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India’s Mars-bound Orbiter mission crosses half-way mark

illusion8

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Chennai: Cruising towards a historic feat, the Indian space mission to Mars crossed half the total distance to the red planet from Earth and was very much along the designated helio-centric trajectory. At exactly 09.50 am (IST), the Mars Orbiter Mission spacecraft crossed the mid-point of its path to Mars, thereby has travelled 337.5 million km in its elliptical orbit around the sun, ISRO sources said. It took four minutes and 15 seconds for a message to reach the spacecraft and return, they said. Incidentally, the spacecraft is crossing half the total distance on its way to Mars, a day after Earth was at its closest to the red planet, in their respective orbits.

The mission was very much in track and it was evident with the fact that the second Trajectory Correction Manouvre (TCM) planned on the spacecraft has now been considered not necessary and is expected to be performed only in June, scientists said. ISRO has been continuously monitoring the spacecraft using its Deep Space Network complemented by that of Jet Propulsion Laboratory of the NASA and the five scientific instruments onboard the craft were "in good health." Periodic tests were also being done on the different levels of autonomy built into the spacecraft for managing contingencies. "Soon, the High Gain Antenna of the spacecraft will be put in service for handling communications with the ground stations," an ISRO statement said. Of the four TCMs planned on the spacecraft, the first was performed on December 10 last year and the remaining are scheduled in June, August and September, respectively. India’s maiden mission to Mars was successfully launched on board PSLV C 25 from Satish Dhawan Space Centre at Sriharikota spaceport, some 100 km from here, on 5 November last year. The Rs 450-crore mission intends to explore the presence of Methane in the Red Planet with the help of five scientific instruments on board the spacecraft. Of the total 51 missions undertaken to Mars (excluding MOM), only 21 have been successful. If all goes well and the satellite orbits around Mars, India’s national space agency ISRO would be the fourth after agencies in US, Russia and Europe to have undertaken a successful mission to the red planet. Attempts by China and Japan to send missions to Mars have failed.

Read more at: India's Mars-bound Orbiter mission crosses half-way mark | Firstpost
 
...the second Trajectory Correction Manouvre (TCM) planned on the spacecraft has now been considered not necessary and is expected to be performed only in June...and the five scientific instruments onboard the craft were "in good health."
Most impressive. Speaks well of Indian technical and managerial skills. Should put less-competent Indian organizations to shame.

"Soon, the High Gain Antenna of the spacecraft will be put in service for handling communications with the ground stations,"
That's the next important milestone.

Of the total 51 missions undertaken to Mars (excluding MOM), only 21 have been successful. If all goes well and the satellite orbits around Mars, India’s national space agency ISRO would be the fourth after agencies in US, Russia and Europe to have undertaken a successful mission to the red planet.
To be fair, everybody learned from everybody's failures. For example, the Russians shared the experience of their landing failures with the U.S. and their ideas were incorporated into U.S. Mars lander descent systems. A number of the Indians have worked at NASA facilities and likely learned there to avoid some of the more oddball mistakes, like losing a Mars probe because someone forgot to convert distance units correctly when communicating between tracking stations run by different organizations.
 
has travelled 337.5 million km.!!!!!!!!!..wow...what is its speed and source of energy?
 
has travelled 337.5 million km.!!!!!!!!!..wow...what is its speed and source of energy?
Multi-staged rockets to direct the probe and boost it to Earth escape velocity. From there it has "coasted", its path determined by orbital mechanics with just one course correction.

I guess it is choosing the long route. Minimum distance is 52 million, farthest is 401 million KM. source: What Is the Distance Between Earth and Mars? | Space.com
It's not traveling in a straight line but along the arc of an ellipse; that's how minimum-energy transfer orbits work.
 
like losing a Mars probe because someone forgot to convert distance units correctly when communicating between tracking stations run by different organizations.
^^^ It is for real ??? Or just an example.
 
This is the most impressive space achievement so far for India:-)
 
has travelled 337.5 million km.!!!!!!!!!..wow...what is its speed and source of energy?
Velocity doesnt change as there is no force is being applied on the rover.It travels with a constant velocity towards its aaim.
 
Velocity doesnt change as there is no force is being applied on the rover.It travels with a constant velocity towards its aaim.
Gravity from the sun and planets is applied to spacecraft throughout its flight. Once it leaves Earth's vicinity the Sun's influence dominates, slowing the spacecraft until the probe reaches Mars.
 
Gravity from the sun and planets is applied to spacecraft throughout its flight. Once it leaves Earth's vicinity the Sun's influence dominates, slowing the spacecraft until the probe reaches Mars.
Indeed but the effect is not much and can be corrected.So if you see from an ideal point of view that force can be neglected.
 

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