1️⃣ What is the Mission?

• The Indian Space Research Organisation (ISRO) is scheduled to launch the LVM-3 rocket carrying its heaviest-ever satellite payload.
• The satellite being launched is BlueBird Block-2, weighing nearly 6,100 kg.
• This is ISRO’s heaviest payload placed into orbit so far.

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2️⃣ Launch Vehicle: LVM-3 Rocket

Role of LVM-3

• The LVM-3 rocket is ISRO’s heavy-lift launch vehicle.
• It is also the launch vehicle identified for:
  • India’s first crewed space mission (Gaganyaan).

Orbit Injection

• The satellite will be injected into orbit at an altitude of around 520 km.
• The entire process of placing the satellite into orbit will take about 15 minutes after lift-off.

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3️⃣ The Satellite: BlueBird Block-2

Design and Ownership

• BlueBird Block-2 has been designed by the US-based company AST SpaceMobile.

Nature of Orbit

• The satellite will operate in Low Earth Orbit (LEO).
• LEO is described as an orbit that is relatively close to the Earth’s surface, generally at altitudes below 1,000 km.

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4️⃣ Purpose of the Mission

Communication Objective

• BlueBird Block-2 will be part of a LEO satellite constellation.
• The constellation is intended to provide:
  • Direct mobile connectivity
  • Communication without routing signals through ground stations first.

Services Enabled

• The constellation will enable:
  • 4G and 5G voice and video calls
  • Text messaging
  • Data and streaming services
• These services aim to work “for everyone, everywhere, at all times”, as stated by ISRO.

5️⃣ Why This Launch is Significant

Payload Record

• At 6,100 kg, BlueBird Block-2 is the heaviest payload ISRO has ever placed in orbit.
• Until now, ISRO’s heaviest payloads had been:
  • The OneWeb satellite batches, cumulatively weighing over 5,700 kg and placed into LEO.

6️⃣ Frequency of Heavy Launches

• This mission comes just weeks after the LVM-3 rocket placed the CMS-03 communication satellite into orbit.
• It represents the shortest gap between two LVM-3 launches.