Stan,I based my reasoning on this report that appeared 6 days ago - http://goo.gl/Fj85q- Pradeep
Of the seven engines procured from Russia , only two are left, said Ramakrishnan.
From the Mission Profile posted above, there is only GSLV D4 flying in the FY 2011-12. This, ISRO, Chairman said will fly with a Russian cryo to check out the vehicle design. So, the GSAT-14 would likely fly on a GSLV Mk-I. - Pradeep
This article was mentioned as being questionable on another thread. It raises a few questions; like how many upper stages remain; and why are they modifying an engine pump?QuoteOf the seven engines procured from Russia , only two are left, said Ramakrishnan. - six have been used?http://forum.nasaspaceflight.com/index.php?topic=23302.msg727543#msg727543http://www.novosti-kosmonavtiki.ru/content/numbers/188-189/24.shtmlhttp://www.novosti-kosmonavtiki.ru/content/numbers/238/22.shtml
A high pressure booster pump in an indigenous cryogenic engine that had not performed upto expectations in an earlier GSLV mission has been redesigned and successfully tested. “We are even planning to integrate into the remaining Russian cryo engine to boost its performance,” he said.
(http://www.rian.ru/science/20110420/366470673.html dated April 20) "According to the head of ISRO Radhakrishnan, after careful check of 12КRB it is necessary to make a test launch which is planned for 2011-2012 (will end on March, 31st, 2012). After that, India will not have any Russian cryogenic engine (altogether seven units have been bought ), and the following GSLV will go to space in 2012 with an Indian engine which is now under completion."
Adding to Pradeep's discussion:There may be two sort of experimental launches now1. GSLV D4....testing the modified Indian cryogenic engine.2. GSLV F5(?)...testing the changes made to the GSLV design with the sole Russian engine left
Perhaps we should move this discussion out of the Indian Launch Schedule discussion?Pradeep
PSLV are workhorses with respectable payloads of about 1600 kg. In 2011, PSLVs will launch GSAT-12, the Megha-Tropiques satellite, GSAT-6 and Radar Imaging Satellite (RISAT-1), all from Sriharikota. Another GSAT would also be launched from Kourou, French Guiana, by an Ariane rocket from Arianespace in June 2011.Source.