Important : Mars Orbiter Mission : Challenging Phases are coming according to ISRO
Vishnu V
Hi all,
According to ISRO the most challenging phases of Mars Orbiter Mission (MOM) are approaching in coming days.
Now our Spacecraft (Mars Orbiter) is
staying in earth parking orbit with perigee 250km and apogee
23500km....ie it is still staying in earth's orbital field by the effect
of earth's gravitational pull...In order to reach Mars, the spacecraft
has to move away from earth's gravitational field and travel to the Mars
orbit....In several stages its apogee (the farthest distance of the
spacecraft from earth) will be increased in coming days on Nov 7, 9, 11
and 16 by increasing the velocity of the space craft and it will reach
the maximum apogee elliptical orbit with maximum
velocity...Then also the spacecraft will be in earth's gravitational
pull....After this comes the most challenging part of the mission, The
Trans-Mars Injection...ie escaping from the gravitational pull of earth
by injecting the liquid propulsion unit in MOM...This will be done on
December 1st, 12am to 2am range...During this time the velocity of the
vehicle will be greater than Escape Velocity and it will move away from
the gravitational effect of earth...Then the vehicle will travel in
hyperbolic path and enters into sun's gravitational field...After the
long hyperbolic trajectory MoM will reach Mars orbit on 24th Sept
2014....When MoM is about to reach Mars orbit ISRO scientists will
reduce the velocity of the Spacecraft to keep the vehicle in Mars orbit
50km near or away from orbit..otherwise the vehicle will lose its
control and travel away from Mars orbit...
Ya its Really challenging mission...
Only first phase is completed.... According to ISRO scientists Trans-Mars Injection is really challenging phase....Its has be done highest mathematical accuracy...In order to attain Trans-Mars Injection escape velocity they will gradually increase the velocity of the vehicle in coming days and as a result it will enter into more higher earth parking orbits.....
Also. as it moves towards Mars, given the distance between Mars and Earth, they will encounter communication delay 20 minutes one way. It means when signals are sent from ground stations, it will take 20 minutes to reach the spacecraft. For about 40 minutes (including time for return communication), there will be a occasion when you do not know what's happening...
Within next two hours ISRO will increase the velocity of the vehicle to move it to a more higher earth parking orbit....this is scheduled to conduct on 17th November 01:17am....
Now ISTRAC (ISRO Telemetry Tracking and Command Network), Bangalore is controlling the Spacecraft....Also two ships with satellite tracking system are out side of our country are in action. One of them is near Africa and another is perhaps near Australia. From those two ships ISRO is doing its job when MOM is out of Indian Radars.
So lets pray for the SUCCESS :D
Thanks and Regards,
Vishnu V
Anoop S
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