Axiom-4 Mission Docks at ISS: Shukla and Crew Begin 14-Day Research Program After Successful Launch

The Axiom-4 (Ax-4) mission, carrying a crew including India's Shubhanshu Shukla, launched from NASA's Kennedy Space Center on Wednesday at 12:01 pm IST, setting course for the International Space Station (ISS). The crew, consisting of Shukla, Anne McClain, Nichole Ayers, and Peggy Whitson, are undertaking a roughly 29-hour journey to the orbital outpost. Docking is scheduled for 4:30 pm IST on Thursday at the space-facing port of the Harmony module, where they will spend approximately two weeks conducting scientific research.

Preparing for the Launch

The mission began at Launch Complex 39A, the same site from which Neil Armstrong embarked on his historic Moon mission. The Ax-4 crew, suited up in specialized flight gear, arrived at the pad and entered the Dragon capsule "C213". They then completed pre-launch checks with SpaceX and NASA teams.

Approximately 35 minutes before launch, the Launch Director authorized fueling after the crew's emergency escape mechanism was activated. The Falcon-9 rocket received its supercooled liquid oxygen and RP-1 kerosene fuel. With five minutes remaining, Dragon transitioned to internal power. The countdown required perfect synchronization of all systems.

Ascent Phase

At T-0, the nine Merlin engines of Falcon-9 ignited, propelling the vessel skyward. Within sixty seconds, the craft exceeded the speed of sound. The "Max Q" phase, during which the vehicle experienced peak aerodynamic stress, occurred at 57 seconds. The vessel continued its trajectory towards low-Earth orbit (LEO), with the crew experiencing intensifying gravitational forces.

Stage Separation and Orbital Entry

Roughly 150 seconds after launch, the first stage detached and returned to Earth, targeting an automated landing on an Atlantic Ocean platform. The second stage continued to propel Dragon towards orbit.

Ten minutes post-launch, Dragon separated and began its independent flight. The nose cone opened, revealing essential navigation equipment. The craft reached speeds exceeding 27,000 km/hr, completing an Earth orbit every 90 minutes.

ISS Approach

The subsequent 20-24 hours involved precise orbital adjustments. Dragon executed calculated engine burns to align with the ISS trajectory, utilizing GPS, radar, and internal sensors for positioning.

Docking Procedure

Dragon approached the ISS systematically, pausing at designated waypoints from 400 meters inward. Ground control authorized each progression. At 20 meters, the craft's laser sensors and cameras guided it towards the Harmony module's docking port.

The connection occurred in two phases: magnetic soft capture, followed by mechanical hard capture, establishing an airtight seal.

Mission Commencement

After thorough pressure and leak verification, the crew entered the ISS. The Ax-4 team commenced their two-week scientific program, which includes diabetes research. For Shukla, this mission signifies a personal achievement and highlights India's increasing presence in space exploration.