BEL, Bellatrix ink pact to develop very low Earth orbit satellite systems
Bharat Electronics Limited (BEL), India's defence electronics major, signed a Memorandum of Understanding (MoU) with Bengaluru-based space technology startup Bellatrix Aerospace to jointly develop and manufacture satellite systems for the Very Low Earth Orbit (VLEO) regime
The partnership combines BEL's strengths in defence electronics, systems integration, and manufacturing scale with Bellatrix's proprietary green propulsion technology and satellite bus expertise
VLEO (Very Low Earth Orbit) refers to orbital altitudes between 100–450 km — lower than conventional LEO satellites (typically 450–2,000 km), offering advantages in imaging resolution and communication latency
Bellatrix's flagship "Project 200" aims to launch its first satellite at below 200 km altitude by 2026 — a world-first at that altitude category for a commercial platform
Very Low Earth Orbit (VLEO) — Orbital Mechanics and Applications
Orbit altitude directly determines a satellite's capabilities and operational challenges. VLEO represents the newest frontier in satellite deployment, offering advantages in Earth observation and communications at the cost of higher atmospheric drag and shorter natural lifetimes.
Key Details
- VLEO altitude: 100–450 km (some definitions use 180–450 km; below conventional LEO)
- Conventional LEO: 450–2,000 km (e.g., International Space Station at ~400 km; many imaging satellites at 500–600 km)
- VLEO advantages:
- Higher image resolution (proximity to Earth reduces diffraction limits)
- Lower latency for communications (shorter signal path)
- Smaller, lighter satellites can achieve the same resolution as larger LEO satellites
- Natural deorbit in weeks-to-months (lower debris risk — important for space sustainability)
- VLEO challenges:
- Significant atmospheric drag (residual atmosphere at 200 km requires continuous propulsion)
- Requires advanced propulsion systems for orbit maintenance (station-keeping)
- Thermal stress and atomic oxygen erosion of satellite materials
- Bellatrix Project 200: Ultra-low orbit satellite at <200 km; ~2m length; 50-70 kg payload; >1 kW solar power; first launch targeted 2026
The technical challenge of VLEO — specifically, continuous propulsion to fight atmospheric drag — is precisely where Bellatrix's green propulsion technology (water-based plasma thrusters and HPGP systems) provides a competitive advantage.
Bellatrix Aerospace — India's Green Propulsion Pioneer
Bellatrix Aerospace is a Bengaluru-based private space startup that has become a leader in green in-space propulsion technology, replacing toxic hydrazine-based propulsion systems with environmentally benign alternatives.
Key Details
- Founded: 2015; incubated at the Indian Institute of Science (IISc), Bengaluru
- Co-founders: Rohan Ganapathy and Yashas Karanam
- Key technology: High Performance Green Propulsion (HPGP) system — tradename "RUDRA"; replaces toxic hydrazine with non-toxic alternative propellants
- Also developed: Water-based plasma thrusters (ionic propulsion using electrolysis of water)
- Space test milestones: RUDRA 0.3 tested on ISRO's POEM-3 (January 2024) and POEM-4 (January 2025) — PSLV Orbital Experimental Module
- Funding: Raised USD 8 million in Series A (2022); associated with ISRO IN-SPACe ecosystem and NSIL (NewSpace India Limited)
- Stingray constellation: Bellatrix's planned VLEO Earth observation constellation using its propulsion-enabled platforms
The BEL-Bellatrix MoU pairs Bellatrix's propulsion and satellite platform expertise with BEL's manufacturing depth and government relationships — a classic public-private partnership model for scaling deep-tech in India's defence and space ecosystem.
Bharat Electronics Limited (BEL) — Role in India's Defence and Space Ecosystem
BEL is a Navratna Central Public Sector Enterprise (CPSE) under the Ministry of Defence, specializing in defence electronics, radar systems, communication equipment, and space electronics.
Key Details
- Established: 1954; headquartered in Bengaluru
- Navratna status: Confers significant financial and operational autonomy to BEL's board
- Key products: Radar systems, electronic warfare systems, communication equipment, optoelectronics, solar panels for ISRO spacecraft, missile system electronics
- Space electronics: BEL supplies electronics and subsystems to ISRO programmes including Chandrayaan, Mangalyaan, and PSLV/GSLV rockets
- Revenue (FY2024): ~₹20,000 crore; strong order book from defence modernisation
- India's space privatisation context: The IN-SPACe (Indian National Space Promotion and Authorization Centre) established in 2020 opened ISRO's facilities to private players — BEL and startups like Bellatrix can now collaborate commercially on space hardware
BEL's VLEO partnership with Bellatrix reflects the maturation of India's space privatisation policy — where defence CPSEs serve as manufacturing anchor partners for space startups, combining public sector scale with private sector innovation.
India's Space Policy Framework — IN-SPACe and the New Commercial Space Era
India's 2020 space reforms fundamentally restructured the sector to allow private participation, moving from ISRO's monopoly model to a more open ecosystem with designated roles for public and private entities.
Key Details
- IN-SPACe (Indian National Space Promotion and Authorization Centre): Established 2020 under the Department of Space; single-window authorization body for private space activities; facilitates access to ISRO facilities and technology for private entities
- NSIL (NewSpace India Limited): Commercial arm of ISRO for technology transfer and commercial launch services
- Indian Space Policy 2023: Formally defines roles — ISRO for R&D and national missions; IN-SPACe for promotion and regulation; NSIL for commercialization
- FDI in space: 100% FDI allowed in satellite manufacturing and operations under Indian Space Policy 2023
- Space sector PLI: Government announced production-linked incentive scheme for space components
- India's commercial satellite launch market: ISRO's PSLV and GSLV Mk3 have launched over 400 foreign satellites — a growing revenue source
The BEL-Bellatrix MoU is a product of the Indian Space Policy 2023 environment — private startups can now formally partner with defence CPSEs for satellite development, signalling India's ambition to capture a share of the rapidly growing global VLEO satellite market.
- BEL: Navratna CPSE under Ministry of Defence; founded 1954; Bengaluru; FY2024 revenue ~₹20,000 crore
- Bellatrix Aerospace: Founded 2015, IISc-incubated; Bengaluru; co-founders Rohan Ganapathy and Yashas Karanam
- VLEO altitude: 100–450 km (below conventional LEO of 450–2,000 km)
- Bellatrix Project 200: VLEO satellite at <200 km; ~2m length; 50-70 kg payload; >1 kW power; first launch target 2026
- Bellatrix propulsion: RUDRA HPGP system — tested on ISRO POEM-3 (Jan 2024) and POEM-4 (Jan 2025)
- IN-SPACe: Established 2020; single-window authorization for private space activities
- Indian Space Policy 2023: 100% FDI in satellite manufacturing; defines ISRO/IN-SPACe/NSIL roles
- Series A funding (Bellatrix): USD 8 million (2022)
- ISS orbit altitude (reference): ~400 km — VLEO would be below this
- VLEO advantage: Natural orbital decay in weeks-months (reduces space debris)
- VLEO challenge: Continuous propulsion needed to fight atmospheric drag — Bellatrix's core expertise