I was just musing about your thinking problem...... Shouldn't you use miles flown instead of missions flown? Or perhaps pound/miles flown or miles flown/number of viewers.
Randall Clague wrote: > I got to thinking... Hi, I'm Randall, and I have a thinking problem. > > In his autobiography, Deke Slayton responded to people who looked at > Challenger and said Shuttle was too unsafe to fly, and we should go > back to flying Apollos. Deke didn't like the idea: "If we had flown > 25 Apollo missions, we would have lost a flight crew." > > This led me to a per flight comparison. Program for program, Shuttle > is the deadliest vehicle by far, having killed 14 people. Year for > year, it's a little safer than Apollo, having killed two crews in 22 > years, to Apollo's one - nearly two - in 8 years. But flight for > flight, Shuttle is much safer than Apollo, or even Mercury, Gemini, > and Apollo combined. > > Mercury: 6 flights in 2 years; no casualties > Gemini: 10 flights in 2 years; one emergency, no casualties > Apollo: 16 flights in 8 years: lost one crew, nearly lost another > ELV total: 32 flights in 14 years; lost one crew, had two emergencies > > Shuttle 1-25: 25 flights in 5 years; lost one crew > Shuttle 26-113: 88 flights in 14 years; lost one crew > Shuttle total: 113 flights in 22 years; lost two crews > > So a factoid seen above is that even in its first 25 flights, Shuttle > had a better safety record than Apollo. Both vehicles killed their > crews, but Shuttle had more flights. > > A factoid I haven't seen before is that Shuttle has a better safety > record than Soyuz. Both vehicles have killed two flight crews, but > Shuttle has flown 113 times to Soyuz's 87 manned flights. Of course, > that's mostly historical: Soyuz hasn't killed a crew since 1971 - over > 30 years - and Soyuz engineers can also point to Progress, Mir, and > the Salyuts to demonstrate their safety record (though they would have > to own up to the Apollo 13 level emergency caused by the Progress vs. > Mir collision, since a godawful user interface was a major > contributing factor there; also the fire aboard Mir). > > So we've had more casualties in flight primarily because we've had > more flights. We always said we would accept that as the price for > opening the frontier. Let's name some streets after them and push on. > > -R > > -- > Every complex, difficult problem has a simple, > easy solution - which is wrong. > [EMAIL PROTECTED] > _______________________________________________ > ERPS-list mailing list > [EMAIL PROTECTED] > http://lists.erps.org/mailman/listinfo/erps-list -- >>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<< ........ Alex Fraser N3DER ......... ......... [EMAIL PROTECTED] ....... [~]_>^</\-[~]_>^</\-[~]_>^</\-[~]_>^< _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
