Best Place To BuildSrinath Ravichandran, Co-Founder & CEO, AgniKul Cosmos| "Is Rocket Science Really That Hard?"| Ep.20
CHAPTERS
- 0:36 – 1:20
Podcast setup at IIT Madras Innovation Hub + meeting AgniKul’s CEO
The host introduces the “Best Place To Build” podcast from IIT Madras’ innovation ecosystem and sets up the conversation with Srinath Ravichandran, Co-Founder & CEO of AgniKul Cosmos. The episode frames AgniKul as an early private rocketry company in India and tees up the central question: is rocket science really that hard?
- •On-location context: IIT Madras and the Sudha & Shankar Innovation Hub
- •Goal of the show: talk to “builders” and what makes IITM a place to build
- •Introducing Srinath and AgniKul Cosmos
- •Opening premise: interrogating the phrase “this is not rocket science”
- 1:20 – 2:53
Why rocket science is hard today: perfection, reliability, and the last 1%
Srinath reframes rocketry as less about inaccessible engineering and more about unforgiving system-level reliability. Modern compute and communication make many parts easier than decades ago, but success still demands every element working perfectly—every time.
- •The “hard part” is not basic engineering—it’s ensuring every detail is right
- •Rocket systems fail like a strict exam: miss one answer and you fail
- •Compute and tooling improved; reliability and repeatability remain the challenge
- •Real-world reminder: launches can be scrubbed even without explosions
- 2:53 – 6:09
AgniKul’s mission + how satellites changed (GEO vs LEO, size, and scale)
AgniKul builds launch vehicles for small satellites, a market reshaped over the last two decades. Srinath explains the shift from a few large GEO satellites to massive LEO constellations: closer orbits, smaller spacecraft, and orders-of-magnitude more satellites.
- •AgniKul targets smallsat launches (hundreds of kilograms class)
- •GEO (~36,000 km) vs LEO (~360–500 km): what “far” and “near” mean
- •Satellite mass shrink: ~5 tons → ~50–500 kg
- •Constellation growth: a handful of satellites → thousands
- •LEO tradeoff: low latency but fast orbital motion and short pass times
- 6:09 – 8:56
Rockets as transportation: rideshare economics, orbit basics, and collision avoidance
The conversation moves from satellite demand to the transportation problem: rockets are cargo vehicles whose economics often favor large rideshare missions. Srinath explains what it means to reach orbit (speed + horizontal motion) and how multiple satellites are safely deployed without colliding.
- •Rockets are fundamentally transportation systems for payloads
- •Rideshare logic: big rockets need many payloads to be economical
- •Orbit concept: ~7 km/s horizontal velocity so you “fall around” Earth
- •LEO timelines: reaching orbit in ~8–10 minutes; ~90 minutes per orbit
- •Collision risk is real; mitigated via separation maneuvers and station-keeping
- 8:56 – 21:25
Private space takes off: how SpaceX changed pricing, speed, and narrative
Srinath describes how SpaceX catalyzed a shift from opaque, government-dominated launch markets to a more startup-like ecosystem. Key changes included making launch feel commoditized through simple metrics (like dollars per kg) and accelerating development cycles.
- •Before SpaceX: low transparency, high cost, and risk aversion dominated
- •Commoditization via “$/kg” made launch services feel legible as a business
- •Shorter timelines: shifting mindset from 10-year programs to faster iteration
- •New entrants and applications emerged once access and pricing became clearer
- •Example use-case expansion: satellite imagery used in financial markets
- 21:25 – 25:11
India’s policy inflection: from ISRO-vendor model to private missions (IN-SPACe)
The episode explains India’s transition from private firms serving mainly as ISRO vendors to enabling independent commercial space missions. Srinath recounts the surprise 2020 announcement and how IN-SPACe opened doors for private launchpads, launches, and satellite missions.
- •Earlier model: private companies could build, but ISRO was the primary customer
- •Post-COVID shift: policy focus on increasing India’s commercial space share
- •Creation of IN-SPACe to authorize and enable private space activities
- •Atmanirbhar announcement moment in May 2020 as a major catalyst
- •Impact: legitimized the possibility of building a “SpaceX-like” company in India
- 25:11 – 28:03
What made ISRO successful: passion, frugality-driven innovation, and governance
Srinath outlines why ISRO stands out among Indian public institutions. He attributes success to a mission-driven talent pool, constant cash constraints that forced innovation, and streamlined decision-making due to governance structures close to the Prime Minister’s office.
- •Space attracts passion-driven talent more than many other sectors
- •Shoestring budgets forced creative engineering and cost discipline
- •Bullock-cart story as a symbol (and possibly a vibration-test insight)
- •Governance: fewer bureaucratic layers via PM-level portfolio oversight
- •National pride plays a role, though different from defense
- 28:03 – 31:51
Designing small rockets: the economic problem and AgniKul’s “firsts”
Srinath explains that the core challenge in small launch vehicles is economic viability, not physics. AgniKul’s innovations are presented as deliberate choices to make small-scale rocketry work on cost—leading to multiple “firsts,” including its engine and systems philosophy.
