RTLS: Return to Launch Site
Enabling rapid reuse through precision-engineered vertical landings — our commitment to sustainable access to space.
Rendering: Vajra First Stage Performing RTLS to Coastal Pad
What is RTLS?
Return-To-Launch Site (RTLS) is a booster recovery technique where the first stage of the launch vehicle returns to its original launch pad for a vertical powered landing. This method minimizes time between launches, eliminates complex ship recovery logistics, and significantly reduces cost per launch.
Key Capabilities
- 🎯 Precision Landing: GNSS + terrain-relative navigation for touchdown within 5-meter accuracy
- 🧠 Autonomous Guidance: Onboard decision engine with wind, drift, and engine margin compensation
- 🔥 Retro-propulsion: Multi-burn profile with boostback, reentry, and landing burns
- 🌐 Pad Integration: Shock-absorbing landing pads with thermal-resistant flame shields
- ♻️ Reuse Cycle: Designed for up to 15 flights with minimal refurbishment
Integrated Across Gatkul Vehicles
RTLS is embedded in the design of Vajra, Trishul, and PADMA-class launch vehicles. Each stage integrates gimbal-capable Ragam engines, deployable landing legs, and heat-protected control surfaces to enable controlled return to the pad — even under high-mass or windy conditions.
Landing Sequence
- Boostback Burn: Post-staging retrofire to reverse downrange momentum
- Controlled Reentry: Grid fin stabilization + passive drag shaping
- Landing Burn: Final descent with throttle ramp-down for soft vertical touch
- Landing Pad Lock: Autonomous leg deployment and pad capture confirmation
Strategic Advantages
- 🔁 Rapid booster turnaround (under 48 hours)
- 🌍 Environmental benefit: No recovery ships, no ocean drop
- 💰 Lower operating cost per kg to orbit
- 📡 Ideal for orbital and suborbital missions from coastal pads
- 🧪 Enables frequent low-cost tech demonstration flights
Roadmap
- 2024: Subscale booster hover test (Completed)
- 2025: First RTLS from suborbital Vajra vehicle
- 2026: Orbital-class RTLS from Trishul-1 core stage
- 2027: Multi-pad turnaround testing with PADMA boosters
Landing the Future
With RTLS, we 're closing the loop on expendable launch. Every return is a beginning — one that brings aerospace logistics closer to terrestrial efficiency. Gatkul 's precision RTLS systems unlock high-cadence launches with minimal overhead, enabling space infrastructure at scale.