Gaganyaan Mission: Countdown for test mission to begin today  

National desk: The 12.5hour countdown for the first unmanned Flight Test Vehicle Abort Mission-1 (TV-D1) to demonstrate the crew escape system of the Gaganyaan programme, will begin at 7.30 pm on at SHAR Range Sriharikota on Friday evening.

The Indian Space Research Organisation (ISRO) sources said the launch of the short duration mission will take place from the First Launch Pad at 0800 hrs on Saturday morning and the entire mission will last 531 secs (about nine minutes).

This flight test will mark a major milestone in the overall Gaganyaan programme–which will be India’s first manned mission to space—and will define the in-flight abort demonstration of Crew Escape System (CES) at Mach Number 1.2 with the newly developed Test Vehicle followed by Crew Module Separation and Recovery.

The objective of the mission is Flight demonstration and evaluation of Test Vehicle sub systems, Crew Escape System including various separation systems and Crew Module characteristics & deceleration systems demonstration at higher altitude and its recovery.

The 35 m tall Liquid Propelled Single Stage Test Vehicle, weighing about 44 ton, uses a modified Vikas engine with 4,520 kg Crew Module (CM)– a single walled unpressurised aluminium structure– and CES
mounted at its fore end.

“The entire flight sequence, right from lift off from the First Launch Pad to the crew module touchdown at sea about 10 km frm Sriharikota, with the deployment of parachutes, will last 531 seconds”, ISRO said.

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