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Title

2-from-3 majority logic.

Dnepr back in service: http://www.novostimira.com.ua/news_63628.html , price did not changes from 31$mln listed on 18 Apr 2012 http://en.wikipedia.org/wiki/Dnepr-1 (price mentioned only on Russian version of a page: http://ru.wikipedia.org/wiki/%D0%94%D0%BD%D0%B5%D0%BF%D1%80_(%D1%80%D0%B0%D0%BA%D0%B5%D1%82%D0%B0-%D0%BD%D0%BE%D1%81%D0%B8%D1%82%D0%B5%D0%BB%D1%8C) ) . “Rokot” rocket launches is still suspended after 15 January 2013.

 Return to service because – “...partners agreed with changes on percentage of financial contribution, old percentage was not profitable” - In other words - offset's contractors show each other how much money they want to make.

 Rocket is conversion model of “Satan SS-18”, 3.7t on a orbit. F=geptil, O= amil (N2O4) == very toxic.

Vibration profile for Cubesats testing mentioned “Dnepr” rocket's profile.

Interesting from my prospective - on that rocket first time was a failure of triple control system. All 3 system was perfectly working during flight, but delays in different arrival time of the data confused 2-from-3 majority voting logic. Solution – expensive tripling, or total clock's synchronization (which has conflict with tripling of a system).

 In article mentioned prices - “Zenit” 80$-90$, and price of “Proton” after series of failure dropped to same as “Zenit” level (previously was 5$+10$ more than “Zenit”).

See also: http://t2000.livejournal.com/60984.html

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