Overview
On 3 July 2026, the ISRO successfully conducted a static‑fire test of the SOLVE solid motor at the Static Test Facility, Sriharikota. The test is a crucial step toward the crewed Gaganyaan mission.
Key Developments
- SOLVE uses a solid motor derived from the PSLV strap‑on motor, modified with a slow‑burn propellant and a straight nozzle with secondary injection thrust‑vector control.
- The vehicle will lift a dummy crew module to an altitude of 10‑17 km before separating it for parachute deployment.
- Ten parachutes (two apex covers, two drogues, three pilots, three mains) will be sequentially released to achieve a low‑velocity splash‑down.
- Successful test validates the parachute‑based deceleration system for Gaganyaan.
Important Facts
The Gaganyaan mission comprises three phases: ascent, orbital, and descent. The ascent phase uses a human‑rated launch vehicle to place the orbital module (crew + service module) in low Earth orbit. The descent phase relies on a series of parachutes to reduce touchdown speed, ensuring crew safety. Earlier, ISRO carried out two IADT trials, dropping a dummy module from a helicopter at ~3 km. SOLVE extends this by testing from higher altitudes (10‑17 km), closer to actual mission conditions.
Exam Relevance
Understanding SOLVE and Gaganyaan helps candidates in GS‑3 (Science & Technology) and GS‑2 (Polity) where space policy, indigenous technology development, and international cooperation are examined. The test illustrates India’s capability to develop end‑to‑end human‑spaceflight infrastructure, a topic often asked in essay and answer‑type questions on national security, scientific self‑reliance, and technology policy.
Way Forward
ISRO will use SOLVE for multiple test missions to certify the crew escape system, propulsion, and other critical subsystems. Successful validation will pave the way for the first crewed launch, expected in the near future, and strengthen India’s position in the global human‑spaceflight arena.