Advertisement

HindustanTimes Sat,12 Jul 2014

Isro gears up for final Mangalyaan orbit-raising move

Vanita Srivastava , Hindustan Times  New Delhi, November 16, 2013
First Published: 00:22 IST(16/11/2013) | Last Updated: 00:55 IST(16/11/2013)

The Indian Space Research Organisation (Isro) has geared itself for the fifth orbit raising operation of the Mangalyaan  at 2:27 am on Saturday, the final one in a series of earth-bound manoeuvres before being finally ejected out of the earth’s sphere of influence on December 1.

Advertisement

The apogee(farthest point from earth) after the fifth firing will be increased from 1,18,600 km to 1,92,874 km. The velocity will be increased to 101m/sec.

This will be the final earth bound manoeuvre before the crucial Trans-Mars injection on December 1 for the spacecraft to move out of the sphere of influence of earth towards Mars.

There was a glitch in the fourth orbit raising operation following which a supplementary operation had to be done to raise the apogee.

During the orbit-raising operations conducted since November 7, Isro has been testing and exercising the autonomy functions progressively that are essential for Trans-Mars Injection (TMI) and Mars Orbit Insertion. The spacecraft has to take several rounds around earth to gradually increase its velocity to attain escape velocity with minimum fuel consumption.


Advertisement
more from India

Agusta supplied choppers that did not undergo flight evaluation trials

The firm’s two representative choppers, with their mock-up passenger cabins, had attended the exercise and not the actual contracted chopper in violation of the norms, found Central Bureau of Investigation’s probe.
Advertisement
Most Popular
Advertisement
Advertisement
Copyright © 2014 HT Media Limited. All Rights Reserved