stage performed a series of sophisticated maneuvers to inject the satellites in batches of four, spaced at defined intervals to avoid collisions.
• The mission validated the performance of upgraded S200 solid rocket boosters, which are designed with enhanced margins suitable for the Gaganyaan mission, ensuring operational readiness for human spaceflight.
• OneWeb confirmed the acquisition of signals from all 36 satellites post-deployment, marking the successful completion of the mission and the expansion of OneWeb’s global satellite constellation.
• This mission underscored the growing partnership between ISRO, NSIL, and OneWeb, highlighting India’s emergence as a key player in the global commercial space launch market.
• The successful execution of this mission reaffirms India’s strategic autonomy in space, reducing dependence on foreign launch providers for commercial satellite deployments.

Key Features

Why it Matters

Economic

• Strengthens India’s position in the global space economy by securing high-value commercial launch contracts.
• Enhances revenue streams for ISRO and NSIL through competitively priced heavy-lift launch services.
• OneWeb’s constellation expansion supports global broadband connectivity, aligning with India’s Digital India and BharatNet objectives.

Strategic

• Demonstrates India’s autonomous access to space, reducing dependence on foreign launch providers for critical satellite deployments.
• Validates LVM3’s reliability for future missions, including human spaceflight (Gaganyaan) and deep-space exploration.
• Reinforces strategic partnerships with international entities (e.g., OneWeb), fostering technology transfer and collaboration.

Technological

• Showcases ISRO’s precision in multi-satellite deployment, a critical capability for constellation-based missions.
• Upgraded S200 motors reflect indigenous innovation, ensuring compatibility with future missions requiring higher payload margins.
• Orbital maneuverability advancements reduce collision risks, enhancing safety in congested Low Earth Orbit environments.

Geopolitical

• Positions India as a preferred partner for global satellite operators, competing with established launch providers like SpaceX and Arianespace.
• Supports OneWeb’s goal of global broadband coverage, indirectly aiding India’s efforts in bridging the digital divide.

Challenges

1. Orbital Precision and Collision Avoidance

• Achieving exact orbital parameters (450 km altitude, 87.4° inclination) requires precise trajectory calculations and real-time adjustments.
• Phased separation of 36 satellites demands meticulous timing to prevent inter-satellite collisions, a challenge in congested LEO.
• Orthogonal reorientation of the C25 stage adds complexity, necessitating advanced guidance, navigation, and control systems.

UPSC Link: GS III: Space Technology

2. Payload Capacity and Thermal Management

• Handling a 5,805 kg payload requires thermal protection systems to mitigate heat loads during ascent and orbital insertion.
• Structural integrity of the payload fairing and adapters must withstand aerodynamic and thermal stresses during launch.
• Optimizing fuel consumption for multi-burn maneuvers while maintaining payload safety is a critical engineering challenge.

UPSC Link: GS III: Space Technology

3. Commercial Viability and Cost Efficiency

• Maintaining competitive pricing while ensuring mission reliability is essential to attract global satellite operators.
• Balancing indigenous development with foreign collaborations (e.g., OneWeb) to avoid over-dependence on external technology.
• Ensuring rapid turnaround between missions to meet commercial launch timelines without compromising safety standards.

UPSC Link: GS III: Economic Development

4. Regulatory and Policy Framework

• Streamlining approvals for commercial launches to reduce bureaucratic delays and enhance India’s attractiveness as a launch hub.
• Ensuring compliance with international space treaties (e.g., Outer Space Treaty) while facilitating private sector participation.
• Addressing liability issues in case of launch failures or satellite malfunctions to protect both ISRO and commercial partners.

UPSC Link: GS II: Government Policies

Challenges — UPSC Perspective

Way Forward

• Enhance LVM3’s payload capacity to accommodate larger constellations or heavier satellites, aligning with global demand.
• Develop indigenous satellite platforms to reduce reliance on foreign satellite manufacturers for commercial launches.
• Strengthen NSIL’s role as a commercial arm of ISRO by streamlining procurement and regulatory processes for private players.
• Invest in advanced guidance systems and AI-driven trajectory planning to improve mission success rates.
• Expand international collaborations to secure more commercial launch contracts, diversifying revenue sources.
• Prioritize research in reusable launch vehicle technology to further reduce mission costs and enhance sustainability.
• Establish a dedicated space debris mitigation program to address orbital congestion and long-term sustainability.
• Promote STEM education and skill development in space technology to build a talent pipeline for ISRO and private sector.

UPSC Value Addition

Prelims Practice Questions

Q1. Which of the following statements about the LVM3 M3/OneWeb India-2 mission is correct?

1. The mission deployed 36 OneWeb satellites into a 450 km circular orbit with an inclination of 87.4 degrees.
2. The payload mass for this mission was 5,805 kg, making it the heaviest payload launched by ISRO to date.
3. The C25 cryogenic stage performed a single-point injection of all satellites simultaneously to avoid collision.
4. This was the first commercial launch of LVM3, marking ISRO’s entry into the global satellite deployment market.

Answer: The mission deployed 36 OneWeb satellites into a 450 km circular orbit with an inclination of 87.4 degrees. — The mission successfully deployed 36 OneWeb satellites into a 450 km circular orbit at 87.4 degrees inclination. While the payload mass was 5,805 kg, it was not the heaviest payload launched by ISRO. The C25 stage used a phased injection method, and LVM3 had conducted prior commercial launches.

Q2. Which organisation is responsible for executing the commercial launch contracts of ISRO’s LVM3?

1. Indian National Space Promotion and Authorisation Centre (IN-SPACe)
2. Department of Space (DoS)
3. NewSpace India Limited (NSIL)
4. Defence Research and Development Organisation (DRDO)

Answer: NewSpace India Limited (NSIL) — NewSpace India Limited (NSIL), ISRO’s commercial arm, is tasked with executing commercial launch contracts, including those for the LVM3 vehicle.

Mains Practice Question

✍ Analyse the significance of ISRO’s LVM3 M3/OneWeb India-2 mission in the context of India’s space sector reforms and its strategic implications for global satellite deployment. (250 words)

Approach: Begin by contextualising the mission within ISRO’s commercialisation strategy under the ‘Space Sector Reforms’ of 2020, highlighting NSIL’s role in executing foreign contracts. Discuss the technical achievement of phased multi-satellite injection and orbital maneuverability, linking it to India’s growing competence in LEO satellite deployments. Examine the strategic implications, including India’s emergence as a cost-effective alternative to global launch providers, and the potential for future collaborations in human spaceflight (e.g., Gaganyaan) and deep-space missions. Conclude by addressing challenges such as competition from private players like SpaceX and the need for sustained policy support.

Source: ISRO

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