Path: utzoo!yunexus!geac!syntron!jtsv16!uunet!seismo!sundc!pitstop!sun!decwrl!labrea!rutgers!bellcore!faline!thumper!ka9q.bellcore.com!karn From: karn@ka9q.bellcore.com (Phil Karn) Newsgroups: sci.space.shuttle Subject: Re: gratuitous anthrophobia (was Re: Shuttle computer reprogramming) Message-ID: <1366@thumper.bellcore.com> Date: 26 Oct 88 00:03:56 GMT Article-I.D.: thumper.1366 References: <6689@nsc.nsc.com> <6980@ihlpl.ATT.COM> <1938@kalliope.rice.edu> <1988Oct20.175844.24740@utzoo.uucp> <1356@thumper.bellcore.com Sender: news@thumper.bellcore.com Reply-To: karn@ka9q.bellcore.com.UUCP (Phil Karn) Organization: Home for Burned-out Hackers Lines: 13 Ah, now I understand the context of your comment. Actually, we're still flying DRAMs in other spacecraft operating in more benign environments. Both UoSAT-Oscar-9 and UoSAT-Oscar-11 have 4116 DRAM in their primary onboard computers. These are the same types flown in Oscar-10. Unlike Oscar-10, however, the UoSATs are in low earth orbits where the radiation flux is much less. They are both working fine. As for risky technology sometimes failing, that's precisely my point! When you take the low-cost, unmanned approach to spacecraft design, you can afford to lose on a few risks. If you can't accept the consequences of a failure, you'd never try anything new. Phil