ted@.......... wrote: > This must have been tough gear. If my math is right, 400 mph is about 600 > ft/sec. To decelerate from 600 ft/sec to 0 (assuming uniform deceleration) > means that the avg speed during deceleration is 300 ft/sec. At 300 ft/sec > it takes about 14 msec to go 4 feet. Therefore the deceleration must have > been 300 / 0.014 = 21,400 ft/sec/sec or about 670 G's. The science team > was prepared to lose either probe if it hit a rocky surface (which would > result in about 10,000 G deceleration I'd guess). But they tested the > units to thousands of G's on earth by firing them into the earth from > airborne cannons. (Why didn't I go to work for NASA?) > > > Regards, Ted > I had a friend that used to design proximity fuses for cannon shells. He had some interesting stories about what 10000 g would due to common electronic parts. The TO18 transistor can gets flattened into a little disk. -- Jim Hannon http://soli.inav.net/~jmhannon/ 42,11.90N,91,39.26W WB0TXL _____________________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>