Subject:
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Re: Wings [was: Re: Building big]
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Newsgroups:
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lugnet.space, lugnet.loc.au
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Date:
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Fri, 22 Jun 2001 01:53:17 GMT
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Viewed:
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7061 times
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In lugnet.space, Jesse Alan Long writes:
> notably our space program, all over the world. These same companies are
> working with contractors to develop newer types of engines such as an ion
> propulsion system for the future replacements of the space shuttle, of which
> some people may say that they may be in production and used in outer space
> as early as the year 2003.
Ion drives will not be in use in 2003. The only form of space engines
that are currently in production are rockets. There are liquid-fuelled
rockets, which can be turned on and off ("throttled"), and there
are solid-fuel rockets which cannot be turned off once started. Examples
of liquid-fuelled rockets are the main engines on the Space Shuttle,
and the manoeuvring thrusters on the Space Shuttle (actually, somebody
please check me on that, are they really rocket thrusters, or just
pressurized gas?). Examples of solid-fuel rockets are the two boosters
on the side of the Space Shuttle.
There are a variety of engine concepts being researched for the future,
but none are in use. These include SCRAMjets (no good in space, only
in the atmosphere), nuclear power, etc. Most of these concepts only
change what the engine uses for energy or "fuel", and not how they
generate the thrust to move a ship---they still rely upon a rocket
nozzle for the thrust. Most of these engine ideas, including "ion
drives" are still the stuff of science fiction, and it will be a very
long time before we see them in use..., *if* they ever see use.
KDJ
_______________________________________
LUGNETer #203, Windsor, Ontario, Canada
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Message has 2 Replies:
 | | Re: Wings [was: Re: Building big]
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| Wrong! Ion rockets are in use now, and have been for 30 years. They're just not big enough to for sub-orbital work. See (URL) Drew ----- Original Message ----- From: "Kyle D. Jackson" <flightdeck@sympatic...mblock.ca> To: <lugnet.space@lugnet.com>; (...) (23 years ago, 22-Jun-01, to lugnet.space, lugnet.loc.au)
| | | Re: Wings [was: Re: Building big]
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| (...) Are you sure about this? I believe there are ion drives in use on some research sats already. They are extremely low thrust mercury based but have, again, been shown to work for stationkeeping, unless my memory is completely fried. I want to (...) (23 years ago, 22-Jun-01, to lugnet.space)
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Message is in Reply To:
| | Re: Wings [was: Re: Building big]
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| (...) There has existed artificial gravity for years in the space programs, most notably our space program, all over the world. These same companies are working with contractors to develop newer types of engines such as an ion propulsion system for (...) (23 years ago, 21-Jun-01, to lugnet.space, lugnet.loc.au)
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