November 5, 2013: Launch of the Mars Orbiter Mission (Mangalyaan)

On November 5, 2013, ISRO launched the Mars Orbiter Mission (MOM), popularly termed Mangalyaan, aboard the PSLV-C25 rocket from Sriharikota. The mission catapulted India into elite interplanetary exploration, making ISRO the fourth space agency in the world to reach Martian orbit and the first to achieve it successfully on its maiden attempt.

1. Orbital Mechanics & Technological Ingenuity

• Constrained Thrust Optimization: Lacking a heavy-lift rocket at the time, ISRO used the reliable workhorse PSLV-XL to place the 1,350 kg probe into an elliptical Earth orbit, gradually raising its apogee via successive perigee burns.
• Trans-Mars Injection (TMI): Executed on December 1, 2013, the spacecraft broke free from Earth’s gravity well, entering a hyperbolic Hohmann Transfer Orbit covering nearly 666 million kilometres over a 300-day interplanetary cruise.
• Mars Orbit Insertion (MOI): On September 24, 2014, the Liquid Apogee Motor (LAM) was re-ignited flawlessly after an idle period of almost 10 months, successfully braking the probe into an elliptical Martian orbit.

2. Comparative Matrix: Indigenous Payloads Aboard Mangalyaan

3. Global Standing & Strategic Significance

• Frugal Engineering: Executed at an estimated budget of approximately 450 crore rupees (around 73 million dollars), MOM demonstrated cost-effective, high-reliability engineering, completed at a fraction of contemporaneous missions like NASA’s MAVEN.
• Extended Operational Life: While designed with an initial mission design lifetime of just 6 months, Mangalyaan operated continuously for nearly 8 years before losing communications in April 2022 due to battery exhaustion following back-to-back eclipses.
• Pathway to Mangalyaan-2: Paved the programmatic foundation for future planetary explorations, including Mars Orbiter Mission-2 (MOM-2), the Shukrayaan Venus orbiter, and deep-space autonomous navigation protocols.