- •Small rockets suffer worse unit economics than large vehicles
- •AgniKul’s lens: develop tech that makes cost work at small scale
- •Mission/vehicle naming: AgniMan, AgniMan SOrTeD, Mission 01, AgniLight engine
- •Innovation goal: reduce “dollars per newton” and other cost-per-performance metrics
- •Cost reduction is technology-driven, not just “India is cheaper”
- 31:51 – 38:28
Inside AgniLight: single-piece 3D-printed rocket engine and additive manufacturing realities
This chapter dives deep into why AgniKul pursued a one-piece, 3D-printed engine and what it enables geometrically and economically. Srinath explains additive vs subtractive manufacturing, the iteration effort, powder-removal constraints, and the extra challenges of metal printing and post-processing.
- •One-piece printing removes welds/joints and reduces human assembly steps
- •Additive enables internal fuel channels and complex embedded geometries
- •High iteration count (dozens of design cycles) to make one-piece printing feasible
- •Metal AM challenges: powder entrapment, removal pathways, and heat treatment
- •Process details: direct metal laser sintering + post-processing for strength uniformity
- 38:28 – 43:02
Software-defined rockets: AgniKul OS, modular “apps,” and Ethernet avionics
AgniKul’s rocket architecture is described as computer-first: a flight computer running an OS with modular applications, where hardware subsystems behave like peripherals. Srinath also explains the choice to connect vehicle systems using Ethernet for lightweight, high-throughput communication—especially important for small rockets.
- •Reversal of mindset: a computer going to orbit; engine and systems as peripherals
- •Linux-based real-time OS approach (AgniKul OS)
- •Functions decomposed into modular “apps” (engine control, navigation, telemetry, etc.)
- •Advantages: versioning, upgrades, and reduced integration brittleness
- •Ethernet-based internal networking reduces wiring mass while enabling high data rates
- 43:02 – 49:15
Mobile launchpad + launch economics: latitude, ‘anytime’ constraints, and customer fit
Srinath describes AgniKul’s mobile launchpad—built and qualified at IIT Madras, then transported and assembled at Sriharikota—enabling flexible deployment. The discussion expands to customer-centric launch design: pricing depends on orbit requirements and launch latitude, and “anytime” availability is a major unmet market need.
- •First Indian launch from a mobile launchpad concept (per discussion)
- •Launchpad lifecycle: built/qualified at IITM → moved to Sriharikota → reassembled
- •Customer input-output model: payload mass + orbit → launch location/cost tradeoffs
- •Latitude matters: Earth’s rotation can materially change performance/cost
- •Industry gap: ‘anytime’ access is scarce even with leading providers
- 49:15 – 54:45
Team building for hard tech: young builders + ISRO veterans + mentorship flywheel
Srinath explains how AgniKul combines a young team with experienced retired ISRO talent to avoid repeat mistakes while still thinking fresh. He shares the founding story with co-founder Moin, the cold-email search for test facilities, and how Professor Sathya Chakravarthy became a pivotal mentor and connector.
- •Team profile: average age mid-to-late 20s, blended with retired ISRO experts
- •Rationale: avoid legacy baggage while still de-risking execution mistakes
- •Founding story: Srinath and Moin (friends via cricket) converge to start AgniKul
- •Cold outreach: many emails/calls before finding the right lab and support
- •Key mentor network: Professor Sathya and senior advisors like Perumal (GSLV legacy)
- 54:45 – 57:25
The psychology of countdowns: launch stress, aborts, and operational learning loops
The episode explores why countdowns are inherently anxiety-inducing and operationally necessary for synchronizing teams. Srinath details how repeated launch aborts trigger intense scrutiny, but also create a pattern of execution—problem, fix, justify, and retry—that becomes more manageable with experience.
- •Countdowns exist to synchronize many teams to a single timeline
- •They also amplify stress by design (a cultural artifact of launch operations)
- •Abort cycles create heavy internal/external inquiry and accountability
- •Repetition builds resilience and familiarity with the process
- •Perseverance theme: continuing despite repeated setbacks
- 57:25 – 1:13:59
Srinath’s unconventional path: Wall Street, film school, flying, storytelling, luck—and family balance
Srinath reflects on his journey from electrical engineering to finance in New York, then back toward aerospace—picking up skills that later helped him build AgniKul. He connects film-school storytelling, pilot-style decision-making, and finance-driven mental models, then closes with lessons on luck (“put up the sails”), continued ties to IIT Madras, and the realities of being a CEO and a parent.
- •Career evolution: electrical engineering → ABB → financial engineering → Wall Street → return to aerospace
- •Film school as training for communication, narrative structure, and audience engagement
- •Pilot training: decisive checklists and clarity under uncertainty
- •Finance mindset: rules-of-thumb, fast approximation, and quantitative storytelling via metrics
- •Luck principle: prepare (raise the sails) so you can benefit when conditions change
- •IITM connection: ongoing presence (e.g., engine work in Research Park) and balancing family support systems
