Subject:
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Re: Homebrew sensors?
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 14 Nov 1998 00:33:08 GMT
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Original-From:
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Daniel Miller <danielmi@expert*spamless*.cc.purdue.edu>
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Viewed:
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2415 times
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On Fri, 13 Nov 1998, Ralph Hempel wrote:
> Daniel, I could not help but notice that you are into rockets. If so,
> then whoosh-bang is not the way to go. I think bang-whoosh makes a much
> better rocket since it should have a loud ignition, then a graceful arc
> into the wide blue yonder. The whoosh-bang rockets tend to be single
> use and break into multiple pieces...
Unfortunately the bang comes with the whoosh, often leading to a rapid
unplanned dissasembly. Witness the recent destruction of Delta III #1,
caused by a 4hz roll oscillation, or the Titan IV that ended in a BFRC due
to a clog in its wacky thrust vectoring system, or the Zenit that went
down with 12 com sats.
It's been a bad few months for rockets. At least the Ariane 5 is finally
working...
That's why, on jet engines, the bearings are big on the compressor and
light on the turbine. If the shaft breaks, the turbine goes ka-CHUNK out
the back of the engine instead of running away and shedding blades into
the cabin...
Daniel "Dan'l" Miller Senior, School of Aeronautics and
danielmi@expert.cc.purdue.edu Astronautics, Purdue, Indiana
danielmi@cartoon.ecn.purdue.edu
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Message has 1 Reply:
 | | Re: Homebrew sensors?
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| In article <Pine.GSO.3.96.98111...129.6050E- 100000@expert.cc.purdue.edu>, Daniel Miller <danielmi@expert.cc.purdue.e du> writes (...) Ah. A jet engine expert. It always puzzled me how the hot air knows it is supposed to go out of the hole at the (...) (26 years ago, 14-Nov-98, to lugnet.robotics)
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Message is in Reply To:
| | Re: Homebrew sensors?
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| Daniel Miller wrote in message ... (...) Daniel, I could not help but notice that you are into rockets. If so, then whoosh-bang is not the way to go. I think bang-whoosh makes a much better rocket since it should have a loud ignition, then a (...) (26 years ago, 13-Nov-98, to lugnet.robotics)
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