Vikram-1 Small-Satellite Launch Vehicle (SSLV)

Why in News?

India launched its first private orbital rocket Vikram 1 on July 18.

What about Vikram-1 SSLV?

• Vikram-1 rocket – It is India’s first privately developed multi‑stage orbital launch vehicle to a low-Earth orbit.
• Developed by – Skyroot Aerospace, a Hyderabad-based private space company.
  • So far, all orbital rockets India had launched as part of its space programme had been state-funded and led by ISRO.
• Mission Aagaman – It is dubbed ‘Mission Aagaman’ (meaning arrival), marking India’s entry into an elite group of nations with private orbital launch capability, making it only the 3rd country in the world, after the United States & China.

Features

• 4-stage rocket – It is a four-stage orbital launch vehicle - first three stages use solid fuel, and the fourth uses liquid fuel.
• Structure – It is a seven-storey-tall rocket built with an all-carbon composite structure and is engineered for rapid manufacturing and high launch pace.
• Propulsion – Powered by in-house developed propulsion systems, including 3D-printed engines and high-thrust solid-fuel rocket boosters.
• Payload Capacity – It can carry up to 350 kg to Low Earth Orbit (LEO), 290 kg to a 500-km sun-synchronous orbit and 480 kg to a low-inclination orbit at similar altitude
• 6 Payloads Deployed
  • Embrace by Cosmoserve Space - Robotic-arm demo for space debris capture.
  • SOLARAS Satellite by Grahaa Space - Satellite mission.
  • SCOPE Satellite by Skyroot Aerospace - Experimental satellite.
  • uD3PP and mD3RN by Germany’s Dcubed - Deployable technology demonstrators.
  • Cosmic Bloom by Cosmos Diamonds
  • Micro Art Tribute by Ajay Kumar Mattewada.
• Symbolic Jewels – Lab-grown diamond lotus & an 18-karat gold micro-rocket bearing rice-grain sculptures of Sarabhai, Raman and Kalam — the three names Skyroot gives its rockets and engines.
• Flight Performance – Vikram-1’s maiden flight met every milestone, including the process called ‘long coast’ a tricky phase holding attitude without thrust) and the final burn of the printed engine.
• For a debut mission aimed only at clearing the tower and gathering data, reaching orbit was an overachievement.
• Other rockets like Electron, Firefly Alpha, and ISRO’s SSLV stumbled on their first attempts.

Vikram-1, India’s first - privately developed orbital rocket, all-carbon composite design, fully 3D-printed engine, longest monolithic stage, and ultra-low-shock separation systems.

What is Skyroot’s 3D-printed engine and why it matters?

• 3D Printing –  Rocket engines have traditionally been forged, machined and welded from dozens of parts.
• In 3D printing (additive manufacturing), a laser fuses metal powder layer by layer to form a single-piece component.
• Advantages
  • It eliminates the bolts, seals, and joints that often cause leaks and failures in conventional designs.
  • Skyroot test-fired its Raman engine in 2020; the fully 3D-printed injector reduced the mass by 50%.
  • Cut components and production time by 80% compared to conventional manufacturing methods.
  • Enables complex internal cooling channels (e.g., regenerative cooling in Vikram-1) that cannot be made using conventional drilling.
  • Prototypes produced in days, not months, so a startup can test, fail and redesign at a pace that would have been anathema to ISRO’s supplier chains.

What is the significance of Vikram’s “all-carbon-composite” body?

• Carbon-Fibre Composite – It is a filament of near-pure carbon set in resin.
• It offers specific strength (strength per unit weight) many times that of aerospace aluminium or maraging steel.
• Every kilogram saved in structure means more payload capacity.
• The material resists fatigue and corrosion and can be laid up by automated machines into seamless tubes — Vikram-1’s Stage-1 is India’s longest single-piece composite rocket stage.
• Disadvantages
  • High cost of material and curing infrastructure.
  • Strength runs along the fibres - a poorly designed laminate is strong one way and brittle another; and
  • Invisible damage risk - a delamination from a knock in transport can lurk invisibly beneath a perfect surface.
  • Requires ultrasonic inspection where dents in aluminium are visible.

Is this comparable to ISRO’s PSLV & SSLV?

Who else is building private rockets in India?

• Healthy Rivalry – Skyroot Aerospace & Chennai’s AgniKul Cosmos, incubated at IIT Madras, runs a parallel course.
• India’s Private Space Ecosystem – Since the 2020 reforms and IN-SPACe’s creation in 2022, India’s space startups have multiplied from a handful to more than 400.
• Dependency Shift – Until July 18, 2026, all relied on ISRO rockets.
• A private launcher turns ISRO from gatekeeper into landlord & turns access to orbit from a national programme into a market.
• Market Opportunity – The small-satellite launch business is supply-starved worldwide, whereas Skyroot pitches itself as a cab service to space.

What are the business challenges ahead?

• Domestic Demand – India’s small satellite launch demand is limited; even ISRO does not launch 12 small satellites a year today.
• India’s own commercial space ecosystem is only just beginning to expand and includes potential future collaborators like Pixxel, Bellatrix Aerospace, and Dhruva Space.
• Even so, the domestic market remains relatively limited.
• Market Dynamics – Past forecasts (2015–2021) predicted a strong demand boom for 100–500 kg satellites.
• Projection – By 2035, small satellites may form one-third of launches, but less than 10% of total launch mass.
• The reality is that demand has grown, but profits become uneven; revenues from launch vehicles lag behind satellite manufacturing.
• Cost Pressures – Many small-satellite makers are flying their payloads as rideshares on larger rockets, especially SpaceX Falcon 9, which are cheaper, reducing the appeal of dedicated small-satellite launchers.
• Dedicated launches offer flexibility and custom orbits, but at a premium cost.
• Struggle to Secure Contract – Startups across Europe, the U.S., China, Japan, and Australia are also developing small-satellite launchers & many have folded away after struggling to secure launch contracts from what is already a small pool of customers.
• Vikram-1 will also compete with ISRO’s own new Small Satellite Launch Vehicle.
• Margins – Launch services are low-margin and capital intensive, especially when compared to satellite manufacturing, downstream applications, data services, and communications.
• Compliance Cost – Costs for debris mitigation and other regulatory obligations add further hurdles.
• Global Competition – Competing against established players like SpaceX, Rocket Lab, and emerging startups in Europe, China, and the U.S.

References

1. The Hindu | What makes Skyroot’s Vikram-1 launch unique?
2. The Hindu | Skyroot faces a steep climb to business success