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<H2><A ID="SECTION00073000000000000000">
Hyperdrives and Jump Ranges</A>
</H2>
<P>
A hyperdrive lets you travel its maximum range in seven
days, which is 168 hours. Travel time is linear with distance, so you will
use one day to travel a seventh of your hyperdrive range. For a class <I>n</I>
drive you will need <I>n</I><SUP>2</SUP> tons of fuel to travel the maximum range, except
for the class 8 hyperdrive which actually is a class 9 drive and therefore
uses 81 tons for a maximum range jump. The fuel consumption is linear with
the distance, using only integer amounts of fuel, so you will need e.~g.
<tex2html_verbatim_mark>#math161#⌈<tex2html_image_mark>#tex2html_wrap_inline2078#⌉ tons of fuel to travel half the maximum drive
range. The only difference between the civil and military versions of a drive
is the weight of the drive and the type of fuel used.
<P>
The relation between jump cost <I>c</I> [<I>t</I>], jump time <I>t</I> [<I>h</I>], ship mass
<I>m</I> [<I>t</I>] and jump distance <I>d</I> [<I>lj</I>] can be expressed a little more exact to
give you a few numbers to crunch. Here the equations:
<P></P><DIV ALIGN="CENTER">
<tex2html_verbatim_mark>#math162#
<TABLE WIDTH="100%" ALIGN="CENTER">
<TR VALIGN="MIDDLE"><TD></TD><TD ALIGN="CENTER" NOWRAP>
<TABLE>
<TR VALIGN="MIDDLE"><TD ALIGN="CENTER"><I>c</I> = <tex2html_image_mark>#tex2html_wrap_indisplay2085#<tex2html_image_mark>#tex2html_wrap_indisplay2086#<tex2html_image_mark>#tex2html_wrap_indisplay2087#</TD>
</TR>
</TABLE>, *1<I>cm</I><tex2html_image_mark>#tex2html_wrap_indisplay2088#
</TD>
<TD WIDTH=10 ALIGN="RIGHT">
(5)</TD></TR>
</TABLE>
</DIV>
If you set the time to the maximum 168 <I>h</I> in the second
equation you can calculate the maximum range of the drive of a given class in
a given ship. If you do this for the class 8 drive in a Panther or Boa you
get inconsistencies. From table <A HREF=<tex2html_cr_mark>#tab:ships#264><tex2html_cr_mark></A> you can see that the class 8
drive behaves like a class 9 drive in the Panther and like a class 7.79 drive
in the Boa. I hope this indicates a mistake in the table. The maximum ranges
for the Lynx Bulk Carrier and the Long Range Cruiser are calculated as if the
class 8 drive were actually class 9 drive. I don't know whether these ships
can carry hyperdrives at all.
<P>