Home » News & Blogs » India’s Mangalyaan Mars Orbiter Mission has orbit raising problem but extra burn recovers it (Updated)
Bookmark and Share
Hyperbola

India’s Mangalyaan Mars Orbiter Mission has orbit raising problem but extra burn recovers it (Updated)

11 Nov 2013, 10:30 UTC
India’s Mangalyaan Mars Orbiter Mission has orbit raising problem but extra burn recovers it (Updated)
(200 words excerpt, click title or image to see full post)

A series of orbit raising manoevres for India’s controversial new space probe Mangalyaan in which the spacecraft would be raised to higher and higher Earth orbits before finally being injected into a high-efficiency Hohman transfer orbit, has been temporarily halted by a fault. According to the Indian Space Research Organisation (ISRO), the fourth orbital raising attempt on 11 November failed after a premature shut down of the main engine and the spacecraft’s back up logic triggered thruster firings instead. The result was that the spacecraft’s velocity increased 35m/s rather than the 130m/s expected and undershot its planned for apogee (orbital high point) of 100,000km by nearly 22,000km. The spacecraft is currently in a 71,623 x 78,276 km orbit around the Earth. An attempt to redo this engine firing was successfully made late on 11 November with a five minute burn that raised the apogee to 117,000km.
The launch of the Indian Space Research Organisation’s (ISRO) Mangalyaan Mars Orbiter Mission probe by a PSLV-XL on 5 November (see India’s Mars mission clears launch hurdle) brought both international admiration over how fast and how cheaply India managed to do it (at only $70 million, it was about one quarter the cost of ...

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod